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Hirano Lab., Polym. Chem., Dept. Appl. Chem., Tokushima Univ.
2024
2024
Determination of the blending parameters of ternary blends containing a terpolymer as a component copolymer by multivariate analysis of NMR data
Ryota Kamiike, Tomohiro Hirano, Koichi Ute
Polymer, 2024, 310, 127467.
Synthesis of photodegradable polyesters from bio-based 3,4-dimethoxycinnamic acid and investigation of their degradation behaviors
Kazuma Abe, Miyuki Oshimura, Ryo Kawatani, Tomohiro Hirano, Koichi Ute
Polymer, 2024, 306, 127204.
Synthesis of alkynyl spacer-containing chiral polyguanidines and their noncovalent modification for organocatalyst design
Daiki Mori, Keiji Minagawa, Fumitoshi Yagishita, Miyuki Oshimura, Tomohiro Hirano, Yasushi Imada, Yukihiro Arakawa
Mol. Catal., 2024, 557, 113973.
2023
2023
Anionic polymerization of methyl methacrylate and chain-end modification via terminal-selective transesterification with bulky zincate
Tomohiro Hirano, Masayoshi Watanabe, Miyuki Oshimura, Koichi Ute
Eur. Polym. J., 2023, 201, 112581
Multivariate statistical analysis of 1H NMR data for binary and ternary blends of copolymers to determine the chemical composition and blending fractions of the components
Ryota Kamiike, Tomohiro Hirano, Koichi Ute
Polym. J., 2023, 55, 967-974.
Featured Articles
Nuclear Magnetic Resonance Analysis of Hydrothermal Reactions of Ethyl- and Octylamine in Sub- and Supercritical Water
Ken Yoshida, Ayato Doi, Haruka Yoshioka, Tomohiro Hirano, Masaru Nakahara
J. Phys. Chem. A, 2023, 127, 3848-3861.
Immobilization of a flavin molecule onto poly(methacrylic acid)s and its application in aerobic oxidation catalysis: effect of polymer stereoregularity
Yukihiro Arakawa, Yoshiko Sogabe, Keiji Minagawa, Miyuki Oshimura, Tomohiro Hirano, Koichi Ute, Yasushi Imada
Org. Biomol. Chem., 2023, 21, 289-293.
2022
2022
Statistical determination of chemical composition and blending fraction of copolymers by multivariate analysis of 1H NMR spectra of binary blends of the copolymers
NMR スペクトルの多変量解析によるメタクリレート系共重合体の組成・連鎖分布解析
Cationic homopolymerization of trans-anethole in the presence of solvate ionic liquid comprising LiN(SO2CF3)2 and Lewis bases
Tomohiro Hirano, Takumi Yuki, Ryotaro Kizu, Ryota Kamiike, Miyuki Oshimura, Koichi Ute
Polymer, 2022, 246, 124780.
Determination of Monomer Reactivity Ratios from a Single Sample using Multivariate Analysis of the 1H NMR Spectra of Poly[(methyl methacrylate)-co-(benzyl methacrylate)]
Tomohiro Hirano, Ryota Kamiike, Takumi Yuki, Daishi Matsumoto, Koichi Ute
Polym. J., 2022, 54, 623-631.
2021
2021
Hydrogen-Bond-Assisted Asymmetric Radical Cyclopolymerization of N-allyl-N-tert-butylacrylamide in the Presence of Chiral Tartrates
Tomohiro Hirano, Yosuke Fujita, Miki Shinomiya, Yukihiro Arakawa, Fumitoshi Yagishita, Akira Emoto, Miyuki Oshimura, Koichi Ute
Polymer, 2021, 226, 123823.
2020
2020
De-tert-butylation of Poly(N-tert-butyl-N-n-propylacrylamide): Stereochemical Analysis at the Triad Level
Tomohiro Hirano, Misato Sugiura, Ryuya Endo, Miyuki Oshimura, Koichi Ute
J. Polym. Sci., 2020, 58, 2857-2863.
Chemoselective radical polymerization of N-allylmethacrylamide with an aid of complexation with Li+ cation
Tomohiro Hirano, Yuta Ogasa, Miyuki Oshimura, Koichi Ute
Polymer, 2020, 201, 122664.
Unusually large hysteresis in temperature-responsive phase-transition behavior of aqueous solutions of isotactic copolymers comprising N-ethylacrylamide and N-isopropylacrylamide
Tomohiro Hirano, Menghao Li, Kouki Maeda, Miyuki Oshimura, Koichi Ute
Polymer, 2020, 198, 122530.
