Papers - TAKAGI Koji

Unraveling the Activity and Stability of Cationic Tellurium Activators in Ritter-Type Reactions Reviewed

Koji Takagi, Shuhei Hayashi, Souma Sugie

Chem. Commun.   60 ( 82 )   11786 - 11789   2024.09

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Controlled Cationic Polymerization with Organotellurium Catalysts Utilizing Redox-Mediated Chalcogen Bonding Interaction Reviewed

Koji Takagi, Shuhei Hayashi, Nao Sakakibara

Macromolecules   57 ( 7 )   3358 - 3367   2024.03

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

CO2 gas-triggered wettability control of silylation-modified CNC films by manipulating the surface structure and introducing tertiary amino groups Reviewed

Hiroyuki Taniyama and Koji Takagi

Polym. J.   56 ( 6 )   609 - 617   2024.02

　More details

Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Pnictogen bonding-mediated controlled cationic polymerization of styrene derivatives –Catalytic activity investigation using non-ionic and ionic pnictogen compounds– Reviewed

Tomoki Hasegawa, Koji Takagi

61 ( 21 )   2655 - 2664   2023.11

　More details

Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Controlling the surface structure and functionalization of a cellulose nanocrystal film modified by using glycidyl silane in a coating process Reviewed

Hiroyuki Taniyama, Koji Takagi

Polym. J.   55   675 - 682   2023.02

　More details

Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis, Physical Properties, and OFET Characteristics of a Propeller-Shaped Molecule with a Dithiarubicene Blade Reviewed

Kenji Tsukamoto, Koji Takagi,* Seihou Jinnai, Yutaka Ie, Mitsuo Hara, and Takanori Fukushima

Mol. Syst. Des. Eng.   7 ( 12 )   1639 - 1649   2022.12

　More details

Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Application of Thiourea/Halogen Bonding Donor Co-catalysis in Metal-Free Cationic Polymerization of Isobutyl Vinyl Ether and Styrene Derivatives Reviewed

55 ( 13 )   5756 - 5765   2022.07

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Palladium-Catalyzed Intramolecular Direct Arylation of Aromatic Tertiary Amide Compounds Revisited Reviewed

Koji Takagi,* Asuka Maeda, and Ryotaro Tsunekawa

Results in Chemistry   4   100432   2022.07

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Oxidative (Co)polymerization of Dithiarubicene Derivatives and Electrochromic Properties of Narrow Bandgap Conjugated Polymers Reviewed

Koji Takagi,* Takeru Yamamori, and Kenji Tsukamoto

54 ( 5 )   1055 - 1062   2022.05

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Study on controlling the surface structure and properties of cellulose nanocrystal film modified by alkoxysilanes in green solvents Reviewed

38 ( 18 )   5550 - 5556   2022.04

　More details

Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Controlled/Living Cationic Polymerization of p-Methoxystyrene using Tellurium-Based Chalcogen Bonding Catalyst–Discovery of New Water-Tolerant Lewis Acid Catalyst Reviewed

55 ( 9 )   3671 - 3680   2022.04

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Toward the synthesis of a belt-shaped cyclic pi-conjugated system comprising para-phenylene framework and amide bridging unit Reviewed

95 ( 1 )   47 - 51   2022.01

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Dicationic oligotelluroxane or mononuclear telluronium cation? Elucidation of true catalytic species and activation mechanism of benzylic carbon-halogen bond Reviewed International journal

57 ( 100 )   13736 - 13739   2021.11

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

End-Functionalization of Dithiarubicene: Modulation of Optoelectronic Properties by Metal-Catalyzed Coupling Reactions and Device Application Reviewed International journal

9 ( 18 )   5920 - 5929   2021.03

　More details

Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Stereoselectivity in Dehydrative Cyclic Trimerization of Substituted 4-Alkylaminobenzoic Acids Reviewed International journal

45 ( 3 )   1187 - 1193   2021.01

　More details

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

Cationic Polymerization of Vinyl Monomers using Halogen Bonding Organocatalysts with Varied Activity Reviewed International journal

Koji Takagi, Hiroto Murakata, Koji Yamauchi, and Kohei Hashimoto

Polym. Chem.   11 ( 42 )   6739 - 6744   2020.10

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Cationic Polymerization of n-Hexyloxyallene by using Halogen Bonding Organocatalysts Reviewed International journal

