Researcher Database

Noro Shin-ichiro
Faculty of Environmental Earth Science Integrated Environmental Science Environmental Adaptation Science

Researcher Profile and Settings


  • Faculty of Environmental Earth Science Integrated Environmental Science Environmental Adaptation Science

Job Title

  • Professor


J-Global ID

Research Interests

  • 金属錯体薄膜   多孔性材料   金属錯体   分離材料   多孔性金属錯体   二酸化炭素   thin film of metal complex   field-effect transistor   Porous Material   Metal Complex   separating material   porous metal complex   CO2   

Research Areas

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Electronic devices and equipment
  • Nanotechnology/Materials / Inorganic and coordination chemistry
  • Environmental science/Agricultural science / Environmental materials/recycling technology
  • Environmental science/Agricultural science / Environmental load reduction/restoration technology

Academic & Professional Experience

  • 2017/11 - Today Hokkaido University Faculty of Environmental Earth Science Professor
  • 2012/04 - 2017/11 Hokkaido University Research Institute for Electronic Science
  • 2010/06 - 2012/03 Hokkaido University Research Institute for Electronic Science
  • 2007/06 - 2012/03 RIKEN
  • 2007/04 - 2010/05 Hokkaido University Research Institute for Electronic Science
  • 2004/07 - 2007/03 Hokkaido University Research Institute for Electronic Science


  • 2000/04 - 2003/03  Kyoto University  Graduate School of Engineering  Department of Synthetic Chemistry and Biological Chemistry
  • 1998/04 - 2000/03  Tokyo Metropolitan University
  • 1994/04 - 1998/03  Tokyo Metropolitan University  Faculty of Science  Department of Chemistry
  • 1991/04 - 1994/03  神奈川県立平塚江南高等学校

Association Memberships

  • JAPAN SOCIETY FOR MOLECULAR SCIENCE   日本化学会   錯体化学会   The Chemical Society of JapanJapan Society of Coordination ChemistryThe Japan Society of Applied Physics   

Research Activities

Published Papers

  • Ryo Ohtani, Hiromu Matsunari, Takafumi Yamamoto, Koji Kimoto, Masaaki Isobe, Kotaro Fujii, Masatomo Yashima, Susumu Fujii, Akihide Kuwabara, Yuh Hijikata, Shin‐ichiro Noro, Masaaki Ohba, Hiroshi Kageyama, Shinya Hayami
    Angewandte Chemie International Edition 59 (43) 19254 - 19259 1433-7851 2020/10/19 [Refereed][Not invited]
  • Masaru Fujibayashi, Yu Watari, Ryo Tsunashima, Sadafumi Nishihara, Shin‐ichiro Noro, Chang‐Gen Lin, Yu‐Fei Song, Kiyonori Takahashi, Takayoshi Nakamura, Tomoyuki Akutagawa
    Angewandte Chemie International Edition 1433-7851 2020/09/30 [Refereed][Not invited]
  • Xin Zheng, Hiroyasu Sato, Kiyonori Takahashi, Shin-ichiro Noro, Takayoshi Nakamura
    Crystal Growth & Design 20 (6) 3596 - 3600 1528-7483 2020/06/03 [Refereed][Not invited]
  • Kazuya Kubo, Masashi Yoshitake, Norihisa Hoshino, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    European Journal of Inorganic Chemistry 2020 (17) 1670 - 1675 1434-1948 2020/05/10 [Refereed][Not invited]
  • Pia Vervoorts, Andreas Schneemann, Inke Hante, Jenny Pirillo, Yuh Hijikata, Takashi Toyao, Kenichi Kon, Ken-ichi Shimizu, Takayoshi Nakamura, Shin-ichiro Noro, Roland A. Fischer
    ACS Applied Materials & Interfaces 12 (8) 9448 - 9456 1944-8244 2020/02/26 [Refereed][Not invited]
  • Shin-ichiro Noro, Yu Song, Yutaro Tanimoto, Yuh Hijikata, Kazuya Kubo, Takayoshi Nakamura
    Dalton Transactions 49 (27) 9438 - 9443 1477-9226 2020 [Refereed][Not invited]

    The solid solutions composed of different ratios of two Werner complexes showed controlled acetone gate-sorption properties.