2019
2019
NMR Analysis of Poly(Lactic Acid) via Statistical Models
Koto, Suganuma, Tetsuo Asakura, Miyuki Oshimura, Tomohiro Hirano, Koichi Ute and H. N. Cheng
Polymers, 2019, 11, 725.
2018
2018
合成高分子の高圧高温NMR観測：亜臨界流体中の高い分子運動性を利用した高分解能測定
Thermally induced cationic polymerization of isobutyl vinyl ether in toluene in the presence of solvate ionic liquid
Tomohiro Hirano, Ryotaro Kizu, Junpei Hashimoto, Nenji Munekane, Yohei Miwa, Miyuki Oshimura and Koichi Ute
Polym. Chem., 2018, 9, 1421-1429.
Multivariate analysis of 13C NMR spectra to extract information about monomer sequences in poly(methyl methacrylate-co-benzyl methacrylate)s prepared by various polymer reactions
Yuchin Hsu, Mingyeh Chuang, Tomohiro Hirano, Koichi Ute
Polym. J., 2018, 50, 355-363.
2017
2017
Synthesis of aliphatic polycarbonates by irreversible polycondensation catalyzed by dilithium tetra-tert-butylzincate
Miyuki Oshimura, Tomoki Hirata, Tomohiro Hirano, Koichi Ute
Polymer, 131, 50-55 (2017).
NMR studies of water dynamics during sol-to-gel transition of poly (N-isopropylacrylamide) in concentrated aqueous solution
Shunsuke Kametani, Sokei Sekine, Takahiro Ohkubo, Tomohiro Hirano, Koichi Ute, H. N. Cheng, Tetsuo Asakura
Polymer, 109, 287-296 (2017).
2016
2016
高分子反応で得られる共重合体の連鎖解析と連鎖制御
右手浩一、平野朋広
高分子, 65, 506-507 (2016).
Effects of Syndiotacticity on the Dynamic and Static Phase Separation Properties of Poly(N-Isopropylacrylamide) in Aqueous Solution
Takanori, Tada, Tomohiro Hirano, Koichi Ute, Yukiteru Katsumoto Taka-Aki Asoh, Tatsuya Shoji, Noboru Kitamura and Yasuyuki Tsuboi
J. Phys. Chem. B, 120 (31), 7724-7730 (2016).
Efficient acylation and transesterification catalyzed by dilithium tetra-tert-butylzincate at low temperatures
Miyuki Oshimura, Yuki Oda, Keita Kondoh, Tomohiro Hirano and Koichi Ute
Tetrahedron Lett., 57 (19), 2070–2073 (2016).
Multivariate analysis of 13C NMR spectra of branched copolymers prepared by initiator-fragment incorporation radical copolymerization of ethylene glycol dimethacrylate and tert-butyl methacrylate
Tomohiro Hirano, Ryota Kamiike, Yuchin Hsu, Hikaru Momose and Koichi Ute
Polym. J., 48, 793-800 (2016).
2015
2015
Syndiotactic- and heterotactic-specific radical polymerization of N-n-propylmethacrylamide complexed with alkali metal ions
Tomohiro Hirano, Tadashi Segata, Junpei Hashimoto, Yohei Miwa, Miyuki Oshimura and Koichi Ute
Polym. Chem., 6, 4927-4939 (2015).
Stereospecific polymerization
Tomohiro Hirano and Takehiro Kitaura
In “Encyclopedia of Polymeric Nanomaterials,” S. Kobayashi, K. Müllen eds., Springer, Germany, Chapter ID: 216.
水素結合を利用したN-アルキルアクリルアミドの立体特異性ラジカル重合
Dual role for alkali metal cations in enhancing the low-temperature radical polymerization of N,N-dimethylacrylamide
Tomohiro Hirano, Tatsuya Saito, Yoshitaka Kurano, Yohei Miwa, Miyuki Oshimura and Koichi Ute
Polym. Chem., 6, 2054-2064 (2015).
2014
2014
Hydrogen-bond-assisted isotactic-specific radical polymerization of N-vinyl-2-pyrrolidone with tartrate additives in toluene at low temperatures: high-resolution 1H NMR analysis
Tomohiro Hirano, Yuya Miyamoto, Shinya Amano, Kazuya Tatsumi, Takuya Anmoto, Hiroshi Kimura, Ken Yoshida, Miyuki Oshimura and Koichi Ute
RSC Adv, 4, 53079-53089 (2014)
Ring-opening polymerization of ε-caprolactone with dilithium tetra-tert-butylzincate under mild conditions
Miyuki Oshimura, Ryo Okazaki, Tomohiro Hirano, and Koichi Ute
Polym J, 46, 866-872 (2014).
