Well-controlled synthesis of biodegradable polyesters using edible catalysts
Toshiki Miwa, Ryota Suzuki, Tianle Gao, Takuya Yamamoto, Feng Li, Takuya Isono, Toshifumi Satoh
Green Chemistry, Royal Society of Chemistry (RSC), 2026
Scientific journal, Edible catalysts, including organic acids and their sodium or potassium salts, have been demonstrated to enable the well-controlled synthesis of biodegradable polyesters, which are environmentally friendly and biomedical polymer materials. Image modified using Google Gemini.

Molecular Design of POSS–Oligosaccharide Hybrid Materials for Stabilizing Soft-Matter Quasicrystals and Frank–Kasper Phases
Taiki Nishimura, Chieh-Jen Cheng, Yu Oishi, Ting-Wei Chang, Feng Li, Tianle Gao, Redouane Borsali, Takuya Yamamoto, Kenji Tajima, Hsin-Lung Chen, Toshifumi Satoh, Takuya Isono
Macromolecules, American Chemical Society (ACS), 30 Dec. 2025
Scientific journal

Ultrasonic Formation of Highly Concentrated Aqueous Dispersion of Fullerene–Polymer Nanoparticles by Charge Transfer
Yubo Wang, Sota Arima, Toshihiro Shimada, Hiroshi Hirata, Tianle Gao, Feng Li, Takuya Isono, Kenji Tajima, Toshifumi Satoh, Shin‐ichiro Sato, Takuya Yamamoto
Macromolecular Rapid Communications, Wiley, 29 Dec. 2025
Scientific journal, ABSTRACT

Fullerenes attract much interest due to the potentials to various applications. However, their insolubility in water and some organic solvents often hinders development. Herein, poly(ethylene glycol) (PEG), polyvinylpyrrolidone (PVP), poly(vinyl alcohol) (PVA), polyacrylic acid (PAA), and Pluronic L64 and 17R4, are attempted for dispersing fullerene in water via ultrasonication, and some of these are found to disperse an exceedingly large amount. The maximum concentration of C ₆₀ is achieved with Pluronic L64, being 9.8 g/L (13.6 m m ) without re‐aggregation for a long time. Electron paramagnetic resonance (EPR) spectroscopy shows a significant amount of radical species existing in the fullerene–polymer complexes, which are stable for several weeks. DLS and TEM exhibit the formation of nanoparticles, and NMR, FT‐IR, and MALDI‐TOF MS are used to characterize the fullerene nanoparticles–polymer complexes. The aqueous dispersions of the complexes can be dried and redispersed in water and polar organic solvents. Column chromatographic separation is performed to give unreacted fullerene and fullerene–polymer complexes, the latter of which shows a strong EPR signal. Density functional simulations reveal partial electron transfer from the PEG segment to fullerene, which causes charge separation in the complexes, resulting in the excellent dispersibility in water, while the poly(propylene glycol) (PPG) segment likely assists the complexation by hydrophobic interactions with fullerene.

Mildly Catalyzed Alternating Copolymerization Yields Solution-Processable Fluorinated Polyesters with High Thermal and Surface Performance
Chun-Yao Ke, Ryota Suzuki, Tianle Gao, Feng Li, Takuya Yamamoto, Takuya Isono, Guey-Sheng Liou, Toshifumi Satoh
Macromolecules, 58, 22, 12250, 12263, American Chemical Society (ACS), 17 Nov. 2025
Scientific journal

Ring-opening alternating copolymerization of cyclic anhydrides and isobutylene oxide using organobase catalysts
Moeno Sugiyama, Ryota Suzuki, Hiroto Ayakawa, Tianle Gao, Feng Li, Takuya Yamamoto, Takuya Isono, Toshifumi Satoh
POLYMER JOURNAL, 15 Aug. 2025
English, Scientific journal

Enabling Wholly Aromatic Triphenylamine-Based Polyimides to Realize Bathochromic Emission
Meng-Chang Hou, Yu-Jen Shao, Chin-Hsuan Lin, Peng-Yi Lin, William Sun, Ying-Yi Tsai, Pi-Tai Chou, Tianle Gao, Toshifumi Satoh, Guey-Sheng Liou
ADVANCED OPTICAL MATERIALS, 13, 20, Jul. 2025
English, Scientific journal

Conjugated Polymer Nanoparticles and Thin Films of Defect-Free Cyclic P3HT: Effects of Polymer Topology on the Nanostructure
Tomohisa Watanabe, Masatoshi Maeki, Manabu Tokeshi, Tianle Gao, Feng Li, Takuya Isono, Kenji Tajima, Toshifumi Satoh, Shin-ichiro Sato, Takuya Yamamoto
MOLECULES, 30, 12, 06 Jun. 2025
English, Scientific journal