  • Understanding the interactions between the bis(trifluoromethylsulfonyl)imide anion and absorbed CO2 using X-ray diffraction analysis of a soft crystal surrogate
    Xin Zheng, Katsuo Fukuhara, Yuh Hijikata, Jenny Pirillo, Hiroyasu Sato, Kiyonori Takahashi, Shin-ichiro Noro, Takayoshi Nakamura
    Communications Chemistry 2020 [Refereed][Not invited]
  • Takahiro Tsuchiya, Reiya Umemura, Mutsumi Kaminaga, Shunsuke Kushida, Kei Ohkubo, Shin Ichiro Noro, Yasuhiro Mazaki
    ChemPlusChem 84 (6) 655 - 664 2019/06 [Refereed][Not invited]
    © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Rhodium dinuclear complexes (1-3) with azulene moieties as equatorial ligands were obtained by reacting Rh2(OAc)4 with guaiazulene-2-carboxylic acid, azulene-2-carboxylic acid, and azulene-1-carboxylic acid, respectively. The molecular structures in their crystalline states were determined by X-ray diffraction to be 1 ⋅ (H2O)2, 1 ⋅ (MeCN)2, 2 ⋅ (MeCN)2, and 3 ⋅ (DMF)2, which were coordinated with the crystallization solvent at the axial positions. Among these, the crystal packing of 1 ⋅ (H2O)2, 1 ⋅ (MeCN)2, and 3 ⋅ (DMF)2 revealed the formation of one-dimensional stacked chains nearly along the axial direction and of two-dimensional stacked sheets along the equatorial direction. In addition, it was found that 1 ⋅ (H2O)2 contained cavities that could adsorb CO2, thereby inducing structural changes. Furthermore, redox measurements revealed the stepwise one-electron redox behaviors of these complexes, indicating the intramolecular interactions between the azulene units. In addition, transient absorption measurements suggested the presence of an ultrafast intersystem crossing caused by the heavy-atom effect of rhodium, and an extended lifetime of the triplet state due to the energy migration among the azulene ligands.
  • Shota Uchikawa, Ayumi Kawasaki, Norihisa Hoshino, Takashi Takeda, Shin Ichiro Noro, Kiyonori Takahashi, Takayoshi Nakamura, Nozomi Sato, Ken Kokubo, Hidehiro Sakurai, Tomoyuki Akutagawa
    Journal of Physical Chemistry C 123 23545 - 23553 1932-7447 2019 [Refereed][Not invited]
    Copyright © 2019 American Chemical Society. Hydrophilic fullerene derivatives of C60(OH)12 (1) and C60(OH)36 (2) bearing different numbers of -OH groups formed amorphous solids of 1·x(H2O) (x = 5-10) and 2·x(H2O) (x = 15-22), respectively, according to the humidity. The thermally activated dynamic molecular motion of polar H2O was confirmed in the DSC and dielectric spectra. Three-dimensional O-H···O hydrogen-bonding networks in amorphous 1 and 2 produced extrinsic adsorption-desorption pores with a hydrophilic environment posed by -OH groups, where N2, CO2, H2, and CH4 gases vapors and polar H2O, MeOH, and EtOH molecules reversibly adsorbed into the networks. The molecular motion of polar H2O was directly observed in dielectric enhancement and protonic conductivity in three-dimensional O-H···O hydrogen-bonding networks. The Brunauer-Emmett-Teller (BET) specific surface areas of amorphous 1 and 2 were 315 and 351 m2 g-1, respectively, from the CO2 sorption isotherms. Reversible vapor sorption behaviors with structural changes of amorphous 1 and 2 were also confirmed for the polar H2O, MeOH, and EtOH.
  • Yuki Shirakawa, Kiyonori Takahashi, Hiroyasu Sato, Norihisa Hoshino, Hayato Anetai, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    Chem. Eur. J. 25 6920 - 6927 2019 [Refereed][Not invited]
  • Rika Ochi, Shin-ichiro Noro, Kazuya Kubo, Takayoshi Nakamura
    Dalton Trans. 48 6314 - 6318 2019 [Refereed][Not invited]
  • Hiroshi Nishiyama, Takashi Takeda, Norihisa Hoshino, Kiyonori Takahashi, Shin-Ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    Crystal Growth and Design 18 (1) 286 - 296 1528-7505 2018/01/03 [Refereed][Not invited]
    Diamino-4,4-bithiazole (1) formed host-guest binary molecular crystals with various types of organic guest molecules including pyridine (Py), benzonitrile (PhCN), piperidine (Pipe), DMF, THF, 1,4-dioxane (Diox), CH3OH, aniline (Ani), coumarin (Coum), nitrobenzene (PhNO2), hexamethylenetetramine (HMTA), and quinoline (Quino). Single crystal X-ray structural analyses at 100 K revealed the formation of 1·(guest) or 1·(guest)2 crystals. Reversible molecular adsorption-desorption responses were observed with Py, PhCN, Pipe, DMF, and Diox around room temperature as the crystalline powders were heated during the desorption process and exposed to guest vapor during the readsorption process. The adsorption-desorption isotherms of crystalline powders 1 with Diox at 298 K indicated a reversible gate-opening adsorption-desorption process. Although the host-guest molecular crystals 1·(THF)2 and 1·(CH3OH)2 were confirmed by X-ray crystal structural analyses at 100 K, the THF and CH3OH guests were already eliminated at room temperature. Guest desorption processes of crystalline powders 1·(guest)x were not observed in the host-guest molecular crystals with Ani, Coum, PhNO2, HMTA, and Quino after the crystalline powders were heated. A balance of both the dipole moment and vapor pressure of the guest molecules played an essential role to elicit reversible guest sorption. The crystal structures formed on account of double N-H⋯N hydrogen-bonded one-dimensional (1D) chains between the -NH2 group and the ring nitrogen atom of 1, which interacted to form two-dimensional (2D) sheet structures through π-stacking and/or S⋯S interactions. Alternating layers of N-H⋯N hydrogen-bonded herringbone packing of 1 and the guest molecules led to the formation of other types of crystal lattices. The hydrogen-bonding molecular assemblies of 1 demonstrated lattice flexibly via the configuration change in the molecular arrangements according to the boiling point of the guest molecules.
  • Takashi Takeda, Shin-ichiro Noro, Takayoshi Nakamura, Yasutaka Suzuki, Jun Kawamata, Tomoyuki Akutagawa
    CrystEngComm 20 17 - 24 2018 [Refereed][Not invited]
  • Masaru Kato, Marika Muto, Naohiro Matsubara, Yohei Uemura, Yuki Wakisaka, Tsubasa Yoneuchi, Daiju Matsumura, Tomoko Ishihara, Takashi Tokushima, Shin-ichiro Noro, Satoru Takakusagi, Kiyotaka Asakura, Ichizo Yagi
    ACS Appl. Energy Mater. 1 2358 - 2364 2018 [Refereed][Not invited]
  • Misaki Shiga, Shogo Kawaguchi, Masaru Fujibayashi, Sadafumi Nishihara, Katsuya Inoue, Tomoyuki Akutagawa, Shin-Ichiro Noro, Takayoshi Nakamura, Ryo Tsunashima
    Dalton Transactions 47 (23) 7656 - 7662 1477-9234 2018 [Refereed][Not invited]
    Newly prepared single crystals of [Co(ii)(dabco)(NCS)2(MeOH)2]·dabco (1-pink dabco: 1,4-diazabicyclo[2.2.2]octane) showed chromotropic behaviour in the solid state, changing from pink to blue upon heating or grinding. The complex 1-pink exhibited a two-dimensional orthogonal network structure with the coordination chain of -dabco-Co- bridged by hydrogen bonds between coordinative methanol and a second dabco molecule, where the methanol molecule was trapped by coordinative and hydrogen bonds. Chromism was demonstrated to stem from the quantitative desorption of methanol from 1-pink to produce [Co(ii)(dabco)(NCS)2]·dabco (1-blue(c)) by thermogravimetric (TG) and temperature controlled gas chromatography-mass spectrometry (GC-MS) analyses, and powder X-ray diffraction (XRD) analysis suggests that the transformation between the crystalline phases of 1-pink and 1-blue(c) occurred with similar lattice parameters. Furthermore, the desolvated species showed chemo-chromic behaviour due to the selective size- and polarity-dependent adsorption of solvent molecules.
  • Takashi Takeda, Shin-ichiro Noro, Takayoshi Nakamura, Yasutaka Suzuki, Jun Kawamata, Tomoyuki Akutagawa
    CrystEngComm 20 (1) 17 - 24 2017/11 [Refereed][Not invited]
  • Ryo Tsunashima, Ippei Nakamura, Rika Oue, Seiya Koga, Hirofumi Oki, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    DALTON TRANSACTIONS 46 (37) 12619 - 12624 1477-9226 2017/10 [Refereed][Not invited]
    The electrical conductivity of mixed-valence [(Mo2Mo16O54)-Mo-V-O-VI(SO3)(2)](6-) tetraalkylammonium salts was investigated through dependence on the inter-cluster distance that is controlled by tetraethylammonium, tetrapropylammonium, and tetrabutylammonium cations. The crystallographic analysis of single crystals revealed that the inter-cluster distances are dependent on the chain length of the alkyl groups on the counter cations. In addition, the electrical conductivities of the single crystals were found to be dependent on both temperature and chain length. Mixed-valence polyoxometalate (POM) clusters are considered to be a molecular particle of Mo bronze by which highly ordered networks will be developed using single crystals, where POMs are rather small and have a well-organized structure compared to colloidal nanostructures.
  • Fujun Cheng, Qianqian Li, Jingui Duan, Nobuhiko Hosono, Shin-ichiro Noro, Rajamani Krishna, Hongliang Lyu, Shinpei Kusaka, Wanqin Jin, Susumu Kitagawa
    JOURNAL OF MATERIALS CHEMISTRY A 5 (34) 17874 - 17880 2050-7488 2017/09 [Refereed][Not invited]
    Nano-porous coordination polymers (nano-PCPs), as a new class of crystalline material, have become a lucrative topic in coordination chemistry due to the facile tunability of their functional pore environments. However, elucidating the pathways for the rational design and preparation of nano-PCPs with various integrated properties for feasible gas separation remains a great challenge. Here, we demonstrate a new route to achieve nano-PCPs with an integrated pore system and physical properties using a reticular chemistry strategy. By optimizing the position and length of the shortest two alkyl groups in the channels, unprecedented phenomena of improved surface area, gas uptake, gas selectivity, thermal stability and chemical stability were observed in the PCPs, especially in NTU-14, the structure with a pendant ethyl group. Furthermore, the high performance of adsorption-and membrane-based separation makes NTU-14 a promising medium for CH4 purification from a mixture at room temperature.
  • Rika Ochi, Shin-ichiro Noro, Yuh Hijikata, Kazuya Kubo, Takayoshi Nakamura
    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (34) 4013 - 4019 1434-1948 2017/09 [Refereed][Not invited]
    We attempted the synthesis and crystallographic characterization of light-metal coordination polymers (CPs) using a 4-(methylsulfonyl)benzoate (msbza(-)) ligand with a charge-polarized neutral methylsulfonyl coordination moiety, in order to diversify the limited structures of light-metal CPs, as compared with heavy-metal CPs. As expected from the results of DFT calculations, all of the obtained CPs {three-dimensional (3D) [Mg2Na2(msbza)(6)(H2O)(3)](n) (1), two-dimensional (2D) [KH(msbza)(2)](n) (2) and 2D [Na(msbza)](n) (3)} exhibited coordination of the methylsulfonyl moiety to light-metal cations, in addition to coordination of the carboxylate. These structural features suggest that the use of a neutral methylsulfonyl coordination site is a powerful tool for the structural diversification of light-metal CPs. In addition, the 3D CP 1, with the rare and unique tetranuclear Mg2Na2 secondary building unit, showed an unprecedented single-crystal-to-single-crystal transformation via the low-crystalline state.
  • Takashi Takeda, Yasutaka Suzuki, Jun Kawamata, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19 (35) 23905 - 23909 1463-9076 2017/09 [Refereed][Not invited]
    A new strategy for controlling the electron-accepting ability of an anthraquinone (AQ)-based pi-molecular system is proposed to take advantage of intramolecular hydrogen bonding interactions. The electron-accepting properties of AQ are enhanced by the introduction of bulky arylsulfonamide groups into AQ derivatives due to the formation of effective intramolecular N-H center dot center dot center dot O hydrogen bonding interaction and stabilization of the anion radical state even in solution.
  • Shin-ichiro Noro, Takayoshi Nakamura
    NPG ASIA MATERIALS 9 p433  1884-4049 2017/09 [Refereed][Not invited]
    Fluorine, the element with the highest electronegativity and low electric polarizability, can produce a variety of characteristics, including specific adsorption sites for molecules as well as flexibility to the host materials. In this review, we will introduce fluorine-functionalized metal-organic frameworks/porous coordination polymers that show unique and unprecedented structures, structural transformations, and gas and vapor adsorption/separation properties derived from the fluorine characteristics.