Koji Takagi* and Kanami Okamura

J. Polym. Sci., Part A: Polym. Chem.   57 ( 24 )   2436 - 2441   2019.12

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Charge-Neutral and Self-Doped Cyclopentadithiophene-Based Conjugated Polymers: Influence of Side Chain on Optical, Electrical, and Thermoelectric Properties Reviewed International journal

Koji Takagi,* Hiroki Yano, Hiroki Ito, and Naoki Kishi

Polymer   181   121787   2019.10

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

pi-Extension of Electron-Accepting Dithiarubicene with Cyano-Substituted Electron-Withdrawing Group and Application to Air-Stable n-Channel Organic Field Effect Transistor Reviewed International journal

Kenji Tsukamoto, Koji Takagi,* Shusaku Nagano, Mitsuo Hara, Yutaka Ie, Kohtaro Osakada, and Daisuke Takeuchi

J. Mater. Chem. C   7 ( 40 )   12610 - 12618   2019.09

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Ladderization of poly(p-phenylenevinylene) derivative: Synthesis of polycyclic aromatic hydrocarbon polymer by intramolecular oxidative cyclization Reviewed International journal

Koji Takagi* and Yoshihiro Yamada

Polymer   179   121607   2019.09

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Ladderization of Polystyrene Derivatives by Palladium-Catalyzed Polymer Direct Arylation Reviewed International journal

Koji Takagi,* Hidetoshi Tanaka, and Koichiro Mikami*

Polym. Chem.   10 ( 21 )   2647 - 2652   2019.05

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Potentially Helical Imidazole-Containing Conjugated Oligomer: Synthesis, Optical Properties, and Conformation Reviewed International journal

Koji Takagi,* Jun-ya Ohta, Kenta Sugihara, Kanami Okamura, and Yoshihiro Yamada

Polym. J.   51 ( 4 )   389 - 395   2019.04

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Chiral Non-Planar Oligophenylenes bridged by Urea Linkage: Synthesis through Intramolecular Direct Arylation, Chiroptical Behavior, and Theoretical Investigation Reviewed International journal

Koji Takagi,* Yuto Hirano, Koichiro Mikami, Shoko Kikkawa, and Isao Azumaya

Eur. J. Org. Chem.   2019 ( 10 )   2071 - 2080   2019.03

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Creating Elastic Organic Crystals of π-Conjugated Molecules with Bending Mechanofluorochromism and Flexible Optical Waveguide Performances Reviewed International journal

Shotaro Hayashi,* Shun-ya Yamamoto, Daisuke Takeuchi,† Yutaka Ie, and Koji Takagi*

Angew. Chem. Int. Ed.   2018.11

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Structure of Optically Active Oligo(N-substituted-m-benzamide)s bearing Bithiophene Chromophore on the Benzene Ring Reviewed International journal

Koji Takagi,* Yuma Nishikawa, Kana Shimizu, Katsuya Nobuke, Ryohei Yamakado, Shinri Sugimoto, and Yoshihito Inai*

Macromol. Chem. Phys.   219 ( 23 )   1800298   2018.11

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Field-Effect Transistor Application of pi-Extended Lactam-Fused Conjugated Oligomers obtained by the Tandem Direct Arylation Reviewed International journal

Koji Takagi,* Shun-ya Yamamoto, Kenji Tsukamoto, Yuto Hirano, Mitsuo Hara, Shusaku Nagano, Yutaka Ie, and Daisuke Takeuchi

Chem. Eur. J.   24 ( 53 )   14137 - 14145   2018.09

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

ESIPT Emission Behavior of Methoxy-Substituted 2-Hydroxyphenylbenzimidazole Isomers Reviewed International journal

Koji Takagi,* Yoshihiro Yamada, Ryoichi Fukuda,* Masahiro Ehara, and Daisuke Takeuchi

New J. Chem.   42 ( 8 )   5923 - 5928   2018.04

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Solid-State Esterification via Ionic-to-Covalent Bond Transformation in Ionic Molecular Crystals Consisting of Disubstituted Anthracene Anion-Cation Combinations Reviewed International journal

Masato Suzuki,* Takahiro Fujii, Yoko Naito, Kazuhisa Yamoto, Shin-ichi Matsuoka, Koji Takagi, Haruki Sugiyama, and Hidehiro Uekusa

Bull. Chem. Soc. Jpn.   91 ( 3 )   343 - 348   2018.03

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and optical properties of ESIPT-active π-conjugated benzimidazole compounds: Influence of structure rigidification by ring fusion Reviewed International journal

