Researcher Profile and Settings

Researcher

• Name

  KAKUCHI Ryohei

Affiliation

• Department of Materials and Bioscience, Assistant Professor

ホームページ

• URI

  https://org-polym-chem.chem-bio.st.gunma-u.ac.jp/index.html

Degree

• Ph.D (Engineering)

Association Memberships

• THE SOCIETY OF POLYMER SCIENCE, JAPAN

Research Activities

Research Areas

• Nanotechnology/Materials, Polymer chemistry

Published Papers

• Unveiling α-Etherification Effects on the Aminolysis of α,α-Difluoroacetate Enables the Aminolysis Post-polymerization Modification of α,α-Difluoro-α-(aryloxy)acetate-Containing Polymers, Kakuchi Ryohei, Matsubara Kiho, Fukasawa Kota, Amii Hideki, 2021, Macromolecules, 54, 13, 6204, 6213, Scientific journal

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• Streamlined access to end-functionalized thermoresponsive polymers via a combination of bulk RAFT polymerization and quasi solvent-free Passerini three-component reaction, Hirama Arisa, Chou Li-Chieh, Kakuchi, Ryohei, Nov. 2021, Polymer Journal, 53, 11, 1175, 1185, Scientific journal

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• Computer-Aided Design of Postpolymerization Modification Reaction Based on Aminolysis of α,α-Difluoroacetate Esters., Kakuchi Ryohei, Fukasawa Kota, Kikuchi Moriya, Narumi Atsushi, Kawaguchi Seigou, Li Yao, Kim Hyung, Amii Hideki, 2021, Macromolecules, 54, 1, 364, 372, Scientific journal

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• Fundamental insights into aminolysis postpolymerization modification reaction of polymers featuring α,α-Difluoroacetate Esters, Kakuchi Ryohei, Fukasawa, Kota, Chou Li-Chieh, Kim Hyung, Amii Hideki, Sep. 2021, Polymer, 230, 124058, Scientific journal

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• Polymers of lignin-sourced components as a facile chemical integrant for the Passerini three-component reaction, Kakuchi, R. Tsuji, R. Fukasawa, K. Yamashita, S. Omichi, M. Seko, N., Apr. 2021, Polymer Journal, 53, 4, 523, 531, Scientific journal

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• Rational Optimization of the Petasis Three‐Component Reaction as a Feasible Elementary Reaction in Polymer Chemistry, Takahashi, R.; Kakuchi, R, Jan. 2021, Macromolecular Chemeistry and Physics, 222, 2, 2000347, Scientific journal
• The Passerini three-component reaction of aldehyde end-functionalized polymers via RAFT polymerization using chain transfer agents featuring aldehyde, Ryohei Kakuchi,Yamato Okura, 05 Jun. 2020, Polymer Journal, Scientific journal

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• The dawn of polymer chemistry based on multicomponent reactions, Ryohei Kakuchi, May 2019, Polymer Journal

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• Multicomponent-Reaction-Ready Biomass-Sourced Organic Hybrids Fabricated via the Surface Immobilization of Polymers with Lignin-Based Compounds, Takashi Hamada,Shuhei Yamashita,Masaaki Omichi,Kimio Yoshimura,Yuji Ueki,Noriaki Seko,Ryohei Kakuchi, Mar. 2019, ACS Sustainable Chemistry & Engineering

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• Effect of anion in carboxylate-based ionic liquids on catalytic activity of transesterification with vinyl esters and the solubility of cellulose, 2019, RSC Advances

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• Alkylated alkali lignin for compatibilizing agents of carbon fiber-reinforced plastics with polypropylene, Sakai Hiroki,Kuroda Kosuke,Muroyama Shiori,Tsukegi Takayuki,Kakuchi Ryohei,Takada Kenji,Hata Ayano,Kojima Ryosuke,Ogoshi Tomoki,Omichi Masaaki,Ninomiya Kazuaki,Takahashi Kenji, 2018, Polymer Journal, 50, 3, 281, 284

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• CS2 capture in the ionic liquid 1-alkyl-3-methylimidazolium acetate: reaction mechanism and free energetics, Fangyong Yan,Ryohei Kakuchi,Kenji Takahashi,Hyung J. Kim, 2018, Physical Chemistry Chemical Physics