  • Jingui Duan, Masakazu Higuchi, Jiajia Zheng, Shin-ichiro Noro, I-Ya Chang, Kim Hyeon-Deuk, Simon Mathew, Shinpei Kusaka, Easan Sivaniah, Ryotaro Matsuda, Shigeyoshi Sakaki, Susumu Kitagawa
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139 (33) 11576 - 11583 0002-7863 2017/08 [Refereed][Not invited]
    The prevalence of the condensed phase, interpenetration, and fragility of ruesoporous coordination polymers (meso-PCPs) featuring dense open metal sites (OMSs) place strict limitations en their preparation, as revealed by experimental and `theoretical reticular chemistry investigations. Herein, we propose a rational design of stabilized high-porosity meso-PCPs, employing a 'low-symmetry ligand in combination with the shortest linker, formic acid. The resulting dimeric dusters (PCP-31 and PCP-32) exhibit high surface areas, ultrahigh porosities, and high OMS derisities (3.76 and 3.29 nmol g(-1) respectively), enabling highly selective- and effective separation of C2H2 from C2H2/CO2 mixtures at 298 K, as verified by binding energy (BE) and electrostatic potentials (ESP) calculations.
  • Andreas Schneemann, Robin Rudolf, Sebastian Henke, Yukiko Takahashi, Hung Banh, Inke Hante, Christian Schneider, Shin-Ichiro Noro, Roland A. Fischer
    DALTON TRANSACTIONS 46 (25) 8198 - 8203 1477-9226 2017/07 [Refereed][Not invited]
    A series of four Zn2+ metal-organic frameworks containing functionalised isophthalate linkers and 4,4'-bipyridine pillars have been prepared and characterised. Isophthalates which contain -OC3H2n+1 alkoxy side chains (with n = 1, 2 or 3) form frameworks with a 3D pillared-layer topology instead of the typical 2D layer topology of the renowned coordination polymers with an interdigitated structure (CIDs), which is found for shorter -OC2H5 side chains. The gas adsorption properties of the materials were analysed using N-2, CO2 and O-2 adsorption measurements at low temperatures.
  • Yusuke Baba, Ryo Tsunashima, Norihisa Hoshino, Tomoyuki Akutagawa, Shin-Ichiro Noro, a, Takayoshi Nakamura
    Current Inorganic Chemistry 7 (1) 8 - 12 1877-9441 2017 [Refereed][Not invited]
  • Zhang, Z., Sadakane, M., Noro, S.-I., Hiyoshi, N., Yoshida, A., Hara, M., Ueda, W.
    Chemistry - A European Journal 23 (8) 1972 - 1980 2017 [Refereed][Not invited]
  • Shin-ichiro Noro, Rika Ochi, Kazuya Kubo, Takayoshi Nakamura
    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 89 (12) 1503 - 1509 0009-2673 2016/12 [Refereed][Not invited]
    Crystallization of neutral 3,5-pyridinedicarboxylic acid N-oxide (H-2-3,5-pydcao) molecules in the presence/absence of solvent molecules affords neutral hydrogen bond-supported one-dimensional, two-dimensional, and three-dimensional molecular networks of H-2-3,5-pydcao center dot DMF (1 center dot DMF), H-2-3,5-pydcao center dot H2O (1 center dot H2O), and H-2-3,5-pydcao (1), respectively, that have strong intermolecular hydrogen bonds of N delta+-O delta-center dot center dot center dot HOOC. These molecular networks were found to show reversible structural changes among 1, 1 center dot H2O, and 1 center dot DMF driven by solvent release/uptake.
  • Zhong-Sheng Cai, Shota Uchikawa, Norihisa Hoshino, Takashi Takeda, Li-Min Zheng, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    JOURNAL OF PHYSICAL CHEMISTRY B 120 (27) 6761 - 6770 1520-6106 2016/07 [Refereed][Not invited]
    Successive phase transitions of three kinds of simple 1:1 organic salts of laurylammonium (LA)-phenyl (3-pyridyl) phosphate derivative were examined in terms of thermal properties, single crystal Xray structural analyses, powder X-ray diffractions, and dielectric responses, where the phosphate anion was chemically modified from phenylphosphate (1) and 3-pyridylphosphate (2) to m-fluorophosphate (3). All 1:1 simple organic salts showed the successive solid-solid and solid-smectic A (SmA) phase transition with high thermal stability. Isostructural alternate cation-anion layer was observed in LA-1 and LA-2, and the packing structure of LA-3 was different from those of the former salts. The L-shaped cation-anion conformation in the molecular assemblies was transformed to the rod-like conformation through the phase transition to SmA phase, where both conformations coexisted in the intermediate solid phase of LA-2 and LA-3. The DSC, PXRD, and dielectric responses of LA-2 showed the antiferroelectric-paraelectric phase transition couple with the flip-flop motion of 3-pyridyl ring along the long axis of the molecule. On the contrary, such molecular motion of the phenyl ring did not show the dielectric phase transition due to no dipole change during molecular rotation of phenyl ring. The motional freedom of m-fluorophenyl ring in LA-3 was completely suppressed by the steric hindrance from the neighboring anions in the absence of dielectric ordering.
  • Rika Ochi, Shin-ichiro Noro, Yuichi Kamiya, Kazuya Kubo, Takayoshi Nakamura
    CHEMISTRY-A EUROPEAN JOURNAL 22 (31) 11042 - 11047 0947-6539 2016/07 [Refereed][Not invited]
    A two-dimensional (2D) layered Mg-II coordination polymer (CP) with a high tolerance for H2O was designed, synthesised, and crystallographically characterised. The synthesis was achieved by the introduction of a flexible 2D layered structure composed of MgII ions and isonicotinate N-oxide ligands. Owing to its high H2O tolerance, the obtained 2D layered structure has the flexibility to repeatedly adsorb a large amount of H2O associated with interlayer expansion and enable the removal of H2O from a H2O/2-propanol mixed vapour. These results indicate that the CP could be an excellent dehydrating agent.
  • Masashi Yoshitake, Kazuya Kubo, Toru Endo, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 89 (3) 354 - 360 0009-2673 2016/03 [Refereed][Not invited]
    Coordination polymers based on oxalate-bridged {[(MnCrIII)-Cr-II- (oxalate)(3)](-)}(infinity) complexes of (DAT-2H(2+))(DCH[18]crown-6)(2)[Mn-II(CH3OH)Cr-III(oxalate)(3)](-)(2)(CH3OH)(3) and (DABCO-H+)(2)(DABCO-2H(2+))[Mn-II(CH3OH)(Cl-)Cr-III(oxalate)(3)](2-)(2-) (CH3OH), where DAT, DABCO, and DCH[18]crown-6 denote 2,5-diaminotoluene, 1,4-diazabicyclo[2.2.2]octane, and cis-syncis-dicyclohexano[18]crown-6, respectively, were synthesized. The crystal structure of the former complex was composed of [Mn-II(Lambda)(CH3OH)Cr-III(Lambda)(oxalate)(3)](-) units, whereas that of the latter crystal was composed of [Mn-II(Lambda)(CH3OH)(Cl-)-Cr-III (Delta)(oxalate)(3)](2-) units. The large flexible supramolecular cation in the former provided the two-dimensional structure of [Mn-II(Lambda)(CH3OH)Cr-III(Lambda)(oxalate)(3)](-), although the two-dimensional honeycomb structure of the {[Mn-II(Delta)Cr-III(Lambda)-(oxalate)(3)](-)}infinity and {[Mn-II(Lambda)Cr-III(Delta)(oxalate)(3)](-)}(infinity) networks are often observed for the oxalate complexes. The round-shaped DABCO molecule in the latter induced a one-dimensional chain structure of [Mn-II(Lambda)(CH3OH)Cr-III(Delta)(oxalate)(3)](-). The former crystal showed a magnetic field dependence of magnetization typical for a spin-canting system.
  • Jun Xiong, Kazuya Kubo, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    CRYSTAL GROWTH & DESIGN 16 (2) 800 - 807 1528-7483 2016/02 [Refereed][Not invited]
    To investigate the network structure of inorganic organic hybrid crystals, we synthesized a series of assemblies based on polyoxometallates (POMs) [SMo12O402-] and different supramolecular cations consisting of anilinium and crown ether derivatives. The compounds [(m-XAni(+))(B-[18]crown-6)](2)[SMo12O402-] (Ani(+) = anilinium; B [18] crown-6 = benzo[18]crown-6; X = F (1), Cl (2), Br (3), or I (4)), [ (4-MeAn(+)) (B [18] crown-6)](2)[SMo12O4020]center dot CH3CN (5), [(4-MeAni(+)) (DB [18] crown-6)](2)[SMo12O402-]center dot 2CH(3)CN (6), [(3-F-4-MeAni(+)) (DB [18] crown-6)](2)[SMo12O402-]center dot 2CH(3)CN (7), and [ (3-F-4-MeAni(+))(2)(DB [30]crown-10)] [SMo12O402-]center dot 2CH(3)CN (8) (4-MeAni(+) = 4-methylanilinium; DB [18] crown-6 = dibenzo[18]crown-6; 3-F-4-MeAni = 3-fluoro-4-methylanilinium; DB[30] crown-10 = dibenzo[30]crown-10) were synthesized. Their crystal architectures were characterized according to the size and charge of the supramolecular cations. In 1-4, two adjacent supramolecular cations ([(m-XAni(+))(B[18]crown-6)]) were connected through pi center dot center dot center dot pi interactions forming sandwich-type dimers with the cations that were stacked in an antiparallel manner. In 8, DB[30] crown-10 included two cations constructing a larger divalent supramolecular cation [(3-F-4-MeAni(+))(2)(DB[30]crown-10)]. In 1-4 and 8, the ratio between [SMo12O402-] and the supramolecular cations was 1:1, and the latter formed rectangular-assembled structures. In 5, the pi center dot center dot center dot pi stacking interaction was present in the adjacent B[18]crown-6. Monovalent supramolecular cations were present in 5-7 with a ratio of 1:2 between [SMo(12)O4(02)(-)] and the supramolecular cations. The supramolecular cations formed hexagonal-assembled structures.
  • Kiyonori Takahashi, Norihisa Hoshino, Takashi Takeda, Koichiro Satomi, Yasutaka Suzuki, Shin-ichiro Noro, Takayoshi Nakamura, Jun Kawamata, Tomoyuki Akutagawa
    DALTON TRANSACTIONS 45 (8) 3398 - 3406 1477-9226 2016 [Refereed][Not invited]
    Polar crystals exhibiting second-order harmonic generation (SHG) were designed by adjusting the intermolecular interactions of mononuclear Cu(II) complexes in which one H2O, two pyridines (py), and two p-substituted benzoate (p-RBA) ligands (R = F, Cl, Br, I, CH3, and OCH3) were coordinated to a Cu(II) ion, forming a penta-coordinated asymmetric [Cu(II)(p-RBA)(2)(py)(2)(H2O)] mononuclear structure with a permanent dipole moment along the direction of the Cu-OH2 coordination axis. Each asymmetric [Cu(II) (p-RBA)(2)(py)(2)(H2O)] complex formed a polar one-dimensional hydrogen-bonded chain, [Cu(II) (p-RBA)(2)(py)(2)(H2O)](8), between the non-coordinated carboxylate oxygen atom of the p-RBA ligand and the hydrogen atom of the H2O molecule. The formation of a polar crystal depended on the arrangement of polar hydrogen-bonded chains; the parallel arrangement of each polar chain resulted in a polar crystal. The chemical design of the R group in the p-RBA ligand enabled tuning of the magnitude of the inter-chain interactions and crystal polarity; polar crystals were obtained using p-RBA ligands with R = Cl, Br, I, and OCH3. In contrast, apolar crystals were grown from complexes containing p-RBA ligands with R = F and CH3. In all crystals, a polar two-dimensional (2D) layer constructed from the parallel polar [Cu(II) (p-RBA)(2)(py)(2)(H2O)]8 chain arrangement was formed based on weak van der Waals C-H...O-- interactions between the hydrogen atom of py and the carboxylate oxygen atom of the p-RBA ligand. Weak interlayer halogen (X)center dot center dot center dot pi and multipoint C-H center dot center dot center dot pi interactions played important roles in forming parallel arrangements of polar 2D layers and polar crystals, but there were no effective intermolecular interactions between the polar 2D layers in apolar [Cu(II)(p-FBA)(2)(py)(2)(H2O)] and [Cu(II)(p-CH(3)BA)(2)(py)(2)(H2O)] crystals. The magnitudes of the interlayer interactions in the polar crystals were larger than those in the apolar ones because of the effective intermolecular interactions. The SHG intensities of the four polar crystals were approximately 0.7 times larger than that of sucrose.
  • Yu Ohshima, Kazuya Kubo, Takashi Matsumoto, Heng-Yun Ye, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    CRYSTENGCOMM 18 (41) 7959 - 7964 1466-8033 2016 [Refereed][Not invited]
    Supramolecular crystals having one-dimensional (1d) columnar structures were constructed by using supramolecules based on tst-DCH[18]crown-6 (tst-DCH = trans-syn-trans-dicyclohexano). In the crystal of (Ani(+))(tst-DCH[18]crown-6)[Ni(dmit)(2)](-) (1) and (m-FAni(+))(tst-DCH[18]crown-6)[Ni(dmit)(2)](-) (2) (Ani(+) = anilinium(+), m-FAni(+) = m-fluoroanilinium(+), dmit(2-) = 2-thioxo-1,3-dithiole-4,5-dithiolate), the tst-DCH[18]crown-6 formed supramolecular cations with Ani(+) and m-FAni(+), respectively, through N-H center dot center dot center dot O hydrogen bonds. The planar conformation of tst-DCH[18]crown-6 molecules in the crystals provided bidirectional hydrogen bonding from the upper and lower side of the molecule that were the driving forces for the construction of the 1d supramolecular architecture. The results provided a method to control arrangements of crown ether-based supramolecules in 1d columns that could be used for channels and/or molecular nanomachines such as molecular rotators.