Koji Takagi,* Kaede Ito, Yoshihiro Yamada, Takuya Nakashima, Ryoichi Fukuda, Masahiro Ehara, and Hyuma Masu

J. Org. Chem.   82 ( 23 )   12173 - 12180   2017.12

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Optical Properties of Fused pi-Conjugated Imidazole Compounds Reviewed

Koji Takagi, Kaede Ito, Yoshihiro Yamada, Takuya Nakashima, Ryoichi Fukuda, Masahiro Ehara, and Daisuke Takeuchi

Chem. Lett.   46 ( 9 )   1372 - 1375   2017.09

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Regioselective Halogen-Magnesium Exchange Reaction of Bithiophene Derivative bearing Methoxy and Pyridine Groups at the beta-Position and Kumada Coupling Polymerization Reviewed

Koji Takagi, Ryo Kouchi, and Junpei Kawai

Polym. J.   49 ( 9 )   649 - 654   2017.09

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Halogen-Bonding-Mediated and Controlled Cationic Polymerization of Isobutyl Vinyl Ether: Expanding the Catalytic Scope of 2-Iodoimidazolium Salts Reviewed International journal

Koji Takagi, Koji Yamauchi, and Hiroto Murakata

Chem. Eur. J.   23 ( 40 )   9495 - 9500   2017.06

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Termination Reaction of Living Poly(3-hexylthiophene) using Thiophene Grignard Reagents: Substituent Effect on the Functionalization Reviewed International journal

Koji Takagi, Junpei Kawai, and Ryo Kouchi

Polymer   177   354 - 363   2017.05

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of Polythiophene Derivative bearing Methoxy and Pyridine Groups at the beta-Position and Formation of an Intramolecular Hydrogen Bonding through the Polymer Reaction Reviewed International journal

Koji Takagi, Ryo Kouchi, and Junpei Kawai

Polymer   114   221 - 230   2017.03

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Molecular Design for Tuning Electronic Structure of p-Conjugated Polymers Containing Fused Dithienobenzimidazole Units Reviewed International journal

Koji Takagi,* Tomoharu Kuroda, Masanori Sakaida, and Hyuma Masu

Polymer   107   191 - 199   2016.12

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Optical Properties of p-Conjugated Polymers containing Fused Imidazole Skeleton Reviewed International journal

Koji Takagi,* Takuya Miwa, and Hyuma Masu

Macromolecules   49   2016.12

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Optical Properties of Poly(N-octyl-m-benzamide)s bearing an Oligothiophene Chromophore on the Benzene Ring Reviewed

Koji Takagi,* Yuma Nishikawa, Kana Shimizu, Ryohei Yamakado, and Shinri Sugimoto

Polym. J.   48 ( 5 )   605 - 610   2016.05

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Fused pi-Conjugated Imidazolium Liquid Crystals: Synthesis, Self-Organization, and Fluorescent Properties Reviewed International journal

Koji Takagi, Koji Yamauchi, Seiko Kubota, Shusaku Nagano, Mitsuo Hara, Takahiro Seki, Kazuya Murakami, Yousuke Ooyama, Joji Ohshita, Masaharu Kondo, and Hyuma Masu

RSC Advances   6 ( 11 )   9152 - 9159   2016.01

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Amide-bridged Ladder Poly(p-phenylene): Synthesis by Direct Arylation and π-Stacked Assembly Reviewed International journal

Koji Takagi, Ryota Kato, Shun-ya Yamamoto, and Hyuma Masu

Polym. Chem.   6 ( 38 )   6792 - 6795   2015.08

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and optical properties of imidazole and benzimidazole-based fused pi-conjugated compounds: Influence of substituent, counter anion, and pi-conjugated system Reviewed International journal

Koji Takagi, Kazuma Kusafuka, Yohei Ito, Koji Yamauchi, Kaede Ito, Ryoichi Fukuda, and Masahiro Ehara

J. Org. Chem.   80 ( 14 )   7172 - 7183   2015.07

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Diastereoselective Cyclization of Aminobenzoic Acid Derivative and Chiroptical Properties of Triple-Stranded Helical Bis(phenylethynyl)benzene Reviewed

Ryohei Yamakado, Shin-ichi Matsuoka, Masato Suzuki, Daisuke Takeuchi, Hyuma Masu, Isao Azumaya, and Koji Takagi*

Chem.Commun.   51 ( 26 )   5710 - 5713   2015.02

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/C5CC00945F

Solid-State Polycondensation via Ionic-to-Covalent Bond Transformation to Control Polymer Structure: Preparation of Porphyrin-Based Ladder Polymer Reviewed