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• Cellulose triacetate synthesis via one-pot organocatalytic transesterification and delignification of pretreated bagasse, 2018, RSC Advances

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• Multi-component post-polymerization modification reactions of polymers featuring lignin-model compounds, Ryohei Kakuchi,Satoshi Yoshida,Takasuke Sasaki,Shigeyoshi Kanoh,Katsuhiro Maeda, 2018, Polymer Chemistry

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• Recyclable and scalable organocatalytic transesterification of polysaccharides in a mixed solvent of 1-ethyl-3-methylimidazolium acetate and dimethyl sulfoxide, Quy Van Nguyen,Shuhei Nomura,Rina Hoshino,Kazuaki Ninomiya,Kenji Takada,Ryohei Kakuchi,Kenji Takahashi, Nov. 2017, POLYMER JOURNAL, 49, 11, 783, 787, Scientific journal

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• A mechanistic insight into the organocatalytic properties of imidazolium-based ionic liquids and a positive co-solvent effect on cellulose modification reactions in an ionic liquid (vol 7, pg 9423, 2017), Ryohei Kakuchi,Ryo Ito,Shuhei Nomura,Hadi Abroshan,Kazuaki Ninomiya,Tomoyuki Ikai,Katsuhiro Maeda,Hyung J. Kim,Kenji Takahashi, 2017, RSC ADVANCES, 7, 23, 13876, 13876

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• Synthesis of Polymers via Kabachnik-Fields Polycondensation, Fenja Moldenhauer,Ryohei Kakuchi,Patrick Theato, Jan. 2016, ACS MACRO LETTERS, 5, 1, 20, 23, Scientific journal

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• Saccharification and ethanol fermentation from cholinium ionic liquid-pretreated bagasse with a different number of post-pretreatment washings, Kazuaki Ninomiya,Sayuri Omote,Chiaki Ogino,Kosuke Kuroda,Mana Noguchi,Takatsugu Endo,Ryohei Kakuchi,Nobuaki Shimizu,Kenji Takahashi, Aug. 2015, BIORESOURCE TECHNOLOGY, 189, 203, 209, Scientific journal

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• Ionic liquid/ultrasound pretreatment and in situ enzymatic saccharification of bagasse using biocompatible cholinium ionic liquid, Kazuaki Ninomiya,Asami Kohori,Mai Tatsumi,Koji Osawa,Takatsugu Endo,Ryohei Kakuchi,Chiaki Ogino,Nobuaki Shimizu,Kenji Takahashi, Jan. 2015, BIORESOURCE TECHNOLOGY, 176, 169, 174, Scientific journal

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• Efficient and rapid direct transesterification reactions of cellulose with isopropenyl acetate in ionic liquids, Ryohei Kakuchi,Makoto Yamaguchi,Takatsugu Endo,Yoshiki Shibata,Kazuaki Ninomiya,Tomoyuki Ikai,Katsuhiro Maeda,Kenji Takahashi, 2015, RSC ADVANCES, 5, 88, 72071, 72074, Scientific journal

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• Saccharification and ethanol fermentation from cholinium ionic liquid-pretreated bagasse with a different number of post-pretreatment washings, Ninomiya Kazuaki,Omote S,Ogino Chiaki,Kuroda K,Noguchi M,Endo T,Kakuchi R,Shimizu N,Takahashi K, 2015, Bioresourse Technology, 6, 888, Scientific journal
• Activation of Stable Polymeric Esters by Using Organo-Activated Acyl Transfer Reactions, Ryohei Kakuchi,Kwanjira Wongsanoh,Voravee P. Hoven,Patrick Theato, May 2014, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 52, 9, 1353, 1358, Scientific journal

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• Efficient Multicomponent Postpolymerization Modification Based on Kabachnik-Fields Reaction, Ryohei Kakuchi,Patrick Theato, Apr. 2014, ACS MACRO LETTERS, 3, 4, 329, 332, Scientific journal

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• Preparation of Functional Polyamine Scaffolds via Mitsunobu Post-Polymerization Modification Reactions, Ryohei Kakuchi,Patrick Theato, Mar. 2014, MACROMOLECULAR RAPID COMMUNICATIONS, 35, 6, 661, 665, Scientific journal