  • Andreas Schneemann, Yukiko Takahashi, Robin Rudolf, Shin-ichiro Noro, Roland A. Fischer
    JOURNAL OF MATERIALS CHEMISTRY A 4 (33) 12963 - 12972 2050-7488 2016 [Refereed][Not invited]
    Most studies on flexible MOFs which suggest good separation properties of the framework are solely based on single component isotherms and conclusions drawn from these. However, many factors are not considered, particularly the change of the pore space after the opening of the framework can have a distinct effect on the adsorption of a second gas present in a real separation problem that does not induce the phase transition of the material. Within this study, we focus on a series of flexible pillared-layered MOFs of the type [Zn-2(fu-bdc)(2)(dabco)](n) bearing flexible side chains and analyze the gas adsorption behavior when the material is exposed to mixtures of CO2 with other adsorptives, including N-2, CH4, C2H6 and C3H8, to evaluate the influence of the co-adsorbate on the sorption selectivity and phase transition under these conditions.
  • Noro Shin-ichiro, Ochi Rika, Inubushi Yasutaka, Kubo Kazuya, Nakamura Takayoshi
    MICROPOROUS AND MESOPOROUS MATERIALS 216 92 - 96 1387-1811 2015/11/01 [Refereed][Not invited]
  • Qian-Chong Zhang, Takashi Takeda, Norihisa Hoshino, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    Crystal Growth & Design 15 5705 - 5711 2015/11 [Refereed][Not invited]
  • Kiyonori Takahashi, Norihisa Hoshino, Takashi Takeda, Shin-ichiro Noro, Takayoshi Nakamura, Sadamu Takeda, Tomoyuki Akutagawa
    Inorganic Chemistry 54 (19) 9423 - 9431 0020-1669 2015/10/05 [Refereed][Not invited]
  • Noro Shin-ichiro, Matsuda Ryotaro, Hijikata Yuh, Inubushi Yasutaka, Takeda Sadamu, Kitagawa Susumu, Takahashi Yukiko, Yoshitake Masashi, Kubo Kazuya, Nakamura Takayoshi
    CHEMPLUSCHEM 80 (10) 1517 - 1524 2192-6506 2015/10 [Refereed][Not invited]
  • Yuya Yoshii, Ken-ichi Sakai, Norihisa Hoshino, Takashi Takeda, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    CrystEngComm 17 (31) 5962 - 5969 2015/08 [Refereed][Not invited]
  • Takashi Takeda, Jun’ya Tsutsumi, Tatsuo Hasegawa, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    Journal of Materials Chemistry C 3 (13) 3016 - 3022 2050-7526 2015/07 [Refereed][Not invited]
  • Toru Endo, Kazuya Kubo, Masashi Yoshitake, Shin-ichiro Noro, Norihisa Hoshino, Tomoyuki Akutagawa, Takayoshi Nakamura
    Crystal Growth & Design 15 (3) 1186 - 1193 1528-7483 2015/05 [Refereed][Not invited]
  • Manami Endo, Yuta Nakane, Kiyonori Takahashi, Norihisa Hoshino, Takashi Takeda, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    J. Phys. Chem. B 119 (4) 1768 - 1777 1520-6106 2015/03 [Refereed][Not invited]
  • Kobayashi A, Suzuki Y, Ohba T, Ogawa T, Matsumoto T, Noro S.-I, Chang H.-C, Kato M
    Inorganic Chemistry 54 (6) 2522 - 2535 2015 [Refereed][Not invited]
  • Rijeesh K, Hashim P. K, Noro Shin-ichiro, Tamaoki Nobuyuki
    CHEMICAL SCIENCE 6 (2) 973 - 980 2041-6520 2015 [Refereed][Not invited]
  • Zhenxin Zhang, Masahiro Sadakane, Shin-ichiro Noro, Toru Murayama, Takashi Kamachi, Kazunari Yoshizawa, Wataru Ueda
    J. Mater. Chem. A Royal Society of Chemistry ({RSC}) 3 (2) 746  2015 [Refereed][Not invited]
  • Noro Shin-ichiro, Mizutani Junya, Hijikata Yuh, Matsuda Ryotaro, Sato Hiroshi, Kitagawa Susumu, Sugimoto Kunihisa, Inubushi Yasutaka, Kubo Kazuya, Nakamura Takayoshi
    NATURE COMMUNICATIONS 6 2041-1723 2015/01 [Refereed][Not invited]
  • J. Xiong, K. Kubo, S. Noro, T. Akutagawa, N. Nakamura
    CrystEngComm 17 856 - 861 2014/12 [Refereed][Not invited]
  • Yuta Shishido, Hayato Anetai, Takashi Takeda, Norihisa Hoshino, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    J. Phys. Chem. C. 118 21204 - 21214 2014/08 [Refereed][Not invited]
  • Kiyonori Takahashi, Norihisa Hoshino, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa
    Science of Advanced Materials 6 1417 - 1424 2014/07 [Refereed][Not invited]
  • Kiyonori Takahashi, Norihisa Hoshino, Takashi Takeda, Shin-ichiro Noro, Takayoshi Nakamura, Sadamu Takeda, Tomoyuki Akutagawa
    Dalton Transactions 43 9081 - 9089 2014/06 [Refereed][Not invited]
  • Shin-ichiro Noro, Kei Hasegawa, Kazuya Kubo, Takayoshi Nakamura
    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 87 (5) 623 - 625 0009-2673 2014/05 [Refereed][Not invited]
    The one-dimensional Zn(II) coordination polymer, {[Zn-2(chdc)(2)(mepy)(4)]center dot 6H(2)O}(n) (1 superset of 6H(2)O, chdc: trans-1,4-cyclohexanedicarboxylate and mepy: 4-methylpyridine), stabilized unique water aggregate, finite winding (H2O)(12) chains.
  • Atsushi Kobayashi, Tadashi Ohba, Erika Saitoh, Yui Suzuki, Shin-ichiro Noro, Ho-Chol Chang, Masako Kato
    INORGANIC CHEMISTRY 53 (6) 2910 - 2921 0020-1669 2014/03 [Refereed][Not invited]
    Coordination polymerization reactions between ruthenium(II) metalloligands [Ru(n,n'-dcbpy)](4-) ([nRu]; n = 4, 5; n,n'-dcbpy = n,n'-dicarboxy-2,2'-bipyridine) and several divalent metal salts in basic aqueous solutions afforded porous luminescent complexes formulated as [Mg(H2O)(6)]{[Mg(H2O)(3)][4Ru]center dot 4H(2)O} (Mg-2[4Ru]center dot 13H(2)O), [Mg-2(H2O)(9)][5Ru]center dot 10H(2)O (Mg-2[5Ru]center dot 19H(2)O), {[Sr-4(H2O)(9)][4Ru](2)center dot 9H(2)O} (Sr-2[4Ru]center dot 9H(2)O)(2), {[Sr-2(H2O)(8)][5Ru]center dot 6H(2)O} (Sr-2[5Ru]center dot 14H(2)O), and {[Cd-2(H2O)(2)][5Ru]center dot 10H(2)O} (Cd-2[5Ru]center dot 12H(2)O). Single-crystal X-ray structural analyses revealed that the divalent metal ions were commonly coordinated by the carboxyl groups of the [nRu] metalloligand, forming porous frameworks with a void fraction varying from 11.4% Mg-2[4Ru]center dot 13H(2)O to 43.9% Cd-2[5Ru]center dot 12H(2)O. M-2[4Ru]center dot nH(2)O showed a reversible structural transition accompanied by water and methanol vapor adsorption/desorption, while the porous structures of M-2[5Ru]center dot nH(2)O were irreversibly collapsed by the removal of crystal water. The triplet metal-to-ligand charge-transfer emission energies of M-2[4Ru]center dot nH(2)O were lower than those of [4Ru] in aqueous solution, whereas those of M-2[5Ru]center dot nH(2)O were close to those of [5Ru] in aqueous solution. These results suggested that the position of the coordination site in the metalloligand played an important role not only on the structure of the porous framework but also on the structural flexibility involving the guest adsorption/desorption properties.
  • Yin-Nan Yan, Kazuya Kubo, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    Bull. Chem. Soc. Jpn 8 (3) 417 - 419 2014/03 [Refereed][Not invited]
  • Liu Zun-qi, Kubo Kazuya, Noro Shin-ichiro, Akutagawa Tomoyuki, Nakamura Takayoshi
    CRYSTAL GROWTH & DESIGN 14 (2) 537 - 543 1528-7483 2014/02 [Refereed][Not invited]
  • Yuki Noda, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    SCIENTIFIC REPORTS 4 3758  2045-2322 2014/01 [Refereed][Not invited]
    Gold nanoparticle assemblies possess diverse application potential, ranging from industrial nanotechnology to medical biotechnology. Because the structures and properties of assemblies are directly affected by the stabilization mechanism between the organic molecules serving as protecting ligands and the gold nanoparticle surface, it is crucial to find and investigate new stabilization mechanisms. Here, we report that pi-conjugated phthalocyanine rings can serve as stabilizing ligands for gold nanoparticles. Bis(phthalocyaninato)lutetium(III) (LuPc2) or bis(phthalocyaninato) terbium(III) (TbPc2), even though complex, do not have specific binding units and stabilize gold nanoparticles through van der Waals interaction between parallel adsorbed phthalocyanine ligands and the gold nanoparticle surface. AC magnetic measurements and the electron-transport properties of the assemblies give direct evidence that the phthalocyanines are isolated from each other. Each nanoparticle shows weak electronic coupling despite the short internanoparticle distance (similar to 1 nm), suggesting Efros-Shklovskii-type variable-range hopping and collective single-electron tunnelling behaviours.
  • Mohammad Razaul Karim, Mohammad Razaul Karim, Kazuto Hatakeyama, Takeshi Matsui, Hiroshi Takehira, Takaaki Taniguchi, Takaaki Taniguchi, Michio Koinuma, Michio Koinuma, Yasumichi Matsumoto, Yasumichi Matsumoto, Tomoyuki Akutagawa, Takayoshi Nakamura, Shin Ichiro Noro, Teppei Yamada, Hiroshi Kitagawa, Hiroshi Kitagawa, Shinya Hayami, Shinya Hayami
    Journal of the American Chemical Society 135 (22) 8097 - 8100 0002-7863 2013/06/05 [Refereed][Not invited]
    We measured the proton conductivity of bulk graphite oxide (GO′), a graphene oxide/proton hybrid (GO-H), and a graphene oxide (GO) nanosheet for the first time. GO is a well-known electronic insulator, but for proton conduction we observed the reverse trend, as it exhibited superionic conductivity. The hydrophilic sites present in GO as -O-, -OH, and -COOH functional groups attract the protons, which propagate through hydrogen-bonding networks along the adsorbed water film. The proton conductivities of GO′ and GO-H at 100% humidity were ∼10 -4 and ∼10 -5 S cm -1 , respectively, whereas that for GO was amazingly high, nearly 10 -2 S cm -1 . This finding indicates the possibility of GO-based perfect two-dimensional proton-conductive materials for applications in fuel cells, sensors, and so on. © 2013 American Chemical Society.
  • Shin-ichiro Noro, Katsuo Fukuhara, Yuh Hijikata, Kazuya Kubo, Takayoshi Nakamura
    INORGANIC CHEMISTRY 52 (10) 5630 - 5632 0020-1669 2013/05 [Refereed][Not invited]
    The use of divalent Cu-II ions and an anion-mixing method led to the rational construction of a porous coordination polymer bridged by weak Lewis base inorganic CF3SO3- monoanions.
  • Shin-ichiro Noro
    Bull. Jpn. Soc. Coord. Chem. 61 38 - 45 2013/05 [Refereed][Not invited]
  • Katsuo Fukuhara, Shin-ichiro Noro, Kunihisa Sugimoto, Tomoyuki Akutagawa, Kazuya Kubo, Takayoshi Nakamura
    INORGANIC CHEMISTRY 52 (8) 4229 - 4237 0020-1669 2013/04 [Refereed][Not invited]
    Porous coordination polymer (PCP) polymorphs with the formula [Cu(CF3SO3)(2)(bpp)(2)](n) [1 and 2, where bpp = 1,3-bis(4-pyridyl)propane] have been synthesized and crystallographically characterized, and their distinguishable porous properties have been investigated. 1 was obtained by the removal of guest acetone molecules from one-dimensional PCP {[Cu(CF3SO3)(bpp)(2)]center dot CF3SO3 center dot 2acetone}(n) (1 superset of 2acetone), while 2 was derived from two-dimensional PCP {[Cu(CF3SO3)(2)(bpp)(2)]center dot H2O} (2 superset of H2O) by the loss of guest H2O molecules. The desolvated PCPs 1 and 2 with the same formula [Cu(CF3SO3)(2)(bpp)(2)] showed distinguishable structures, suggesting PCP polymorphs. In addition, their adsorption behaviors were completely different: 1 showed adsorption with the structural transformation from closed to open forms, while 2 appeared to expand its framework for only as long as was required for the passage of guest molecules. To the best of our knowledge, PCP polymorphs showing either of two different types of flexible pores are very rare.
  • Kazuya Kubo, Yin-Nan Yan, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    Inorganica Chimica Acta 404 206 - 209 2013/04 [Refereed][Not invited]
  • Md Jafar Sharif, Miho Yamauchi, Shoichi Toh, Syo Matsumura, Shin-Ichiro Noro, Kenichi Kato, Masaki Takata, Tatsuya Tsukuda
    Nanoscale 5 (4) 1489 - 1493 2040-3364 2013/02/21 [Refereed][Not invited]
    FexCo100-x nanoalloys (NAs) with 20 ≤ x ≤ 80 were prepared by hydrogen reduction of Fe-Co oxide nano-composites, which were composed of mixed phases (or domains) of Fe2O3 and CoO. In situ X-ray diffraction (XRD) measurements using synchrotron radiation clearly showed development of a solid-solution Fe-Co phase by hydrogen reduction from the oxide composites. High-resolution transmission electron microscopy (TEM), high-angle annular dark-field scanning TEM and powder XRD revealed that Fe-Co NAs form a single crystal structure and the two elements are mixed homogeneously. The saturation magnetization depends on the size and metal composition and shows the highest value (250 emu g-1) for the Fe 70Co30 NA in the size range of 30-55 nm, which is comparable to that of the Fe70Co30 bulk alloy (245 emu g-1). This high magnetization is attributable to high crystallinity and homogeneous mixing of constituent atoms, which are attained by thermal treatment of oxide phases under a hydrogen atmosphere. © 2013 The Royal Society of Chemistry.
  • Shin-ichiro Noro, Yuh Hijikata, Munehiro Inukai, Tomohiro Fukushima, Satoshi Horike, Masakazu Higuchi, Susumu Kitagawa, Tomoyuki Akutagawa, Takayoshi Nakamura