2013
2013
合成高分子のNMRスペクトルの多変量解析−オフライン二次元NMR法−
平野 朋広
ぶんせき, 631-632 (2013).
Effect of composition and stereoregularity on phase-transition behavior of aqueous N-ethylacrylamide/N-n-propylacrylamide copolymer solutions
Tomohiro Hirano, Akiko Ono, Hiroaki Yamamoto, Takeshi Mori, Yasushi Maeda, Miyuki Oshimura, and Koichi Ute
Polymer, 54, 5601-5608 (2013).
2012
2012
Syndiotactic specific radical polymerization of N-isopropylacrylamide in toluene at low temperatures in the presence of silyl alcohols
Application of Multivariate Analysis of NMR Spectra of Poly(N-isopropylacrylamide) to Assignment of Stereostructures and Prediction of Tacticity Distribution
Tomohiro Hirano, Takuya Anmoto, Nao Umezawa, Hikaru Momose, Yukiteru Katsumoto, Miyuki Oshimura, and Koichi Ute
Polym. J., 44, 815–820 (2012).
Statistical Determination of Chemical Composition and Monomer Sequence Distribution of Poly(methyl methacrylate-co-tert-butyl methacrylate)s by Multivariate Analysis of 13C NMR Spectra
Hikaru Momose, Tomoya Maeda, Kosuke Hattori, Tomohiro Hirano, and Koichi Ute
Polym. J., 44, 808–814 (2012).
Syndiotactic- and Heterotactic-Specific Radical Polymerizations of N-n-Propyl-α-fluoroacrylamide and Phase-Transition Behaviors of Aqueous Solutions of Poly(N-n-propyl-α-fluoroacrylamide)
Tomohiro Hirano, Takahiro Furutani, Miyuki Oshimura, and Koichi Ute
J. Polym. Sci.: Part A: Polym. Chem., 50, 2471-2483 (2012).
Isotactic-specific anionic polymerization of N-isopropylacrylamide with dilithium tetra-tert-butylzincate in the presence of a fluorinated alcohol or Lewis acid
Tomohiro Hirano, Takahiro Furutani, Tatsuya Saito, Tadashi Segata, Miyuki Oshimura, and Koichi Ute
Polymer, 53, 4961-4966 (2012).
Kinetic Hydrate Inhibition of Poly(N-isopropylacrylamide)s with Different Tacticities
Pei Cheng Chua, Malcolm A. Kelland, Tomohiro Hirano, and Hiroaki Yamamoto
Energy&Fuels, 26, 4961-4967 (2012).
NMRスペクトルの多変量解析による合成高分子の一次構造解析
百瀬 陽, 平野朋広, 右手浩一
ＮＭＲ, 3, 27-37 (2012).
2011
2011
Effect of a combination of hexamethylphosphoramide and alkyl alcohol on the stereospecificity of radical polymerization of N-isopropylacrylamide
Tomohiro Hirano, Akihiro Morikami, Yasuhiro Fujioka, and Koichi Ute
Polymer, 52, 629-634 (2011).
Control of Stereospecificity in the Radical Polymerization of N-Methyl-N-(2-pyridyl)acrylamide by Conformational Switching of the Monomer with Protonation
Tomohiro Hirano, Akihiro Morikami, and Koichi Ute
J. Polym. Sci.: Part A: Polym. Chem., 49, 4164-4171 (2011).
Effects of chemical composition and stereoregularity on phase-transition behaviors of aqueous solutions of copolymers composed of N-isopropylacrylamide and N-n-propylacrylamide
Tomohiro Hirano, Hiroaki Yamamoto, and Koichi Ute
Polymer, 52, 5277-5281 (2011).
2010
2010
Design of Temperature-Responsive Polymers with Enhanced Hysteresis: α,α-Disubstituted Vinyl Polymers
Takeshi Mori, Suguru Beppu, Mohamed R. Berber, Hironori Mori, Takumi Makimura, Ayako Tsukamoto, Keiji Minagawa, Tomohiro Hirano, Masami Tanaka, Takuro Niidome, Yoshiki Katayama, Tatsuya Hirano, and Yasushi Maeda
Langmuir, 26, 9224-9232 (2010).