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• Multicomponent Reactions in Polymer Synthesis, Ryohei Kakuchi, Jan. 2014, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 53, 1, 46, 48

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• Sequential post-polymerization modification reactions of poly(pentafluorophenyl 4-vinylbenzenesulfonate), Ryohei Kakuchi,Patrick Theato, 2014, POLYMER CHEMISTRY, 5, 7, 2320, 2325, Scientific journal

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• Three-Component Reactions for Post-Polymerization Modifications, Ryohei Kakuchi,Patrick Theato, May 2013, ACS MACRO LETTERS, 2, 5, 419, 422, Scientific journal

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• Photocleavable Triblock Copolymers Featuring an Activated Ester Middle Block: "One-Step" Synthesis and Application as Locally Reactive Nanoporous Thin Films, Zhao Hui,Gu Weiyin,Kakuchi Ryohei,Sun Zhiwei,Sterner Elizabeth,Russell Thomas P,Coughlin E. Bryan,Theato Patrick, 2013, Acs Macro Letters, 2, 11, 966, 969

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• Changing the Reactivity of Polymeric Activated Esters by Temperature: On-Off Switching of the Reactivity of Poly(4-acryloxyphenyldimethylsulfonium triflate), Ryohei Kakuchi,Patrick Theato, Feb. 2012, MACROMOLECULES, 45, 3, 1331, 1338, Scientific journal

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• Controlled Positioning of Activated Ester Moieties on Well-Defined Linear Polymer Chains, Ryohei Kakuchi,Mirela Zamfir,Jean-Francois Lutz,Patrick Theato, Jan. 2012, MACROMOLECULAR RAPID COMMUNICATIONS, 33, 1, 54, 60, Scientific journal

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• Synthesis of a novel one-handed helical poly(phenylacetylene) bearing poly(L-lactide) side chains, Chunhong Zhang,Fangbin Liu,Qianqian Geng,Shuang Zhang,Xiande Shen,Ryohei Kakuchi,Hideki Misaka,Toyoji Kakuchi,Toshifumi Satoh,Ryosuke Sakai, Oct. 2011, EUROPEAN POLYMER JOURNAL, 47, 10, 1923, 1930, Scientific journal

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• Efficient Colorimetric Anion Detection Based on Positive Allosteric System of Urea-Functionalized Poly(phenylacetylene) Receptor, Ryosuke Sakai,Shota Okade,Eric B. Barasa,Ryohei Kakuchi,Magdalena Ziabka,Satoshi Umeda,Katsuyuki Tsuda,Toshifumi Satoh,Toyoji Kakuchi, Sep. 2010, MACROMOLECULES, 43, 18, 7406, 7411, Scientific journal

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• Controlled/Living Ring-Opening Polymerization of delta-Valerolactone Using Triflylimide as an Efficient Cationic Organocatalyst, Ryohei Kakuchi,Yosuke Tsuji,Kaori Chiba,Keita Fuchise,Ryosuke Sakai,Toshifumi Satoh,Toyoji Kakuchi, Sep. 2010, MACROMOLECULES, 43, 17, 7090, 7094, Scientific journal

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• Pendant Structure Governed Anion Sensing Property for Sulfonamide-Functionalized Poly(phenylacetylene)s Bearing Various alpha-Amino Acids, Ryohei Kakuchi,Ryotaro Shimada,Yasuyuki Tago,Ryosuke Sakai,Toshifumi Satoh,Toyoji Kakuchi, Apr. 2010, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 48, 8, 1683, 1689, Scientific journal

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• Host-Guest Complexation-Triggered Chiroptical Change of Poly(phenylacetylene)s Bearing Binaphthocrown Ether Moieties on the Main Chain, Ryosuke Sakai,Takafumi Yonekawa,Issei Otsuka,Ryohei Kakuchi,Toshifumi Satoh,Toyoji Kakuchi, Mar. 2010, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 48, 5, 1197, 1206, Scientific journal