Masato Suzuki,* Kohei Yokota, Hiroe Tsuchida, Kazuhisa Yamoto, Masayuki Nagata, Shin-ichi Matsuoka, Koji Takagi, Kohei Johmoto, and Hidehiro Uekusa

ACS Macro Lett   4 ( 2 )   247 - 250   2015.02

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Aggregation of Polythiophene Homopolymer and Block Copolymer in Solution Utilizing the Characteristics of Pyridine at the Side Chain Reviewed

Koji Takagi,* Eiki Kawagita, Ryo Kouchi, and Junpei Kawai

J. Polym. Sci. Part A: Polym. Chem.   52 ( 23 )   3383 - 3389   2014.12

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/pola.27403

Synthesis and Characterization of Polythiophene Derivatives with Nitrogen Heterocycles at the Side Chain Reviewed

Koji Takagi,* Eiki Kawagita, and Ryo Kouchi

J. Polym. Sci. Part A: Polym. Chem.   52 ( 15 )   2166 - 2174   2014.06

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Optoelectronic Properties of Conjugated Polymers Based on a Dithienobenzimidazole Unit in the Main Chain Reviewed

Koji Takagi,* Masanori Sakaida, Kazuma Kusafuka, and Takuya Miwa

J. Polym. Sci., Part A: Polym. Chem.   52 ( 3 )   401 - 409   2014.02

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis, Reaction, and Optical Properties of Cyclic Trimer bearing 9,10-Diphenylanthracene Based on an Aromatic Tertiary Amide Skeleton Reviewed

Ryohei Yamakado, Shin-ichi Matsuoka, Masato Suzuki, Daisuke Takeuchi, Hyuma Masu, Isao Azumaya, and Koji Takagi*

RSC Adv.   4 ( 13 )   6752 - 6760   2014.01

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Optical Properties of Poly(p-benzamide)s bearing Oligothiophene on Amide Nitrogen Atom through Alkylene Spacer Reviewed

Koji Takagi,* Katsuya Nobuke, Yuma Nishikawa, and Ryohei Yamakado

Polym. J.   45 ( 12 )   1171 - 1176   2013.12

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

N-Heterocyclic Carbene-Catalyzed Cyclotetramerization of Acrylates Reviewed

Shin-ichi Matsuoka,* Shoko Namera, Atsushi Washio, Koji Takagi, and Masato Suzuki

Org. Lett.   15 ( 23 )   5916 - 5919   2013.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Experimental Mechanistic Studies of the Tail-to-Tail Dimerization of Methyl Methacrylate Catalyzed by N-Heterocyclic Carbene Reviewed

Terumasa Kato, Yoshiya Ota, Shin-ichi Matsuoka,* Koji Takagi, Masato Suzuki

J. Org. Chem.   78 ( 17 )   8739 - 8747   2013.09

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Helicity Induction in Three pi-Conjugated Chromophores by Planar Chirality of Calixamide Reviewed

Ryohei Yamakado, Koichiro Mikami,* Koji Takagi,* Isao Azumaya,* Shinri Sugimoto, Shin-ichi Matsuoka, Masato Suzuki, Kosuke Katagiri, Masanobu Uchiyama, and Atsuya Muranaka

Chem. Eur. J.   19 ( 36 )   11853 - 11857   2013.08

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Optical Properties of Conjugated Polymers Bearing 1,8-Difunctionalized Carbazole Unit Reviewed

Koji Takagi,* Hidenobu Takao, and Tsuyoshi Nakagawa

Polym. J.   45 ( 4 )   396 - 400   2013.04

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of Green and Blue Fluorescent Ladder-Type Conjugated Imidazolium Compounds Reviewed

Koji Takagi, Yohei Ito, Kazuma Kusafuka, and Masanori Sakaida

Org. Biomol. Chem.   11 ( 14 )   2245 - 2248   2013.03

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

A screw-shaped alignment of pyrene using m-calix[3]amide Reviewed

Ryohei Yamakado, Shin-ichi Matsuoka, Masato Suzuki, Koji Takagi, Kosuke Katagiri, and Isao Azumaya

Tetrahedron   69 ( 5 )   1516 - 1520   2013.01

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Sequential one-pot and three-component reactions of an N-heterocyclic carbene to form 4-(1,2,4-triazol-5-ylidene)pyrrolidine-2,5-diones: a tandem umpolung/annulation sequence via deoxy-Breslow intermediates Reviewed