    INORGANIC CHEMISTRY 52 (1) 280 - 285 0020-1669 2013/01 [Refereed][Not invited]
    High selectivity and low-energy regeneration for adsorption of CO2 gas were achieved concurrently in a two-dimensional Cu(II) porous coordination polymer, [Cu-(PF6)(2)(4,4'-bpy)(2)] (4,4'-bpy = 4,4'-bipyridine), containing inorganic fluorinated PF6- anions that can act as moderate interaction sites for CO2 molecules.
  • Shin-ichiro Noro, Katsuo Fukuhara, Kunihisa Sugimoto, Yuh Hijikata, Kazuya Kubo, Takayoshi Nakamura
    DALTON TRANSACTIONS 42 (31) 11100 - 11110 1477-9226 2013 [Refereed][Not invited]
    We report the syntheses and crystal structures of novel porous assemblies of coordination complexes (PACs) with/without guest molecules, alpha-[Cu(A)(2)(py)(4)] (alpha-PAC-2-A (A = PF6, BF4, CF3SO3, and CH3SO3); py = pyridine), gamma-{[Cu(PF6)(2)(py)(4)]center dot 2guest} (gamma-PAC-2-PF6 superset of 2guest (guest = acetone and py)), gamma-{[Cu(BF4)(2)-(py)(4)]center dot 2acetone} (gamma-PAC-2-BF4 superset of 2acetone), and beta-{[Cu(CH3SO3)(2)(py)(4)]center dot 2.67H(2)O} (beta-PAC-2-CH3SO3 superset of 2.67H(2)O). The single-crystal X-ray diffraction analyses of alpha-PAC-2-A show that alpha-PAC-2-A have dense packing structures, in which anions of the discrete coordination complexes form weak hydrogen-bonding and anion-pi interactions. In contrast, gamma-PAC-2-PF6 superset of 2guest, gamma-PAC-2-BF4 superset of 2acetone, and beta-PAC-2-CH3SO3 superset of 2.67H(2)O form guest-including structures with coordination environments around the Cu-II atoms similar to the a-forms. The vapour adsorption measurements for MeCN and acetone in alpha-PAC-2-A suggest that the adsorption associated with structural transformations is induced by weak Lewis-base PF6- and BF4- anions covered only with fluorine atoms, which weaken the host-host interactions.
  • Heng-Yun Ye, Yi Zhang, Shin-ichiro Noro, Kazuya Kubo, Masashi Yoshitake, Zun-Qi Liu, Hong-Ling Cai, Da-Wei Fu, Hirofumi Yoshikawa, Kunio Awaga, Ren-Gen Xiong, Takayoshi Nakamura
    Sci. Rep. 3 2249  2013 [Refereed][Not invited]
  • Liu Zun-qi, Kubo Kazuya, Lin Li, Hoshino Norihisa, Noro Shin-ichiro, Akutagawa Tomoyuki, Nakamura Takayoshi
    DALTON TRANSACTIONS 42 (8) 2930 - 2939 1477-9226 2013 [Refereed][Not invited]
  • Toru Endo, Kazuya Kubo, Masashi Yoshitake, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    Chemistry Letters 42 137 - 139 2013/01 [Refereed][Not invited]
  • Noro Shin-ichiro, Fukuhara Katsuo, Kubo Kazuya, Nakamura Takayoshi
    CHEMISTRY LETTERS 41 (10) 1314 - 1316 0366-7022 2012/10/05 [Refereed][Not invited]
  • Noro Shin-ichiro, Kubo Kazuya, Nakamura Takayoshi
    CHEMISTRY LETTERS 41 (8) 772 - 773 0366-7022 2012/08/05 [Refereed][Not invited]
  • Ryo Tsunashima, Takumi Matsumoto, Wataru Niiho, Mizuki Kimura, Kei Kondo, Yoshihiko Suyama, Yukihiro Nishioka, Jun Kawamata, Shin-ichiro Noro, Takayoshi Nakamura, Tomoyuki Akutagawa, Katsuya Ishiguro
    Dalton Transactions 41 (33) 10060 - 10064 1477-9226 2012/06 [Refereed][Not invited]
  • Ye Qiong, Shi Ping-Ping, Chen Zi-Qi, Akutagawa Tomoyuki, Noro Shin-ichiro, Nakamura Takayoshi
    INORGANIC CHEMISTRY COMMUNICATIONS 20 219 - 224 1387-7003 2012/06 [Refereed][Not invited]
  • Qiong Ye, Ping-Ping Shi, Zi-Qi Chen, Tomoyuki Akutagawa, Shin-ichiro Noro, Takayoshi Nakamura
    European Journal of Inorganic Chemistry 2012 3732 - 3739 2012/05 [Refereed][Not invited]
  • Daigoro Endo, Tomoyuki Akutagawa, Kazuya Kubo, Shin-ichiro Noro, Leroy Cronin, Takayoshi Nakamura
    Bulletin of the Chemical Society of Japan 85 305 - 315 2012/02 [Refereed][Not invited]
  • Qiong Ye, Kiyonori Takahashi, Norihisa Hoshino, Takemitsu Kikuchi, Tomoyuki Akutagawa, Shin-ichiro Noro, Sadamu Takeda, Takayoshi Nakamura
    Chemistry-A European Journal 17 14442 - 14449 2011/09 [Refereed][Not invited]
  • Qiong Ye, Tomoyuki Akutagawa, Norihisa Hoshino, Takemitsu Kikuchi, Shin-ichiro Noro, Ren Gen Xiong, Takayoshi Nakamura
    Crystal Growth & Design 11 4175 - 4182 2011/08 [Refereed][Not invited]
  • Tomoyuki Akutagawa, Fumito Kudo, Ryo Tsunashima, Shin-ichiro Noro, Leroy Cronin, Takayoshi Nakamura
    Inorganic Chemistry 50 (14) 6711 - 6718 0020-1669 2011/07/18 [Refereed][Not invited]
  • Ryo Tsunashima, De-Liang Long, Toru Endo, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura, Raul Quesada Cabrera, Paul F. McMillan, Paul Kogerler, Leroy Cronin
    Physical Chemistry Chemical Physics 2011 7295 - 7297 2011/07 [Refereed][Not invited]
  • Shin-ichiro Noro, Katsuo Fukuhara, Kazuya Kubo, Takayoshi Nakamura
    CRYSTAL GROWTH & DESIGN 11 (6) 2379 - 2385 1528-7483 2011/06 [Refereed][Not invited]
    A one-dimensional Cu(II) coordination polymer {[Cu(bpetha)(2,2'-bPY)(MeOH)]center dot 2PF(6)}(n) (bPetha =1,2-bis(4-pyridyl)ethane; 2,2'-bpy =2,2'-bipyridine) with wide coordination space at the axial site was rationally synthesized and crystallographically characterized, in which [Cu(2,2'-bpy)] units are bridged by bpetha ligands, forming a one-dimensional zigzag chain that shows smooth adsorption for EtOH, MeOH, and H2O vapors.
  • Toru Endo, Tomoyuki Akutagawa, Shin-ichiro Noro, Takayoshi Nakamura
    Dalton Transactions 40 (7) 1491 - 1496 1477-9226 2011/04 [Refereed][Not invited]
  • HARA Hirofumi, KOBAYASHI Atsushi, NORO Shin‐ichiro, CHANG Ho‐Chol, KATO Masako
    Dalton Trans. 40 (31) 8012 - 8018 1477-9234 2011 [Refereed][Not invited]
  • Ikobayashi A, Suzuki Y, Ohba T, Noro S.-I, Chang H.-C, Kato M
    Inorganic Chemistry 50 (6) 2061 - 2063 0020-1669 2011 [Refereed][Not invited]
  • Ye Qiong, Akutagawa Tomoyuki, Ye Heng-Yun, Hang Tian, Ge Jia-Zhen, Xiong Ren-Gen, Noro Shin-ichiro, Nakamura Takayoshi
    CRYSTENGCOMM 13 (20) 6185 - 6191 1466-8033 2011 [Refereed][Not invited]
  • Shin-ichiro Noro, Tomonori Ohba, Katsuo Fukuhara, Yukiko Takahashi, Tomoyuki Akutagawa, Takayoshi Nakamura
    DALTON TRANSACTIONS 40 (10) 2268 - 2274 1477-9226 2011 [Not refereed][Not invited]
    The quasi-Werner-type copper(II) complex, [Cu(PF(6))(2)(4-mepy)(4)] (1), in which 4-mepy is the 4-methylpyridine ligand, has flexible and polar axial bonds of Cu-PF(6). Flexibility of the Cu-PF(6) bonds induces diverse and unprecedented guest-inclusion structures, such as {[Cu(PF(6))(2)(4-mepy)(4)][Cu(PF(6))(4-mepy)(4)(acetone)]center dot PF(6)center dot 4acetone} (gamma-1 superset of 2.5acetone), {[Cu(PF(6))(2)(4-mepy)(4)][Cu(PF(6))(4-mepy)(4)(2-butanone)]center dot PF(6)center dot 3.5(2-butanone)} (gamma-1 superset of 2.25(2-butanone)), {[Cu(PF(6))(2)(4-mepy)(4)][Cu(PF(6))(4-mepy)(4)(H(2)O)]center dot PF(6)center dot 4benzene} (gamma-1 superset of 0.5H(2)O center dot 2benzene), and {[Cu(PF(6))(2)(4-mepy)(4)]center dot 2benzene} (gamma-1 superset of 2benzene). Exposure of the dense form, alpha-1, to benzene vapor affords the benzene-inclusion complex {[Cu(PF(6))(2)(4-mepy)(4)]center dot 2benzene} (gamma-1 superset of 2benzene), all benzene guests of which are easily removed by vacuum drying, reforming guest-free, dense alpha-1' with smaller sized crystals than alpha-1. In contrast to alpha-1, which shows almost no CO(2) adsorption, alpha-1' adsorbs CO(2) gas with structural transformations, this being the first example that exhibits adsorption of gas in a dense Werner-type complex and a drastic change in adsorption properties depending on the size of the crystals.
  • Yuki Noda, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    Physical Review B 82 205420  2010/10 [Refereed][Not invited]
  • Qiong Ye, Tomoyuki Akutagawa, Shin-ichiro Noro, Takayoshi Nakamura, Ren-Gen Xiong
    Crystal Growth & Design 10 (11) 7856 - 7860 2010/09 [Refereed][Not invited]
  • Qiong Ye, Tomoyuki Akutagawa, Toru Endo, Shin-ichiro Noro, Takayoshi Nakamura, Ren-Gen Xion
    Inorganic Chemistry 49 8591 - 8600 2010/07 [Refereed][Not invited]
  • Shin-Ichiro Noro, Susumu Kitagawa
    The Supramolecular Chemistry of Organic-Inorganic Hybrid Materials 235 - 269 2010/06/16 [Refereed][Not invited]
  • Tomoyuki Akutagawa, Daisuke Sato, Ye Qiong, Toru Endo, Shin-ichiro Noro, Sadamu Takeda, Takayoshi Nakamura
    Dalton Transactions 39 (35) 8219 - 8227 1477-9226 2010/06 [Refereed][Not invited]
  • Hosokai Takuya, Mitsuo Noritaka, Noro Shin-ichiro, Nakamura Takayoshi, Kera Satoshi, Sakamoto Kazuyuki, Ueno Nobuo
    CHEMICAL PHYSICS LETTERS 487 (1-3) 67 - 70 0009-2614 2010/02/25 [Refereed][Not invited]
  • Kobayashi A, Hara H, Noro S.-I, Kato M
    Dalton Transactions 39 (14) 3400 - 3406 1477-9234 2010 [Refereed][Not invited]
  • Kobayashi A, Dosen M.-A, Chang M, Nakajima K, Noro S.-I, Kato M
    Journal of the American Chemical Society 132 (43) 15286 - 15298 0002-7863 2010 [Refereed][Not invited]
  • Tomoyuki Akutagawa, Hiroyuki Koshinaka, Qiong Ye, Shin-ichiro Noro, Jun Kawamata, Hiroshi Yamaki, Takayoshi Nakamura
    Chemistry: An Asian Journal 5 520 - 529 2010 [Refereed][Not invited]
  • Shin-ichiro Noro
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS 12 (11) 2519 - 2531 1463-9076 2010 [Not refereed][Not invited]
    Porous coordination polymers or metal-organic frameworks constructed from metal ions and organic ligands have attracted much attention as next-generation porous materials due to their high designability, regularity, flexibility, and porosity. In particular, the Cu(II) ion with Jahn-Teller distortion can offer unique functions (coordination flexibility, Lewis acid property, and polarity) to porous frameworks. In this Perspective, we focus on porous Cu(II) coordination polymers; their unique characteristics and potential future applications are illustrated by recent experimental results.
  • Shin-Ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    Chemical Communications 46 (18) 3134 - 3136 1359-7345 2010 [Not refereed][Not invited]
    A flexible one-dimensional Cu(II) coordination polymer with shape-recognizing space shows selective adsorption of larger 2-butanone guests from Lewis-base mixtures containing 2-butanone-EtOH or 2-butanone-MeOH. © The Royal Society of Chemistry 2010.
  • Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    CHEMICAL COMMUNICATIONS 46 (25) 4619 - 4621 1359-7345 2010 [Not refereed][Not invited]
    The dinuclear Cu(II) complex bridged by a single F- anion has orthogonal Jahn-Teller axes, which induce a ferromagnetic interaction between the intramolecular Cu(II) ions.
  • Shin-ichiro Noro, Daisuke Tanaka, Hirotoshi Sakamoto, Satoru Shimomura, Susumu Kitagawa, Sadamu Takeda, Kazuhiro Uemura, Hidetoshi Kita, Tomoyuki Akutagawa, Takayoshi Nakamura
    CHEMISTRY OF MATERIALS 21 (14) 3346 - 3355 0897-4756 2009/07 [Not refereed][Not invited]
    Introducing polar Cu-PF6 parts into a coordination framework will open new routes in the fabrication of high-performance and/or novel functional porous materials. We have designed and synthesized the one-dimensional Cu-II coordination polymer [Cu(PF6)(2)(bpetha)(2)](n) (1), with weak and flexible Cu-PF6 parts. 1 shows the property of highly selective adsorption for CO2 and C2H2 gases, which interact with the F atoms of the polar Cu-PF6 parts. Crystallographic characterization of [Cu(PF6)(2)(4-mepy)(4)] (2) with a basic [Cu(PF6)(2)(pyridine)(4)] structure indicates that 2 forms weak Cu-PF6 bonds at its axial sites and the polarity of the surface in 2 is higher than that in alpha-[Ni(NCS)(2)(4-mepy)(4)]. The axial ligand-exchanged frameworks, [Cu(PF6)(1.4)(BF4)(0.6)(bpetha)(2)](n) (3) and {[Cu(bpetha)(2)(DMF)(2)]center dot 2PF(6)}(n) (4), enable us to control the onset pressure and maximum adsorption amount for targeted CO2 gases, showing the first case of finely controlled adsorption properties using one-dimensional porous coordination polymers.
  • Shin-ichiro Noro, Susumu Kitagawa, Tomoyuki Akutagawa, Takayoshi Nakamura
    PROGRESS IN POLYMER SCIENCE 34 (3) 240 - 279 0079-6700 2009/03 [Not refereed][Not invited]
    The chemistry of coordination polymers has been extensively advanced in recent decades, producing various architectures that are rationally constructed from a variety of molecular building blocks and interactions between them. Researchers have worked to create a diverse range of coordination frameworks and have raised the structural chemistry to a mature level. The next challenge is to explore their chemical and physical functionalities, which are associated with the microporous properties of frameworks. This review focuses on crystal structures and microporous properties of coordination polymers containing organic N-containing heterocyclic molecules as bridging ligands. (C) 2008 Elsevier Ltd. All rights reserved.