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• Aggregation Behavior of Poly(N-isopropylacrylamide) Semitelechelics with a Perfluoroalkyl Segment in Water, Zheng Li,Samuel Oppong Kyeremateng,Keita Fuchise,Ryohei Kakuchi,Ryosuke Sakai,Toyoji Kakuchi,Joerg Kressler, Dec. 2009, MACROMOLECULAR CHEMISTRY AND PHYSICS, 210, 24, 2138, 2147, Scientific journal

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• Control of Thermoresponsive Property of Urea End-Functionalized Poly(N-isopropylacrylamide) Based on the Hydrogen Bond-Assisted Self-Assembly in Water, Keita Fuchise,Ryohei Kakuchi,Sung-Tso Lin,Ryosuke Sakai,Shin-Ichiro Sato,Toshifumi Satoh,Wen-Chang Chen,Toyoji Kakuchi, Nov. 2009, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 47, 22, 6259, 6268, Scientific journal

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• Strong Bronsted Acid as a Highly Efficient Promoter for Group Transfer Polymerization of Methyl Methacrylate, Ryohei Kakuchi,Kaori Chiba,Keita Fuchise,Ryosuke Sakai,Toshifumi Satoh,Toyoji Kakuchi, Nov. 2009, MACROMOLECULES, 42, 22, 8747, 8750, Scientific journal

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• Synthesis of Well-Defined Macrocyclic Poly(delta-valerolactone) by "Click Cyclization", Hideki Misaka,Ryohei Kakuchi,Chunhong Zhang,Ryosuke Sakai,Toshifumi Satoh,Toyoji Kakuchi, Jul. 2009, MACROMOLECULES, 42, 14, 5091, 5096, Scientific journal

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• Structural effect of a series of block copolymers consisting of poly(N-isopropylacrylamide) and poly(N-hydroxyethylacrylamide) on thermoresponsive behavior, Yougen Chen,Masako Sone,Keita Fuchise,Ryosuke Sakai,Ryohei Kakuchi,Qian Duan,Jingliang Sun,Atsushi Narumi,Toshifumi Satoh,Toyoji Kakuchi, Jul. 2009, REACTIVE & FUNCTIONAL POLYMERS, 69, 7, 463, 469, Scientific journal

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• Effect of the Pendant Structure on Anion Signaling Property of Poly(phenylacetylene)s Conjugated to alpha-Amino Acids through Urea Groups, Ryohei Kakuchi,Yasuyuki Tago,Ryosuke Sakai,Toshifumi Satoh,Toyoji Kakuchi, Jul. 2009, MACROMOLECULES, 42, 13, 4430, 4435, Scientific journal

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• Optical and Chiroptical Output of Anion Recognition Event Using Clustered Sulfonamide Groups Organized on Poly(phenylacetylene) Backbone, Ryohei Kakuchi,Tatsuro Kodama,Ryotaro Shimada,Yasuyuki Tago,Ryosuke Sakai,Toshifumi Satoh,Toyoji Kakuchi, Jun. 2009, MACROMOLECULES, 42, 12, 3892, 3897, Scientific journal

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• Efficient Anion Recognition Property of Three Dimensionally Clustered Amide Groups Organized on a Poly(phenylacetylene) Backbone, Ryohei Kakuchi,Sachiko Nagata,Yasuyuki Tago,Ryosuke Sakai,Issei Otsuka,Toshifumi Satoh,Toyoji Kakuchi, Mar. 2009, MACROMOLECULES, 42, 5, 1476, 1481, Scientific journal

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• Chiroptical switching system based on the host-guest interaction between metal cations and poly(phenylacetylene)s bearing polycarbohyd rate ionophore, Issei Otsuka,Ryosuke Sakai,Ryohei Kakuchi,Toshifumi Satoh,Toyoji Kakuchi, Sep. 2008, EUROPEAN POLYMER JOURNAL, 44, 9, 2971, 2979, Scientific journal

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• A versatile method for adjusting thermoresponsivity: Synthesis and 'Click' reaction of an azido end-functionalized poly(N-isopropylacrylamide), Atsushi Narumi,Keita Fuchise,Ryohei Kakuchi,Atsushi Toda,Toshifumi Satoh,Seigou Kawaguchi,Kenji Sugiyama,Akira Hirao,Toyoji Kakuchi, Jul. 2008, MACROMOLECULAR RAPID COMMUNICATIONS, 29, 12-13, 1126, 1133, Scientific journal