Shin-ichi Matsuoka, Yusuke Tochigi, Koji Takagi, and Masato Suzuki

Tetrahedron   68 ( 47 )   9836 - 9841   2012.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Preparation of molecular cage by coordination of m-calix[3]amide bearing pyridine with palladium complex Reviewed

Koji Takagi et al

Chem. Lett.   41 ( 3 )   249 - 251   2012.03

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Isomerization of Conjugated Oligomers Containing Azoimidazole Unit Reviewed

Koji Takagi et al

J. Polym. Sci., Part A: Polym. Chem.   49 ( 23 )   4993 - 5000   2011.11

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Organocatalytic head-to-tail dimerization of methacrolein via conjugate addition of methanol: An alcohol activation mechanism proved by electrospray ionization mass spectrometry Reviewed

Shin-ichi Matsuoka et al

Tetrahedron Lett.   52 ( 50 )   6835 - 6838   2011.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Regioselective Grignard Metathesis Reaction of 2,5-Dibromo-3-(6’-hexylpyridine-2’-yl)thiophene and Kumada Coupling Polymerization Reviewed

Koji Takagi et al

J. Polym. Sci., Part A: Polym. Chem.   49 ( 18 )   4013 - 4020   2011.09

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Organocatalytic Tail-to-Tail Dimerization of Olefin: Umpolung of Methyl Methacrylate Mediated by N-Heterocyclic Carbene Reviewed

Shin-ichi Matsuoka et al

Org. Lett.   13 ( 14 )   3722 - 3725   2011.06

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Syntheses of Aliphatic Polycarbonates from 2’- Deoxyribonucleosides Reviewed

Masato Suzuki et al

Biomacromolecules   12 ( 5 )   1449 - 1459   2011.05

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Self-Assembly of Oligothiophene Chromophores by m-Calix[3]amide Scaffold Reviewed

Koji Takagi et al

J. Org. Chem.   76 ( 8 )   2471 - 2478   2011.04

　More details

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

Polycondensation of 4-Octylaminobenzoic Acid Esters Having Bithiophene at 3-Position and Optical Properties of Polymer Reviewed

Katsuya Nobuke, Ryohei Yamakado, and Koji Takagi

Kobunshi Ronbunshu   68 ( 1 )   33 - 38   2011.01

　More details

Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)  

Poly(3-hexylthiophene)-block-poly(3-semifluoroalkylthiophene) for polymer solar cells Reviewed

Ichiko Yamada, Takeshi Toru, Koji Takagi, Yasuhiko Hayashi,* Tetsuo Soga, and Norio Shibata

Int. J. Mol. Sci.   11 ( 12 )   5027 - 5039   2010.12

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Characterization of Nitrogen-Linked Carbazole-Containing Fluorescent Polymers Reviewed

Koji Takagi,* Hidenobu Takao, and Tsuyoshi Nakagawa

J. Polym. Sci., Part A: Polym. Chem. Wiley   48 ( 17 )   3729 - 3735   2010.08

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Poly(ethylene glycol)-Induced Acceleration of Free Radical Polymerization of Methyl Methacrylate: Effects of Highly Viscous Solvent and Kinetic Study Reviewed

Shin-ichi Matsuoka,* Takashi Kikuno, Koji Takagi, and Masato Suzuki

Polym. J. SPSJ   42 ( 5 )   368 - 374   2010.05

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Light-Emitting Properties of Carbazole-Based Copolymers Bearing Cyano-Substituted Arylenevinylene Chromophore Reviewed

Koji Takagi,* Tsuyoshi Nakagawa, and Hidenobu Takao

J. Polym. Sci., Part A: Polym. Chem. Wiley   48 ( 1 )   91 - 98   2010.01

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/pola.23764

Synthesis and Light-Emitting Behavior of Silicon-Bridged Fluorene Copolymers Bearing Oligoarylenevinylene Chromophore Reviewed

Koji Takagi,* Ai Tahara, and Hiroki Kakiuchi

Polym. J. SPSJ   41 ( 9 )   733 - 738   2009.09

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1295/polymj.PJ2009088

Synthesis of Imidazole-Containing Conjugated Polymers Bearing Phenol Unit as Side Group and Excited State Intramolecular Proton Transfer-Mediated Fluorescence Reviewed

Koji Takagi,* Kenta Sugihara, and Takato Isomura

J. Polym. Sci., Part A: Polym. Chem. Wiley   47 ( 18 )   4822 - 4829   2009.09

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/pola.23539

Polymerization of Branched Thiophene Monomers and Optoelectronic Properties of Materials Reviewed