  • Tomoyuki Akutagawa, Hiroyuki Koshinaka, Daisuke Sato, Sadamu Takeda, Shin-ichiro Noro, Hiroyuki Takahasi, Reiji Kumai, Yoshinori Tokura, Takayoshi Nakamura
    Nature Materials 8 342 - 347 2009/02 [Refereed][Not invited]
  • Kobayashi A, Fukuzawa Y, Noro S.-I, Nakamura T, Kato M
    Chemistry Letters 38 (10) 998 - 999 0366-7022 2009 [Refereed][Not invited]
  • Toru Endo, Tomoyuki Akutagawa, Teppei Kajiwara, Keiko Kakiuchi, Yoko Tatewaki, Shin-ichiro Noro, Takayoshi Nakamura
    Bulletin of the Chemical Society of Japan 82 968 - 974 2009 [Refereed][Not invited]
  • Tomoyuki Akutagawa, Daisuke Sato, Qiong Ye, Shin-ichiro Noro, Takayoshi Nakamura
    Dalton Transactions 39 2191 - 2193 2009 [Refereed][Not invited]
  • Tomoyuki Akutagawa, Kozo Shitagami, Masaki Aonuma, Shin-ichiro Noro, Takayoshi Nakamura
    Inorganic Chemistry 48 4454 - 4461 2009 [Refereed][Not invited]
  • Hiroyuki Imai, Tomoyuki Akutagawa, Fumito Kudo, Mitsuhiro Ito, Kazuhiro Toyoda, Shin-ichiro Noro, Leroy Cronin, Takayoshi Nakamura
    Journal of the American Chemical Society 131 13578 - 13579 2009 [Refereed][Not invited]
  • Shin-ichiro Noro, Ryo Tsunashima, Yuichi Kamiya, Kazuhiro Uemura, Hidetoshi Kita, Leroy Cronin, Tomoyuki Akutagawa, Takayoshi Nakamura
    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 48 (46) 8703 - 8706 1433-7851 2009 [Not refereed][Not invited]
  • Tsunashima Ryo, Noda Yuki, Tatewaki Yoko, Noro Shin-ichiro, Akutagawa Tomoyuki, Nakamura Takayoshi, Matsumoto Takuya, Kawai Tomoji
    APPLIED PHYSICS LETTERS 93 (17) 0003-6951 2008/10/27 [Refereed][Not invited]
  • Shin-ichiro Noro, Taishi Takenobu, Yoshihiro Iwasa, Ho-Chol Chang, Susumu Kitagawa, Tomoyuki Akutagawa, Takayoshi Nakamura
    ADVANCED MATERIALS 20 (18) 3399 - + 0935-9648 2008/09 [Not refereed][Not invited]
    High and balanced mobilities: Metal-organic thin-film transistors (MOTFTs) that employ metal complexes with narrow band gaps and less pi-conjugated structures are fabricated. These devices show high-performance ambipolar characteristics in comparison with other reported single-component ambipolar TFTs.
  • Shin-ichiro Noro, Nobuhiro Yanai, Susumu Kitagawa, Tomoyuki Akutagawa, Takayoshi Nakamura
    INORGANIC CHEMISTRY 47 (16) 7360 - 7365 0020-1669 2008/08 [Not refereed][Not invited]
    The solvatochromic indicator [Cu(acac)(tmen)(H2O)] center dot PF6 (1 center dot H2O) has been synthesized and crystallographically characterized. 1 center dot H2O binds an H2O molecule at the Cu(II) axial site, while the PF6- anion is coordination free. The binding properties of [Cu(PF6)(acac)(tmen)] (1) and [Cu(BF4)(acac)(tmen)] (2) have been investigated in solution and the solid state. The donor number of the PF6- anion (DNPF6) was determined from the UV-vis spectra of 1 in 1,2-dichloroethane. The value of DNPF6 of the PF6- anion is slightly larger than that of the tetraphenylborate anion (BPh4-), which is known as a noncoordinating anion. In the solid state, 1 and 2 reversibly bind and release H2O molecules at the Cu(II) axial sites. The coordinated H2O molecules in 2 are more easily removed than those in 1 because of the strong Lewis basicity of the BF4- anion compared to the PF6- ion. The lower melting point of 1 versus 2 is attributed to the loose binding of the PF6- anions to the Cu(II) centers, which induces the dynamic nature of the crystal.
  • Akutagawa Tomoyuki, Sato Daisuke, Koshinaka Hiroyuki, Aonuma Masaaki, Noro Shin-ichiro, Takeda Sadamu, Nakamura Takayoshi
    INORGANIC CHEMISTRY 47 (13) 5951 - 5962 0020-1669 2008/07/07 [Refereed][Not invited]
  • Akutagawa Tomoyuki, Endo Daigoro, Kudo Fumito, Noro Shin-ichiro, Takeda Sadamu, Cronin Leroy, Nakamura Takayoshi
    CRYSTAL GROWTH & DESIGN 8 (3) 812 - 816 1528-7483 2008/03 [Refereed][Not invited]
  • Ryo Tsunashima, Yuki Noda, Yoko Tatewaki, Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura, Takuya Matsumoto, Tomoji Kawai
    Appl. Phy. Lett. 93 (17) 173102  0003-6951 2008 [Refereed][Not invited]
  • Akutagawa Tomoyuki, Jin Reina, Tunashima Ryo, Noro Shin-ichiro, Cronin Leroy, Nakamura Takayoshi
    LANGMUIR 24 (1) 231 - 238 0743-7463 2008/01/01 [Refereed][Not invited]
  • Tsunashima Ryo, Noro Shin-ichiro, Akutagawa Tomoyuki, Nakamura Takayoshi, Kawakami Hiroko, Toma Kazunori
    CHEMISTRY-A EUROPEAN JOURNAL 14 (27) 8169 - 8176 0947-6539 2008 [Refereed][Not invited]
  • Tatewaki Yoko, Noda Yuki, Akutagawa Tomoyuki, Tunashima Ryo, Noro Shin-ichiro, Nakamura Takayoshi, Hasegawa Hiroyuki, Mashiko Shinro, Becher Jan
    JOURNAL OF PHYSICAL CHEMISTRY C 111 (51) 18871 - 18877 1932-7447 2007/12/27 [Refereed][Not invited]
  • Akutagawa Tomoyuki, Endo Daigoro, Noro Shin-Ichiro, Cronin Leroy, Nakamura Takayoshi
    COORDINATION CHEMISTRY REVIEWS 251 (21-24) 2547 - 2561 0010-8545 2007/11 [Refereed][Not invited]
  • X. M. Ren, S. Nishihara, S. Noro, T. Akutagawa, T. Nakamura
    POLYHEDRON 26 (9-11) 1787 - 1792 0277-5387 2007/06 [Refereed][Not invited]
    Two new H-bonding molecular magnets based on [Ni(mnt)(2)](-) monoanion have been synthesized and characterized structurally. In crystal of 1, [Ni(mnt)(2)](-) monoanions form the pi-stacked sheets and the neighboring anionic sheets are held together via H-bonding interactions between -NH groups of diprotonated benzene-1,4-diamine and CN groups of mnt(2-) ligands. In crystal of 2, the neighboring anionic dimers form an anionic column via Ni... S contacting interactions, and these anionic stacks arrange into a sheet which is parallel to crystallographic ab-plane. The H-bonding interactions between diprotonated 1,4-diazabicyclo[2.2.2]octane cations and [Ni(mnt)(2)](-) monoanions as well as between cations and solvent MeCN molecules stabilize the lattice. Magnetic susceptibility measurement for 1 indicates an activated magnetic behavior in the high-temperature range together with a Curie tail at the lower temperature range, but the magnetic feature deviates from the magnetic exchange model for a spin dimer with S = 1/2. The magnetic nature of 2 reveals the presence of strongly antiferromagnetic interactions between the nearest-neighboring spins, the larger energy gap between spin ground and excited states results in a weakly paramagnetic property. (c) 2006 Published by Elsevier Ltd.
  • Shin-ichiro Noro, Tomoyuki Akutagawa, Takayoshi Nakamura
    CRYSTAL GROWTH & DESIGN 7 (6) 1205 - 1208 1528-7483 2007/06 [Not refereed][Not invited]
    The nickel 1,3,5-benzenetricarboxylate (1,3,5-btc(3-)) coordination polymer, [Ni-6(mu-OH2)(4)(1,3,5-btc)(4)(H2O)(12)](n) (1), has been synthesized using a hydrothermal reaction. Trinuclear nickel cores constructed from the mu-OH2 and carboxylate bridges are linked by the 1,3,5-btc(3-) ligands, forming a two-dimensional network. The mu-OH2 molecules form strong hydrogen bonds with the free oxygens of the carboxylate groups in the trinuclear clusters. A structural phase transition occurs around 373 K and is categorized as a second-order phase transition.
  • Ren X. M, Nishihara S, Akutagawa T, Noro S, Nakamura T, Fujita W, Awaga K
    CHEMICAL PHYSICS LETTERS 439 (4-6) 318 - 322 0009-2614 2007/05/11 [Refereed][Not invited]
  • Sato Daisuke, Akutagawa Tomoyuki, Takeda Sadamu, Noro Shin-ichiro, Nakamura Takayoshi
    INORGANIC CHEMISTRY 46 (2) 363 - 365 0020-1669 2007/01/22 [Refereed][Not invited]
  • Tsunashima Ryo, Noro Shin-ichiro, Akutagawa Tomoyuki, Nakamura Takayoshi, Karasawa Tomohiro, Kawakami Hiroko, Toma Kazunori
    JOURNAL OF PHYSICAL CHEMISTRY C 111 (2) 901 - 907 1932-7447 2007/01/18 [Refereed][Not invited]
  • Nishihara Sadafumi, Akutagawa Tomoyuki, Sato Daisuke, Takeda Sadamu, Noro Shin-ichiro, Nakamura Takayoshi
    CHEMISTRY-AN ASIAN JOURNAL 2 (9) 1083 - 1090 1861-4728 2007 [Refereed][Not invited]
  • Shin-ichiro Noro, Satoshi Horike, Daisuke Tanaka, Susumu Kitagawa, Tomoyuki Akutagawa, Takayoshi Nakamura
    INORGANIC CHEMISTRY 45 (23) 9290 - 9300 0020-1669 2006/11 [Not refereed][Not invited]
    A series of guest-binding Cu-parallel to coordination polymers, {[Cu(bpetha)(2)(acetone)(2)]center dot 2PF(6)}(n) (bpetha = 1,2-bis(4-pyridyl)ethane) (1), {[Cu(bpetha)(2)(DMF)(2)]center dot 2PF(6)}(n) (2), {[Cu(bpetha)(2)(MeCN)(2)]center dot 2PF(6)center dot 2MeCN}(n) (3), {[Cu(bpetha)(2)(H2O)(2)]center dot 2PF(6)center dot 3THF center dot 2H(2)O}(n) (4), {[Cu(bpetha)(2)(H2O)(2)]center dot 2PF(6)center dot 3dioxane}(n) (5), and {[Cu(bpetha)(2)(H2O)(2)]center dot 2PF(6)center dot 2-PrOH center dot 2H(2)O}(n) ( 6), have been synthesized and crystallographically characterized. Their framework stabilities and guest-exchange properties have also been investigated. All compounds form a similar framework motif, a "double chain", in which the bpetha ligands bridge Cu-parallel to centers to form 1-D [Cu(bpetha)(2)](n) double chains. A variety of Lewis base guest molecules, such as H2O, acetone, DMF, MeCN, THF, dioxane, and 2-PrOH, are incorporated into the assembly of the 1-D double chains. These chains flexibly change their forms of assembly in a guest-dependent manner. Interestingly, acetone, DMF, and MeCN guests with a carbonyl or cyanide group coordinate directly to the axial sites of the Cu-parallel to centers; in contrast, THF, dioxane, and 2-PrOH guests with an ether or alcohol group are incorporated into the frameworks not via coordination bonds but via weak interactions (hydrogen bonds and van der Waals forces). This selectivity is probably due to steric effects at coordinated oxygen or nitrogen atoms of the guests. Crystal-to-crystal transformations triggered by guests are observed, during which guests coordinated to the Cu-parallel to axial sites are readily removed and replaced by other guests.
  • Akutagawa Tomoyuki, Endo Daigoro, Imai Hiroyuki, Noro Shin-ichiro, Cronin Leroy, Nakamura Takayoshi
    INORGANIC CHEMISTRY 45 (21) 8628 - 8637 0020-1669 2006/10/16 [Refereed][Not invited]
  • Shin-ichiro Noro, Ryo Kitaura, Susumu Kitagawa, Tomoyuki Akutagawa, Takayoshi Nakamura
    INORGANIC CHEMISTRY 45 (22) 8990 - 8997 0020-1669 2006/10 [Not refereed][Not invited]
    Ni(II) coordination polymers with a 4,4 '-azobis(pyridine) (azpy) ligand, {[Ni(2)(NCX)(4)(azpy)(4)]center dot G}(n) (X = S, G (guest molecule) = MeOH (1 center dot MeOH); X = S, G = EtOH (1 center dot EtOH); X = S, G = H(2)O (1 center dot H(2)O); X = S, G = no guest (1); X = Se, G = MeOH (2 center dot MeOH); X = Se, G = H(2)O (2 center dot H(2)O); X = Se, G = no guest ( 2)), have been synthesized and structurally characterized with their porosity. These compounds have one-dimensional periodic ultramicropores that contain the small guest molecules, H(2)O, MeOH, or EtOH, whose hydroxy groups interact with the S or Se atoms of isothiocyanate or isoselenocyanate, respectively, via-S(Se)center dot center dot center dot HO-hydrogen bonds. Although the molecular dimensions of the MeOH guest are considerably larger than the window size of the ultramicropore, 1, MeOH and 2, MeOH easily release their guest molecules without decomposition of the framework to form 1 and 2 without any guest molecules. This shows that 1 and 2 have dynamic ultramicropores constructed from the interpenetrating framework. The guest desorption experiments using 1 center dot MeOH and 1 center dot EtOH reveal that the difference in the desorption behavior is due to van der Waals interactions that depend on the molecular shape of the guest molecule in the ultramicropores and/or an entrance blocking effect that depends on the minimum dimensions of the guest molecule for the pore windows. A marked difference in the N(2) and CH(4) adsorption isotherms was observed and is associated with the strength of the host-guest interaction.
  • Ren, XM, Akutagawa, T, Noro, S, Nishihara, S, Nakamura, T, Yoshida, Y, Inoue, K
    JOURNAL OF PHYSICAL CHEMISTRY B AMER CHEMICAL SOC 110 (15) 7671 - 7677 1520-6106 2006/04/20 [Refereed][Not invited]
    A nonmagnetic Compound, [NO(2)BzPy][Au(mnt)(2)](NO(2)BzPy(+) = 1-(4'-nitrobenzyl)pyridinium; mnt(2-) = maleonitriledithiolate), was synthesized and characterized structurally, which is isostructural with [NO(2)BzPy][Ni(mnt)(2)] that is a quasi-one-dimensional magnet and possesses a spin-Peierls-like transition with J = 192 K in the gapless state and spin energy gap 738 K in the dimerization state, respectively. Further, ten nonmagnetic impurity doped compounds with a formula [NO(2)BzPy][Au(x)Ni(1-x)(mnt)(2)] (x = 0.01-0.73) were prepared and investigated by crystal structural determinations and magnetic susceptibility measurements. The nonmagnetic doping causes the suppression of the spin transition with an average rate of 221(12) K/percentage of dopant concentration. From the plots of chi(m)-T, the transition collapse (the characteristic of the transition is the sudden drop of upon cooling, and the disappearance of this characteristic is considered as the criterion for the transition collapse) is estimated at around x > 0.27. In heavier doped system x = 0.49, the spin gap vanishes and a gapless phase is achieved again.