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• Size-Specific, Colorimetric Detection of Counteranions by using Helical Poly(phenylacetylene) Conjugated to L-Leucine Groups through Urea, Ryohei Kakuchi,Sachiko Nagata,Ryosuke Sakai,Issei Otsuka,Hiroshi Nakade,Toshifumi Satoh,Toyoji Kakuchi, 2008, CHEMISTRY-A EUROPEAN JOURNAL, 14, 33, 10259, 10266, Scientific journal

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• Thermoresponsive on-off switching of chiroptical property induced in poly(4 '-ethynylbenzo-15-crown-5)/alpha-amino acid system, R Sakai,Otsuka\, I,T Satoh,R Kakuchi,H Kaga,T Kakuchi, Jun. 2006, MACROMOLECULES, 39, 12, 4032, 4037, Scientific journal

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• Chiral discrimination of a helically organized crown ether array parallel to the helix axis of polyisocyanate, R Sakai,Otsuka\, I,T Satoh,R Kakuchi,H Kaga,T Kakuchi, Jan. 2006, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 44, 1, 325, 334, Scientific journal

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• Metal-cation-induced chiroptical switching for poly(phenylacetylene) bearing a macromolecular ionophore as a graft chain, Otsuka\, I,R Sakai,T Satoh,R Kakuchi,H Kaga,T Kakuchi, Dec. 2005, JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 43, 23, 5855, 5863, Scientific journal

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• Synthesis and helicity induction of poly(phenylacetylene) derivatives bearing a crown cavity on the main chain, R Kakuchi,R Sakai,Otsuka\, I,T Satoh,H Kaga,T Kakuchi, Nov. 2005, MACROMOLECULES, 38, 23, 9441, 9447, Scientific journal

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• Helicity induction of polyisocyanate with a crown cavity on the main chain synthesized by cyclopolymerization of alpha,omega-diisocyanate, R Sakai,T Satoh,R Kakuchi,H Kaga,T Kakuchi, Jun. 2004, MACROMOLECULES, 37, 11, 3996, 4003, Scientific journal

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• Macromolecular helicity induction for novel optically inactive poly(phenyl isocyanate) bearing crown ether based on the host-guest complexation, R Sakai,T Satoh,R Kakuchi,H Kaga,T Kakuchi, May 2003, MACROMOLECULES, 36, 10, 3709, 3713, Scientific journal

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• Fast-track computational access to reaction mechanisms provides comprehensive insights into aminolysis postpolymerization modification reactions, Matsubara, Kiho;Chou, Li-Chieh;Amii, Hideki;Kakuchi, Ryohei, 01 Oct. 2022, MOLECULAR SYSTEMS DESIGN & ENGINEERING, 7, 10, 1263, 1276

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• Pineapple Fiber Hybrids Prepared by the Fusion of radiation-induced Graft Polymerization and Kabachnik-Fields three-component Reaction (RIGP-KF3CR), Barba, Bin Jeremiah D.;Causapin, Celine Grace, V;Cabalar, Patrick Jay E.;Luna, John Andrew A.;Seko, Noriaki;Omichi, Masaaki;Kakuchi, Ryohei;Madrid, Jordan F., 2022, JOURNAL OF NATURAL FIBERS

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• A-la-carte surface functionalization of organic materials via the combination of radiation-induced graft polymerization and multi-component reactions, Kakuchi, Ryohei;Matsubara, Kiho;Madrid, Jordan F.;Barba, Bin Jeremiah D.;Omichi, Masaaki;Ueki, Yuji;Seko, Noriaki, 2022, MRS COMMUNICATIONS, 12, 5, 552, 564