Unusually Large Hysteresis of Temperature-Responsive Poly(N-Ethyl-2-Propionamidoacrylamide) Studied by Microcalorimetry and FT-IR
Mohamed Berber, Hironori Mori, Inas Hafez, Keiji Minagawa, Masami Tanaka, Takuro Niidome, Atsushi Maruyama, Tomohiro Hirano, Takeshi Mori, Yoshiki Katayama, and Yasushi Maeda
J. Phys. Chem. B, 114, 7784-7790 (2010).
Stereospecific Radical Polymerization of N-tert-Butoxycarbonylacrylamide in the Presence of Fluorinated Alcohols
Tomohiro Hirano, Ryosuke Yamaoka, Takamasa Miyazaki, and Koichi Ute
J. Polym. Sci.: Part A: Polym. Chem., 48, 5718-5726 (2010).
2009
2009
Syndiotactic Poly(N-n-propylacrylamide) shows Highly Cooperative Phase Transition
Takeshi Mori, Tomohiro Hirano, Atsushi Maruyama, Yoshiki Katayama, Takuro Niidome, Yoichi Bando, Koichi Ute, Shinji Takaku, and Yasushi Maeda
Langmuir, 25, 48-50 (2009).
Syndiotactic-specific radical polymerization of N,N-dimethylacrylamide in the presence of tartrates: a proposed mechanism for the polymerization
Tomohiro Hirano, Shuhei Masuda, Shou Nasu, Koichi Ute, and Tsuneyuki Sato
J. Polym. Sci.: Part A: Polym. Chem., 47, 1192-1203 (2009).
Heterotactic-specific radical polymerization of N-isopropylacrylamide and phase transition behavior of aqueous solution of heterotactic poly(N-isopropylacrylamide)
Tomohiro Hirano, Takahiro Kamikubo, Yuya Okumura, Yoichi Bando, Ryosuke Yamaoka, Takeshi Mori, and Koichi Ute
J. Polym. Sci.: Part A: Polym. Chem., 47, 2539-2550 (2009).
Metal-free isotactic-specific radical polymerization of N-alkylacrylamides with 3,5-dimethylpyridine N-oxide: the effect of the N-substituent and solvent on the isotactic specificity
Tomohiro Hirano, Hideaki Ishizu, Ryosuke Yamaoka, Koichi Ute, and Tsuneyuki Sato
Polymer, 50, 3522-3527 (2009).
Multivariate analysis of 13C NMR spectra of methacrylate copolymers and homopolymer blends
Hikaru Momose, Kosuke Hattori, Tomohiro Hirano, and Koichi Ute
Polymer, 50, 3819-3821 (2009).
Multivariate analysis of 13C NMR spectra of methacrylate copolymers and homopolymer blends
Hikaru Momose, Kosuke Hattori, Tomohiro Hirano, and Koichi Ute
Polymer, 50, 3819-3821 (2009).
2008
2008
Metal-free isotactic-specific radical polymerization of N-isopropylacrylamide with pyridine N-oxide derivatives: The effect of methyl substituents of pyridine N-oxide on the isotactic specificity and the proposed mechanism for the isotactic-specific radical polymerization
Tomohiro Hirano, Hidekazu Ishizu, and Tsuneyuki Sato
Polymer, 49, 438-445 (2008).
Hydrogen-bond-assisted syndiotactic-specific radical polymerization of N-isopropylacrylamide: The solvent effect on the stereospecificity
Tomohiro Hirano, Takahiro Kamikubo, Yasuhiro Fujioka, and Tsuneyuki Sato
Eur. Polym. J., 44, 1053-1059 (2008).
Hydrogen-bond-assisted syndiotactic-specific radical polymerization of N,N-dimethylacrylamide in the presence of tartrates
Tomohiro Hirano, Shuhei Masuda, and Tsuneyuki Sato
J. Polym. Sci.: Part A: Polym. Chem., 46, 3145-3149 (2008).
Hydrogen-bond-assisted syndiotactic-specific radical polymerization of N-alkylacrylamides: the effect of the N-substituents on the stereospecificities and unusual large hysteresis in the phase-transition behavior of aqueous solution of syndiotactic poly(N-n-propylacrylamide)
Tomohiro Hirano, Kimihiko Nakamura, Takahiro Kamikubo, Satoshi Ishii, Kanami Tani, Takeshi Mori, and Tsuneyuki Sato