Koji Takagi,* Chikako Torii, and Yusuke Yamashita

J. Polym. Sci., Part A: Polym. Chem. Wiley   47 ( 12 )   3034 - 3044   2009.06

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/pola.23399

Polymerization of Fluorene-Based Monomers Modified with Thiavinylidene Structure at 9-Position and Their Optical Properties Reviewed

Koji Takagi,* Shinri Sugimoto, Manabu Mitamura, Shin-ichi Matsuoka, and Masato Suzuki

Synth. Met.   159 ( 3-4 )   228 - 233   2009.02

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.synthmet.2008.09.009

Tropolone-terminated Oligomeric Fluorophores Having Responsive Properties to External Environment Reviewed

Koji Takagi,* Kazuhiro Saiki, Hirokazu Hayashi, Hiroyasu Ohsawa, Shin-ichi Matsuoka, and Masato Suzuki

Bull. Chem. Soc. Jpn. CSJ   82 ( 2 )   236 - 241   2009.02

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/bcsj.82.236

Synthesis of Carbazole-Based Light Emitting Polymers Incorporating 2,5-Bis(phenylethenyl)-4-decyloxyanisole as Collateral Fluorophore Reviewed

Koji Takagi,* Tsuyoshi Nakagawa, and Hidenobu Takao

J. Polym. Sci., Part A: Polym. Chem. Wiley   46 ( 24 )   8141 - 8148   2008.12

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/pola.23111

Conjugated Oligomers Containing Imidazole in Main Chain with Intramolecular Hydrogen Bonding Reviewed

Koji Takagi,* Kenta Sugihara, Junya Ohta, Yasuo Yuki, Shin-ichi Matsuoka, and Masato Suzuki

Polym. J. SPSJ   40 ( 7 )   614 - 621   2008.07

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1295/polymj.PJ2008043

Polymeric Oligothiophene Fluorophores Spatially Isolated by Spirobifluorene and Their Emission Properties Reviewed

Koji Takagi,* Masaki Momiyama, Junya Ohta, Yasuo Yuki, Shin-ichi Matsuoka, and Masato Suzuki

Macromolecules ACS   40 ( 24 )   8807 - 8811   2007.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/ma071410b

Synthesis and Optical Properties of Fluorene-Based Polymers Incorporating Organosilicon Unit Reviewed

Koji Takagi,* Hiroki Kakiuchi, Yasuo Yuki, and Masato Suzuki

J. Polym. Sci., Part A: Polym. Chem. Wiley   45 ( 21 )   4786 - 4794   2007.09

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/pola.22210

Synthesis of Tropolone-Containing Conjugated Polymers and Their Optical Properties Reviewed

Koji Takagi,* Kazuhiro Saiki, Kousuke Mori, Yasuo Yuki, Shin-ichi Matsuoka, and Masato Suzuki

Polym. J. SPSJ   39 ( 8 )   813 - 821   2007.08

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1295/polymj.PJ2007003

Synthesis of Poly(triazinylstyrene) Containing Nitrogen-Based Ligand and Function as Metal Ion Adsorbent and Oxidation Catalyst Reviewed

Koji Takagi,* Satoshi Miwa, and Yasuo Yuki

React. Funct. Polym.   66 ( 12 )   1718 - 1724   2006.12

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.reactfunctpolym.2006.07.005

主鎖にケイ素を導入したフルオレン系発光ポリマーの合成と電気光物性 Reviewed

高木幸治 垣内宏樹 鈴木将人

高分子論文集 SPSJ   63 ( 10 )   663 - 669   2006.10

　More details

Language：Japanese   Publishing type：Research paper (scientific journal)  

オリゴエチレンオキシド鎖を有するトリアジン系高分子固体電解質の合成 Reviewed

高木幸治 村松正樹 国貞秀雄 結城康夫

高分子論文集 SPSJ   62 ( 5 )   208 - 213   2005.06

　More details

Language：Japanese   Publishing type：Research paper (scientific journal)  

Synthesis and Photophysical Properties of Polyfluorenes Bearing Silicon-Based Functional Groups Reviewed

Koji Takagi,* Satoshi Kunii, and Yasuo Yuki

J. Polym. Sci. Part A: Polym. Chem. Wiley   43 ( 10 )   2119 - 2127   2005.05

　More details

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/pola.20689

Tropone-Containing Conjugated Polymer, Part V Influence of Fused Benzene Ring upon Photophysical Properties Reviewed