Unique Complex Structure and Mechanism of Physisorption of Defect-Free Cyclic Poly(ethylene glycol) onto Gold Nanoparticles
Tomohisa Watanabe, Masato Yamasaki, Tsuyoshi Nakai, Bincy Akkoli Pottammal, Yuki Maruyama, Hiroki Iwase, Akiyuki Ryoki, Tianle Gao, Feng Li, Takuya Isono, Kenji Tajima, Toshifumi Satoh, Shin-ichiro Sato, Takuya Yamamoto
LANGMUIR, 41, 22, 13993, 14007, 27 May 2025
English, Scientific journal

Toward Fully Controllable Monomers Sequence: Binary Organocatalyzed Polymerization from Epoxide/Aziridine/Cyclic Anhydride Monomer Mixture
Tianle Gao, Xiaochao Xia, Tomohisa Watanabe, Chun-Yao Ke, Ryota Suzuki, Takuya Yamamoto, Feng Li, Takuya Isono, Toshifumi Satoh
Journal of the American Chemical Society, 146, 36, 25067, 25077, 31 Jul. 2024, [Peer-reviewed]
English, Scientific journal

Synthesis of Amino-Functionalized Polyester via Ring-Opening Alternating Copolymerization of Glycidylamines with Cyclic Anhydrides
Ryota Suzuki, Tianle Gao, Ayaka Sumi, Takuya Yamamoto, Kenji Tajima, Feng Li, Takuya Isono, Toshifumi Satoh
Polymer Chemistry, 15, 33, 3349, 3358, 2024
English, Scientific journal

One-Step Synthesis of Poly(amide ester)-Based Block Copolymers with Defined Phase Separation Behavior
Tianle Gao, Feng Li, Ryota Suzuki, Huan Li, Takuya Yamamoto, Xiaochao Xia, Takuya Isono, Toshifumi Satoh
Macromolecules, 56, 20, 8333, 8343, 24 Oct. 2023
English, Scientific journal

Sequential Polymerization from Complex Monomer Mixtures: Access to Multiblock Copolymers with Adjustable Sequence, Topology, and Gradient Strength
Xiaochao Xia, Tianle Gao, Feng Li, Ryota Suzuki, Takuya Isono, Toshifumi Satoh
Macromolecules, 56, 1, 92, 103, 10 Jan. 2023
Scientific journal

One-step synthesis of sequence-controlled multiblock polymers with up to 11 segments from monomer mixture
Xiaochao Xia, Ryota Suzuki, Tianle Gao, Takuya Isono, Toshifumi Satoh
Nature Communications, 13, 1, Dec. 2022
Scientific journal

Polyether/Polythioether Synthesis via Ring-Opening Polymerization of Epoxides and Episulfides Catalyzed by Alkali Metal Carboxylates
Tianle Gao, Xiaochao Xia, Kenji Tajima, Takuya Yamamoto, Takuya Isono, Toshifumi Satoh
Macromolecules, 55, 21, 9373, 9383, 08 Nov. 2022
Scientific journal

Multidimensional Control of Repeating Unit/Sequence/Topology for One-Step Synthesis of Block Polymers from Monomer Mixtures
Xiaochao Xia, Tianle Gao, Feng Li, Ryota Suzuki, Takuya Isono, Toshifumi Satoh
Journal of the American Chemical Society, 144, 39, 17905, 17915, 05 Oct. 2022
Scientific journal

Synthesis of hyperbranched polyesters via the ring-opening alternating copolymerisation of epoxides with a cyclic anhydride having a carboxyl group
Ryota Suzuki, Xiaochao Xia, Tianle Gao, Takuya Yamamoto, Kenji Tajima, Takuya Isono, Toshifumi Satoh
Polymer Chemistry, 13, 38, 5469, 5477, 26 Aug. 2022
Scientific journal

Engineered ϵ-decalactone lipomers bypass the liver to selectively: In vivo deliver mRNA to the lungs without targeting ligands
Mahmoud M. Abd Elwakil, Tianle Gao, Takuya Isono, Yusuke Sato, Yaser H.A. Elewa, Toshifumi Satoh, Hideyoshi Harashima
Materials Horizons, 8, 8, 2251, 2259, Aug. 2021
Scientific journal

Alkali Metal Carboxylates: Simple, Efficient, and Industrial Relevant Catalysts for Controlled Polymer Synthesis
Feng Li, Ryota Suzuki, Tianle Gao, Xiaochao Xia, Takuya Isono, Toshifumi Satoh, Bulletin of the Chemical Society of Japan, 96, 9, 1003, 1018, 2023
English

精密重合による分解性ポリマーの配列制御　　　　　　　　　　　　　　　
LI Feng, GAO Tianle, 磯野 拓也, 佐藤 敏文
高分子学会 会誌「高分子」, Apr. 2025, [Joint work]

光制御型双性イオン触媒の開発による脂肪族ポリエステルの効率合成　　　　　　　　　　　　　　　
2025年度 研 究 助 成
Apr. 2025 - Apr. 2027
一般財団法人イオン工学振興財団, Principal investigator, PK25250068

モノマー反応性制御触媒に基づく配列完全制御型共重合体合成の極致
科学研究費助成事業
23 Apr. 2024 - 31 Mar. 2026
GAO TIANLE
日本学術振興会, 特別研究員奨励費, 北海道大学, 24KJ0268