J. Polym. Sci.: Part A: Polym. Chem., 46, 4575-4583 (2008).
Synthesis of heterotactic and syndiotactic polyacrylamides via stereospecific radical polymerization of N-tert-butoxycarbonylacrylamide in the presence of fluorinated alcohols
Tomohiro Hirano, Takamasa Miyazaki, and Koichi Ute
J. Polym. Sci.: Part A: Polym. Chem., 46, 5698-5701 (2008).
Molecular understanding of the UCST type phase separation behavior of a stereocontrolled poly(N-isopropylacrylamide) in bis(2-methoxyethyl) ether
Misao Koyama, Tomohiro Hirano, Keiichi Ohno, Yukiteru Katsumoto
J. Phys. Chem. B, 112, 10854-10860 (2008).
Radical polymerization behabior of dimethyl vinylphosphonate: homopolymerization and copolymerization with trimethoxyvinylsilane
Tsuneyuki Sato, Makoto Hasegawa, Makiko Seno, and Tomohiro Hirano
J. Appl. Polym. Sci., 109, 3746-3752 (2008).
2007
2007
ラジカル重合による分岐ポリマー
Heterotactic poly(N-isopropylacrylamide) via radical polymerization in the presence of fluorinated alcohols
Tomohiro Hirano, Takahiro Kamikubo, Yuya Okumura, and Tsuneyuki Sato
Polymer, 48, 4921-4925 (2007).
2006
2006
Hydrogen-bond-assisted stereocontrol in the radical polymerization of N-isopropylacrylamide with bidentate Lewis base
Tomohiro Hirano, Hiroko Kitajima, Makiko Seno and Tsuneyuki Sato
Polymer, 47, 539-546 (2006).
Hyperbranched Acrylate Copolymer via Initiator-Fragment Incorporation Radical Copolymerization of Divinylbenzene and Ethyl Acrylate: Synthesis, Characterization, Hydrolysis, Dye-Solubilization, Ag Particle-Stabilization,and Porous Film Formation
Tsuneyuki Sato, Hiroki Nobutane, Tomohiro Hirano, and Makiko Seno
Macromol. Mater. Eng., 291, 162-172 (2006).
Hyperbranched Polymer through Initiator-Fragment Incorporation Radical Copolymerization of Divinyl Adipate with Allyl Acetate: Synthesis, Characterization, Dye Solubilization, Metal-Nanoparticle Stabilization, and Porous Film Formation
Tsuneyuki Sato, Kazuki Nomura, Tomohiro Hirano, Makiko Seno
Polym. J., 38, 240-249 (2006).
Initiator-Fragment Incorporation Copolymerization of Vinyl Acetate and 1,2-polybutadiene as a multivinyl monomer
Tsuneyuki Sato, Atsushi Ono, Tomohiro Hirano, Makiko Seno
J. Polym. Sci.: Part A: Polym. Chem., 44, 2328-2337 (2006).
Synthesis and characterization of soluble hyperbranched polymer via initiator-fragment incorporation radical polymerization of divinylbenzene with dimethyl 2,2-azobisisobutyrate
Tomohiro Hirano, Naoki Higashida, Hongwei Wang, Makiko Seno, Tsuneyuki Sato
J. Appl. Polym. Sci., 100, 664-670 (2006).
Soluble hyperbranched copolymer via initiator-fragment incorporation radical copolymerization using a trivinyl monomer
Tsuneyuki Sato, Tsukasa Nakamura, Makiko Seno, Tomohiro Hirano
Polymer, 47, 4630-4637 (2006).
Dual roles of alkyl alcohols as syndiotactic-specificity inducers and accelerators in the radical polymerization of N-isopropylacrylamide and some properties of syndiotactic poly(N-isopropylacrylamide)
Tomohiro Hirano, Yuya Okumura, Hiroko Kitajima, Makiko Seno, Tsuneyuki Sato
J. Polym. Sci.: Part A: Polym. Chem., 44, 4450-4460 (2006).
Remarkable effect of hydrogen-bonding interaction on stereospecificity in the radical polymerization of N-vinylacetamide
Tomohiro Hirano, Yuya Okumura, Makiko Seno, Tsuneyuki Sato
Eur. Polym. J., 42, 2114-2124 (2006).
Initiator-Fragment Incorporation Radical Polymerization of Diallyl Phthalate: Kinetics, Formation of Hyperbranched Polymer and Iridescent Porous Film Thereof
Tsuneyuki Sato, Kazuki Nomura, Tomohiro Hirano, Makiko Seno
J. Appl. Polym. Sci., 102, 408-415 (2006).
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