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MISC

• Vibronic switching of fluorescence output from urea-functionalized poly (p-phenylene) receptor by fluoride-anion recognition, Yanai Kazuma,Shimada Ryotaro,Fuchise Keita,Kakuchi Ryohei,Sakai Ryosuke,Satoh Toshifumi,Kakuchi Toyoji,Sato Shin-ichiro, Apr. 2013, ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 245, Summary international conference
• 有機超強塩基を触媒に用いたメタクリル酸メチルのグループ移動重合, 北門惇介,千葉香織,渕瀬啓太,覚知亮平,堺井亮介,佐藤敏文,覚知豊次, 26 Jan. 2010, 化学系学協会北海道支部冬季研究発表会講演要旨集, 2010, 87
• ATRPによるポリ(N‐イソプロピルアクリルアミド)の精密合成[2]クリック反応を用いたポリ(N‐イソプロピルアクリルアミド)の曇点制御, 渕瀬啓太,戸田篤志,覚知亮平,鳴海敦,REE Moonhor,平尾明,佐藤敏文,覚知豊次, 04 Sep. 2007, 高分子学会予稿集(CD-ROM), 56, 2 Disk1, 1B14
• フォスファゼン塩基を触媒に用いたメタクリル酸メチルのグループトランスファー重合, 森宏太,覚知亮平,堺井亮介,佐藤敏文,覚知豊次, 26 Jan. 2009, 化学系学協会北海道支部冬季研究発表会講演要旨集, 2009, 95

Books etc

• Multi-Component and Sequential Reactions in Polymer Synthesis (Advances in Polymer Science), Contributor, Patrick Theato, Metal-Catalyzed Multicomponent Reactions for the Synthesis of Polymers, Springer, Jul. 2015, 206, ISBN: 3319207199
• Functional Polymers by Post-Polymerization Modification: Concepts, Guidelines and Applications, Contributor, Patrick Theato,Harm-Anton Klok, Post-Polymerization Modifications via Active Esters., Wiley-VCH, Feb. 2013, 436

Presentations

• Synthesis and helicity induction of poly(phenylacetylene) bearing crown ether on the main chain, Ryohei Kakuchi,Ryosuke Sakai,Issei Otsuka,Toshifumi Satoh,Toshifumi Satoh,Harumi Kaga,Toyoji Kakuchi, Polymer Preprints, Japan, 01 Dec. 2005
• Metal cation-induced helix-helix transition for poly(phenylacetylene) bearing carbohydrate polymer as graft chain, Issei Otsuka,Ryosuke Sakai,Toshifumi Satoh,Toshifumi Satoh,Ryohei Kakuchi,Harumi Kaga,Toyoji Kakuchi, Polymer Preprints, Japan, 01 Dec. 2005
• Helicity control of poly(phenylacetylene) bearing polycarbohydrate ionophore as graft chain, Issei Otsuka,Ryosuke Sakai,Toshifumi Satoh,Toshifumi Satoh,Ryohei Kakuchi,Harumi Kaga,Toyoji Kakuchi, Polymer Preprints, Japan, 01 Dec. 2005
• Asymmetric polymerization of phenylisocyanate bearing crown ether, Rvosuke Sakai,Issei Otsuka,Ryohei Kakuchi,Toshifumi Satoh,Toshifumi Satoh,Harumi Kaga,Toyoji Kakuchi, Polymer Preprints, Japan, 01 Dec. 2005
• Precise synthesis of polymers functionalized with anhydride moieties, Ryohei Kakuchi,Kobayashi Shingo,Kenji Sugiyama,Akira Hirao,Jianbin Zhang,Tom Hoye,Chris Macosko, Polymer Preprints, Japan, 18 Oct. 2006
• Synthesis of star-branched polymers by means of reactive melt blending of end-functionalized polymers, K. Sugiyama,R. Kakuchi,S. Kobayashi,Akira Hirao,J. Zhang,T. Hoye,C. Macosko, Polymer Preprints, Japan, 01 Dec. 2006

Industrial Property Rights

• Patent right, PCT/JP2015/080036, 23 Oct. 2015

Awards

• May 2018

Research Projects

• Apr. 2019, Mar. 2022, Principal investigator
• Apr. 2016, Mar. 2018, Principal investigator

Educational Activities

Awards

• Polymer Journal Rising Stars-2021-, Ryohei Kakuchi, Polymers of lignin-sourced components as a facile chemical integrant for the Passerini three-component reaction, SPSJ, Nov. 2021, Publisher, Japan
• May 2018, Japan society, Japan