  • Ren XM, Nishihara S, Akutagawa T, Noro S, Nakamura T, Fujita W, Awaga K
    CHEMICAL PHYSICS LETTERS 418 (4-6) 423 - 427 0009-2614 2006/02/06 [Refereed][Not invited]
  • S Kitagawa, S Noro, T Nakamura
    CHEMICAL COMMUNICATIONS (7) 701 - 707 1359-7345 2006/02 [Not refereed][Not invited]
    Pore surface control of microporous coordination polymers is of great interest due to the potentially exciting functionalities it presents, such as highly selective separation, chemisorption, and novel catalysts and sensors. A discussion of our unique strategy aimed at surface engineering using metalloligands, i.e., introduction of coordinatively unsaturated metal centers, is presented.
  • Ren XM, Nishihara S, Akutagawa T, Noro S, Nakamura T, Fujita W, Awaga K, Ni ZP, Xie JL, Meng QJ, Kremer RK
    DALTON TRANSACTIONS (16) 1988 - 1994 1477-9226 2006 [Refereed][Not invited]
  • T Akutagawa, K Matsuura, S Nishihara, S Noro, T Nakamura
    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (16) 3271 - 3276 1434-1948 2005/08 [Not refereed][Not invited]
  • S Noro, HC Chang, T Takenobu, Y Murayama, T Kanbara, T Aoyama, T Sassa, T Wada, D Tanaka, S Kitagawa, Y Iwasa, T Akutagawa, T Nakamura
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 127 (28) 10012 - 10013 0002-7863 2005/07 [Not refereed][Not invited]
  • S Noro, S Kitagawa, T Nakamura, T Wada
    INORGANIC CHEMISTRY 44 (11) 3960 - 3971 0020-1669 2005/05 [Not refereed][Not invited]
    Coordination compounds with a 4,4'-azobis(pyridine) (azpy) ligand, {[M(2)(azpy)(6)(H(2)O)(5)](.)4PF(6)(.)azpy-H(2)O}(n) (M = Ni(II), (1) or Co(II) (2)) (0-dimensional (0-D) dimer), {[Zn(azpy)(3)(H(2)O)(2)](.)2PF(6)(.)2azpy-4H(2)O}(n) (3) (1-dimensional (1-D) fishbone-type chain), {[Ag(azpy)](.)PF(6)}(4) (1-D linear chain), {[Mn(NCS)(2)(azpy)(2)](.)azpy}, (5) (2-dimensional (2-D) grid sheet), and {[Ni(NCS)(2)(azpy)(2)](.)3toluene}, (6) (2-D grid sheet), were synthesized and structurally characterized. Compounds 1 and 2 have a 0-D dimer motif, in which one M(II) (M(II) = N(II) or Co(II)) coordination site is shared by unidentate azpy and H(2)O ligands, each with half-occupancy, i.e., exhibiting static disorder. Compounds 3 and 4 afford 1-D fishbone-type and 1-D linear chain motifs, respectively. Azpy mediates pi-pi and pi-p interactions between these low-dimensional structures. Compounds 5 and 6 possess a 2-D grid sheet motif. These sheets assemble to form microporous frameworks that incorporate aromatic guests, such as coordination-free azpy (5) and toluene (6), There exist not only pi-pi and pi-p interactions but also CH-pi interactions between the framework azpy ligands and guests. It should be noted that the azpy ligand is a good candidate for the construction of new assembling systems of coordination compounds through its aromatic interactions.
  • T Akutagawa, K Kakiuchi, T Hasegawa, S Noro, T Nakamura, H Hasegawa, S Mashiko, J Becher
    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 44 (44) 7283 - 7287 1433-7851 2005 [Not refereed][Not invited]
  • S Noro, S Kitagawa, T Wada
    INORGANICA CHIMICA ACTA 358 (2) 423 - 428 0020-1693 2005/01 [Not refereed][Not invited]
    New hydrogen-bonding assemblies were synthesized from the reaction of a metalloligand, [Cu(2,4-pydca)(2)](2-) (L-Cu) (2,4-pydca = 2,4-pyridinedicarboxylate), with a Fe-II ion or an imidazole in an aqueous medium and crystallographically characterized. The obtained compounds, [Fe(H2O)(6)][Cu(2,4-pydca)(2)] (1) and [Cu(2,4-pydca)(imidazole)(2)] (.) 2H(2)O (2), have metalloligand dimer units, [Cu-2(2,4-pydca)(4)](4-) and [Cu-2(2,4-pydca)(2)(imidazole)(4)], respectively, each of which assembles by pi-pi (1) and hydrogen-bonding (2) interactions to form 1-D metalloligand arrays. The I-D metalloligand arrays are linked by rich hydrogen-bonding interactions via H2O molecules. (C) 2004 Elsevier B.V. All rights reserved.
  • S Noro, H Miyasaka, S Kitagawa, T Wada, T Okubo, M Yamashita, T Mitani
    INORGANIC CHEMISTRY 44 (1) 133 - 146 0020-1669 2005/01 [Not refereed][Not invited]
    By utilizing the novel metalloligand L(Cu) [Cu(2,4-pydca)(2)](2-) (2,4-pydca (2-) = pyridine-2,4-dicarboxylate), which possesses two kinds of coordination groups, selective bond formation with the series of the first-period transition metal ions (Mn(II), Fe(II), Co(II), Cu(II), and Zn(II)) has been accomplished. Depending on the coordination mode of 4-carboxylate with Co(II), Cu(II), and Zn(II) ions, L(Cu) forms a one-dimensional (1-D) assembly with a repeating motif of [-M-O(2)C-(py)N-Cu-N(py)-CO(2)-]: {[ZnL(Cu)(H(2)O)(3)(DMF)](.)DMF}(n) (2), [ZnL(Cu)(H(2)O)(2)(MeOH)(2)](n) (3), and {[ML(Cu)(H(2)O)(4)](.)2H(2)O}(n) (M = Co (4), Cu (5), Zn (6)). The use of a terminal ligand of 2,2'-bipyridine (2,2'-bpy), in addition to the Cu(II) ion, gives a zigzag 1-D assembly with the similar repeating unit as 4-6: {[Cu(2,2'-bpy)L(Cu)](.)3H(2)O}(n) (9). On the other hand, for Mn(II) and Fe(II) ions, L(Cu) shows a 2-carboxylate bridging mode to form an another 1-D assembly with a repeating motif of [-M-O-C-O-Cu-O-C-O-]: [ML(Cu)(H(2)O)(4)](n) (M = Mn (7), Fe (8)). This selectivity is related to the strength of Lewis basicity and the electrostatic effect of L(Cu) and the Irving-Williams order on the present metal ions. According to their bridging modes, a variety of magnetic properties are obtained: 4, 5, and 9, which have the 4-carboxypyridinate bridge between magnetic centers, have weak antiferromagnetic interaction, whereas 7 and 8 with the carboxylate bridge between magnetic centers reveal 1-D ferromagnetic behavior (Cu(II)-M(II); M(II) = Mn(II), J/k(B) = 0.69 K for 7; M(II) = Fe(II), J/k(B) = 0.71 K for 8).
  • R Kitaura, G Onoyama, H Sakamoto, R Matsuda, S Noro, S Kitagawa
    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION WILEY-V C H VERLAG GMBH 43 (20) 1433-7851 2004 [Not refereed][Not invited]
  • S Kitagawa, R Kitaura, S Noro
    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION WILEY-V C H VERLAG GMBH 43 (18) 1433-7851 2004 [Not refereed][Not invited]
  • S Noro, S Kitagawa, M Yamashita, T Wada
    CRYSTENGCOMM 4 162 - 164 1466-8033 2002/06 [Not refereed][Not invited]
    By employing a metalloligand {[Cu(2,4-pydca)(2)(H2O)].2Et(3)NH} (2,4-pydca = 2,4-pyridinedicarboxylate) (1), a novel 2-D coordination polymer (ZnCu(2,4-pydca)(2)(H2O)(2)(MeOH)(2)](n) (3) was synthesized, in which 1-D linear chains consisting of 1 and Zn(n) ions are linked by weak coordination and hydrogen bonds to forma 2-D network.
  • S Noro, R Kitaura, M Kondo, S Kitagawa, T Ishii, H Matsuzaka, M Yamashita
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY AMER CHEMICAL SOC 124 (11) 0002-7863 2002/03 [Not refereed][Not invited]
  • S Noro, S Kitagawa
    NANOPOROUS MATERIALS III 141 363 - 370 0167-2991 2002 [Not refereed][Not invited]
    In this manuscript, we report in syntheses, crystal structures, and porous functionalities of novel coordination polymers, {[Cu(TiF(6))(4,4'-bpy)(2)].xH(2)O}n (3a.xH(2)O) (3-D Regular Grid) and {[Cu(4,4'-bpy)(2)(H(2)O)(2)].TiF(6)}(n) (3b) (2-D Interpenetration), which show unprecedented dynamic structural transformation responding to guest molecules.
  • R Kitaura, K Fujimoto, S Noro, M Kondo, S Kitagawa
    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION WILEY-V C H VERLAG GMBH 41 (1) 1433-7851 2002 [Not refereed][Not invited]
  • S Noro, S Kitagawa, M Yamashita, T Wada
    CHEMICAL COMMUNICATIONS ROYAL SOC CHEMISTRY (3) 1359-7345 2002 [Not refereed][Not invited]
  • "New Porous Coordination Polymer with High Methane Adsorpbion Capacity"
    S. Noro, S. Kitagawa, M. Kondo, K. Seki
    Angew. Chem. Int. Engl,, 39 2082 - 2084 2000/07 [Refereed][Not invited]
  • M Kondo, M Shimamura, S Noro, S Minakoshi, A Asami, K Seki, S Kitagawa
    CHEMISTRY OF MATERIALS AMER CHEMICAL SOC 12 (5) 0897-4756 2000/05 [Not refereed][Not invited]
  • Shin-Ichiro Noro, Mitsuru Kondo, Susumu Kitagawa, Tomohiko Ishii, Hiroyuki Matsuzaka, Masahiro Yamashita
    Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals 342 231 - 236 1058-725X 2000 [Refereed][Not invited]
    Synthesis and characterization of novel coordination polymer, [Cu(salapy)2]n (Hsalapy = N-salicylidene-3-aminopyridine), having the 2-D thick layer structure is reported.
  • S Noro, S Kitagawa, M Kondo, K Seki
    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION WILEY-V C H VERLAG GMBH 39 (12) 1433-7851 2000 [Not refereed][Not invited]
  • M. Kondo, M. Shimamura, S. Noro, Y. Kimura, K. Uemura, S. Kitagawa
    J. Solid State Chem. 152 (1) 113 - 119 0022-4596 2000 [Refereed][Not invited]
  • S Noro, M Kondo, S Kitagawa, T Ishii, H Matsuzaka
    CHEMISTRY LETTERS (8) 727 - 728 0366-7022 1999/08 [Refereed][Not invited]
    A new sulfate-bridged coordination polymer, {(4,4'-bpyH(2))[Fe-3(4,4'-bpy)(3)(SO4)(4)(H2O)(6)]. 10H(2)O}(n), was synthesized and crystallographically characterized. This complex shows a novel three-dimensional (3-D) log-cabin type structure constructed from one-dimensional (1-D) [Fe(4,4'-bpy)(H2O)(2)](n) cationic chain, free protonated 4,4'-bpy, and sulfate dianion. This structure shows channel-like cavities with dimensions of about 3 Angstrom x 4 Angstrom.
  • S Noro, M Kondo, T Ishii, S Kitagawa, H Matsuzaka
    JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS (10) 1569 - 1574 0300-9246 1999/05 [Refereed][Not invited]
    New iron(Ir) co-ordination polymers, {[Fe(azpy)(NCS)(2)(MeOH)(2)]. azpy}(n) 1 (azpy = 4,4'-azopyridine), {[Fe(4,4'-bpy)(NCs)(2)(H2O)(2)]. 4,4'-bpy}(n) 2 (4,4'-bpy = 4,4'-bipyridine) and {[Fe(azpy)(2)(NCS)(2)]. 3H(2)O}(n) 3 have been synthesized and characterized. The crystal structures of both compounds 1 and 2 contain two types of bridging ligands; one is of the co-ordination bond type, directly bridging iron centers to form a one-dimensional chain of [Fe(L)] (L = azpy or 4,4'-bpy), while the other links these chains by hydrogen bonds between the pyridine nitrogen atoms and coordinated methanol or water molecules, resulting in a grid sheet. Each sheet shows non-interpenetration because of incorporation of NCS anion in the grid. Cyclic voltammograms of 1 and 3 demonstrate that the directly bridging azpy ligands show no apparent redox activity, whereas a reversible redox wave observed for 1 is attributed to the hydrogen-bonding supported azpy. Magnetic susceptibilities measured from 1.9 to 300 K are indicative of no appreciable magnetic exchange interaction between the adjacent metal ions.
  • M Kondo, A Asami, K Fujimoto, S Noro, S Kitagawa, T Ishii, H Matsuzaka
    INTERNATIONAL JOURNAL OF INORGANIC MATERIALS 1 (1) 73 - 75 1466-6049 1999/04 [Not refereed][Not invited]
    The new cadmium(II) coordination polymer [Cd-2(bpob)(3)(NO3)(4)](n) (bpob = 1,4-bis(4-pyridoxy)benzene) has been synthesized and structurally characterized. Each Cd(II) center, which has "T-shaped" pentagonal pyramidal geometry, is linked by bpob to provide a two-dimensional network. When the cis- and trans-isomers are defined for the bpob ligand, the layer network is made up of the zig-zag chains of [Cd(cis-bpob)] and trans-bpob ligand, which connects these chains. As a result, a sort of brick-wall type two-dimensional structure is constructed. (C) 1999 Elsevier Science Ltd. All rights reserved.
  • Mitsuru Kondo, Mariko Shimamura, Shin-Ichiro Noro, Tomomichi Yoshitomi, Seika Minakoshi, Susumu Kitagawa
    Chemistry Letters (4) 285 - 286 0366-7022 1999 [Refereed][Not invited]
    Three zinc(II) coordination polymers, [Zn(4,4′-bpy)(NCS)2]n (4,4′-bpy = 4,4′-bipyridine 1), ([Zn(4,4′-bpy)(SO4)(H2O),]·3H2O}n (2), and {[Zn2(azpy)2(SO4)2(H2O)3]·0.5(azpy)}n (azpy = 4,4′-azopyridine 3) have been synthesized and structurally characterized. 1 and 2 show assembled structure of one-dimensional chains, while 3 has a three-dimensional structure with pillared-layer type network. The important effect of counter anions on the coordination network was studied.
  • M. Kondo, K. Fujimoto, T. Okubo, A. Asami, S. Noro, S. Kitagawa, T. Ishii, H. Matsuzaka
    Chem. Lett. 291 - 292 1999 [Refereed][Not invited]
  • M Kondo, T Okubo, A Asami, S Noro, T Yoshitomi, S Kitagawa, T Ishii, H Matsuzaka, K Seki
    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 38 (1-2) 140 - 143 1433-7851 1999 [Refereed][Not invited]