Koji Takagi,* Kosuke Mori, Hideo Kunisada, and Yasuo Yuki

Polym. Bull. Springer   52 ( 2 )   125 - 132   2004.08

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Coordination of Transition Metal Dithiolate Complex to 2,2’-Bipyridine-Based pi-Conjugated Polymer Reviewed

Shin-ichiro Kato, Koji Takagi,* Kirito Suzuki, Takatoshi Kinoshita, and Yasuo Yuki

J. Polym. Sci. Part A: Polym. Chem. Wiley   42 ( 11 )   2631 - 2639   2004.06

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Tropone-Containing pi-Conjugated Polymers: Annulation of Tropone onto Benzene Ring in the Conjugated Polymer Reviewed

Naomi Nishioka, Koji Takagi,* Takatoshi Kinoshita, Hideo Kunisada, and Yasuo Yuki

J. Polym. Sci. Part A: Polym. Chem. Wiley   42 ( 5 )   1208 - 1215   2004.03

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Allylnickel-Catalyzed Living Coordination Polymerization of Allenes with Ester Functionality Reviewed

Koji Takagi, Ikuyoshi Tomita,* and Takeshi Endo

Polym. Bull. Springer   50 ( 5-6 )   335 - 342   2003.07

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of Star Polystyrene by Radical Polymerization with 1,2,4,5-Tetrakis(p-tert-butylphenylselenomethyl)benzene as a Novel Photoiniferter Reviewed

Tae Seok Kwon,* Koji Takagi, Hideo Kunisada, and Yasuo Yuki

Eur. Polym. J.   39 ( 7 )   1437 - 1441   2003.07

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Acid-Doping to Tropone-Containing Conjugated Polymer Reviewed

Koji Takagi,* Kosuke Mori, Takatoshi Kinoshita, Hideo Kunisada, and Yasuo Yuki

Chem. Lett. CSJ   32 ( 6 )   552 - 553   2003.06

　More details

Language：English   Publishing type：Research paper (scientific journal)  

The Adsorption of Guest Molecule onto Self-Assembled Monolayer of alpha-Helical Polypeptide Reviewed

Issei Aoki, Naomi Nishioka, Koji Takagi, Yasuo Yuki, and Takatoshi Kinoshita*

Trans. of Mater. Res. Soc. Jpn.   27 ( 3 )   559 - 562   2002.12

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of Diblock Copolymers by End Functional Polystyrene Containing Phenylseleno Groups as Polymeric Photoiniferter Reviewed

Tae Seok Kwon,* Koji Takagi, Hideo Kunisada, and Yasuo Yuki

J. Macromol. Sci., Pure and Appl. Chem.   A39 ( 9 )   991 - 1006   2002.09

　More details

Language：English   Publishing type：Research paper (scientific journal)  

pi-Conjugated Oligomers Containing Tropone in the Main Chain: Synthesis, Characterization, and Optical Properties Reviewed

Koji Takagi,* Yukimi Nishikawa, Naomi Nishioka, Hideo Kunisada, and Yasuo Yuki

J. Polym. Sci. Part A: Polym. Chem. Wiley   40 ( 22 )   3927 - 3937   2002.03

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of PPV-Based Conjugated Oligomer Containing Tropone in Main Chain Reviewed

Koji Takagi,* Yukimi Nishikawa, Hideo Kunisada, and Yasuo Yuki

Chem. Lett. CSJ   2001 ( 12 )   1244 - 1245   2001.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Radical Polymerization of Methyl Methacrylate with Diphenyl Diselenide under Thermal or Photoirradiational Conditions Reviewed

Tae Seok Kwon, Kirito Suzuki, Koji Takagi, Hideo Kunisada, and Yasuo Yuki*

J. Macromol. Sci., Pure and Appl. Chem.   A38 ( 5-6 )   591 - 604   2001.05

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of ABA Type Triblock Copolymers by Radical Polymerization with 1,4-Bis(p-tert-butylphenylselenomethyl)benzene as a Photoiniferter Reviewed

Tae Seok Kwon, Koji Takagi, Hideo Kunisada, and Yasuo Yuki*

J. Macromol. Sci., Pure and Appl. Chem.   A38 ( 5-6 )   605 - 626   2001.05

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Triazine Dendrimers by Divergent and Convergent Methods Reviewed