Books etc

  • The Supramolecular Chemistry of Organic-Inorganic Hybrid Materials
    John Wiley & Sons, Inc. 2010
  • 配位空間の化学-最新技術と応用-
    ㈱シーエムシー出版 2009
  • Comprehensive Coordination Chemistry –II: From Biology to Nanotechnology
    Elsevier 2004


Industrial Property Rights

  • 二酸化炭素吸着剤

Awards & Honors

  • 2012/09 錯体化学会 平成24年度錯体化学会研究奨励賞
    受賞者: 野呂 真一郎
  • 2011/03 日本化学会北海道支部 平成22年度日本化学会北海道支部奨励賞
    受賞者: 野呂 真一郎
  • 2009/03 Royal Society of Chemistry 第3回 PCCP Prize
    受賞者: 野呂 真一郎

Research Grants & Projects

  • 文部科学省:科学研究費補助金(基盤研究(C))
    Date (from‐to) : 2012 -2014 
    Author : 野呂 真一郎
  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(若手研究(B))
    Date (from‐to) : 2010 -2011 
    Author : Shin-ichiro NORO
    Separation of CO_2 gas from gas mixtures has been a significant challenge in terms of environmental and resource issues. While zeolites show considerably higher selectivities, they still suffer from high recovery cost for their regeneration. In this study, high selectivity and low-energy regeneration for adsorption of CO_2 gas were achieved concurrently in a two-dimensional Cu(II) porous coordination polymer containing inorganic fluorinated PF_6^-. anions that act as moderate and selective interaction sites for CO_2 molecules.
  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(若手研究(B))
    Date (from‐to) : 2007 -2008 
    Author : Shin-ichiro NORO
    有機薄膜トランジスタ(organic thin-film transistor (OTFT))は、シリコンを中心とする無機半導体をベースとした既存のトランジスタでは容易に実現できない優れた特徴(分子の多様性・機械的フレキシビリティー・シンプルな作成プロセス・大面積化・低温プロセス・ローコスト)を有するため次世代エレクトロニクス素子として注目されている。特に、論理回路や発光トランジスタへの応用を目指したアンバイポーラーOTFTの開発が近年精力的に行われてきた。しかしながら、p型・n型共に高移動度を示す単一成分アンバイポーラーTFT材料は限られている。優れたアンバイポーラー特性を示す半導体材料の設計指針を得るためには、新規半導体材料の系統的な開発研究が必要不可欠である。このような背景から、本研究ではHOMO 及びLUMO レベルを独立に精密制御できる混合配位子金属錯体を系統的に設計・合成し、大気中で安定にかつ高性能で作動する単一成分アンバイポーラーTFT デバイスの創製を目指した。金属錯体として長鎖アルキル基を導入した金属錯体半導体に着目し、溶融法・スピンコート法による薄膜作製及びTFT 特性について検討を行った。その結果、Pt イオンに長鎖アルキル基がついたビピリジン配位子及びo- キノン配位子が配位した金属錯体のスピンコート膜を用いたボトムコンタクト型デバイスにおいてP 型の半導体特性が観測され、その移動度は1.9 x 10-6 cm2/Vs であった。溶融膜は非常に膜質が悪かったが、スピンコート法を適用することよって膜質を向上させることに成功した。
  • 文部科学省:科学研究費補助金(特定領域研究)
    Date (from‐to) : 2006 -2007 
    Author : 野呂 真一郎
    有機薄膜トランジスタ(organic thin-film transistor(OTFT))は、シリコンを中心とする無機半導体をベースとした既存のトランジスタでは容易に実現できない優れた特徴(分子の多様性・機械的フレキシビリティー・シンプルな作成プロセス・大面積化・低温プロセス・ローコスト)を有するため次世代エレクトロニクス素子として注目されている。本研究では、高性能TFT特性(高移動度、アンバイポーラー特性)を示す分子性金属錯体半導体の探索及び長鎖アルキル・アルコキシル基導入に伴う(1)湿式及び溶融法による低環境負荷型TFTデバイスの作製及びその特性評価(2)多極小ポテンシャルを利用したTFTデバイスと熱相転移誘起スイッチングの複合機能材料の構築に関して検討を行った。その結果、以下のような成果を得た。(1)酸化還元両性配位子であるο-セミキノネートが配位した中性金属錯体が、ホール・電子共にバランスの取れた高移動度を示すことを証明した。観測された移動度は、過去に報告されている単一成分アンバイポーラー特性を示す半導体と比較してトップレベルの値を示した。(2)長鎖アルキル基を導入した金属錯体半導体のTFT特性について検討を行った。Ptイオンに長鎖アルキル基がついたビピリジン配位子及びο-キノン配位子が配位した金属錯体のアルキル鎖長依存性について検討を行った結果、C_<13>H_<27>の置換基を持った錯体ではp型の半導体特性が観測されたのに対し、C_9H_<19>の置換基を持った錯体ではTFT特性が全く観測されなかった。原因として、鎖長が短くなることによる薄膜構造の不安定化が示唆された。
  • 文部科学省:科学研究費補助金(若手研究(B))
    Date (from‐to) : 2005 -2006 
    Author : 野呂 真一郎
    有機薄膜トランジスタ(organic thin-film transistor(OTFT))は、シリコンを中心とする無機半導体をベースとした既存のトランジスタでは容易に実現できない優れた特徴(分子の多様性・機械的フレキシビリティー・シンプルな作成プロセス・大面積化・低温プロセス・ローコスト)を有するため次世代エレクトロニクス素子として注目されている。特に、論理回路や発光トランジスタへの応用を目指したアンバイポーラーOTFTの開発が近年精力的に行われてきた。しかしながら、p型・n型共に高移動度を示す単一成分アンバイポーラーTFT材料は限られている。優れたアンバイポーラー特性を示す半導体材料の設計指針を得るためには、新規半導体材料の系統的な開発研究が必要不可欠である。このような背景から、本研究ではこれまで報告例がほとんど無いラジカルジイミノベンゾセミキノネート配位子が配位した金属錯体をTFTデバイスの半導体材料として利用した。この錯体は、ラジカル配位子の酸化還元両性機能に由来した狭いバンドギャップ(〜0.8eV)を有するため、アンバイポーラー特性の発現が期待できる。デバイス構造の最適化を行った結果、絶縁層としてPMMA、ソース・ドレイン電極としてCaを用いたトップコンタクト型デバイスにおいてホール・電子両キャリアの注入・蓄積・輸送が起こるアンバイポーラーTFTの構築に成功した。その移動度はホールにおいて約10^<-3>cm^2/Vs、電子において約10^<-2>cm^2/Vsと非常に高い値を示し、本錯体が半導体材料として有用であることが証明された。
  • Structures and Properties of Thin Films of Metal Complex Semiconductors
    Date (from‐to) : 2000
  • Construction of Porous Metal Complexes
    Date (from‐to) : 1996

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