Koji Takagi,* Tatsuya Hattori, Hideo Kunisada, and Yasuo Yuki

J. Polym. Sci. Part A: Polym. Chem. Wiley   38 ( 24 )   4385 - 4395   2000.12

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of Macromonomer Using End Functional Polystyrene Prepared from p-Methoxybenzyl p-Trimethylsilylphenyl Selenide as Photoiniferter Reviewed

Tae Seok Kwon, Koji Takagi, Hideo Kunisada, and Yasuo Yuki*

J. Macromol. Sci., Pure and Appl. Chem.   A37 ( 11 )   1461 - 1473   2000.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of Branched Polystyrene by Photopolymerization of Selenium-Containing Styrene Monomer Reviewed

Koji Takagi,* Yukimi Nishikawa, Tae Seok Kwon, Hideo Kunisada, and Yasuo Yuki

Polym. J. SPSJ   32 ( 11 )   970 - 973   2000.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of Triazine Dendrimers Reviewed

Koji Takagi,* Kazuhito Uchikura, Tatsuya Hattori, Hideo Kunisada, and Yasuo Yuki

Kobunshi Ronbunshu   57 ( 10 )   646 - 651   2000.10

　More details

Language：Japanese   Publishing type：Research paper (scientific journal)  

Synthesis and Polymerization of Isopropenyl-1,3,5-triazines Carrying a Long Alkyl Chain with Oxyethylene Spacer and the Side Chains Crystallization of Obtained Comb-like Polymers Reviewed International journal

Koji Takagi et al

J. Macromol. Sci., Pure and Appl. Chem.   A38 ( 5-6 )   417 - 427   2000.04

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Controlled Radical Polymerization of Styrene Utilizing Excellent Radical Capturing Ability of Diphenyl Ditelluride Reviewed

Koji Takagi,* Akimasa Soyano, Tae Seok Kwon, Hideo Kunisada, and Yasuo Yuki

Polym. Bull. Springer   43 ( 2-3 )   143 - 150   1999.12

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis and Radical Polymerization of p-Phenylselenomethylstyrene and Application to Graft Copolymers Reviewed

Tae Seok Kwon, Shuji Kondo, Koji Takagi, Hideo Kunisada, and Yasuo Yuki*

Polym. J. SPSJ   31 ( 6 )   483 - 487   1999.06

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Radical Polymerization of p-Substituted Styrene with Benzyl Phenyl Selenide as Photoiniferter Reviewed

Tae Seok Kwon, Hiromitsu Ochiai, Shuji Kondo, Koji Takagi, Hideo Kunisada, and Yasuo Yuki*

Polym. J. SPSJ   31 ( 5 )   411 - 417   1999.05

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Synthesis of Telechelic Polystyrene by Radical Polymerization using 1,4-Bis(p-tert-butylphenylselenomethyl)benzene as a Photoiniferter Reviewed

Tae Seok Kwon, Sadanori Kumazawa, Shuji Kondo, Koji Takagi, Hideo Kunisada, Yasuo Yuki*

J. Macromol. Sci., Pure and Appl. Chem.   A35 ( 12 )   1895 - 1913   1998.12

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Living Coordination Polymerization of N-Allenylamides by pi-Allylnickel Catalysts Reviewed

Koji Takagi, Ikuyoshi Tomita, and Takeshi Endo*

Macromolecules ACS   31 ( 20 )   6741 - 6747   1998.09

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Living Coordination Polymerization of Alkoxyallenes by pi-Allylnickel Catalyst II -Effect of Anionic Ligands on Polymerization Behavior and Polymer Structure- Reviewed

Koji Takagi, Ikuyoshi Tomita, Yoshiyuki Nakamura, and Takeshi Endo*

Macromolecules ACS   31 ( 9 )   2779 - 2783   1998.04

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Single-feed One-step Block Copolymerization of n-Octyloxyallene with Phenylallene using pi-Allylnickel as Initiator Reviewed

Koji Takagi, Ikuyoshi Tomita, and Takeshi Endo*

Chem. Commun. RSC   1998 ( 6 )   681 - 682   1998.03

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Block Copolymerization of Alkoxyallenes with Phenylallene by the Living Coordination System with pi-Allylnickel Catalyst Reviewed

Koji Takagi, Ikuyoshi Tomita, and Takeshi Endo*

Polym. Bull. Springer   39 ( 6 )   685 - 692   1997.12

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Design and Synthesis of Polymerizable Cumulated Double Bond System. -Living Coordination Polymerization of Alkylallenes by pi-Allylnickel Catalyst- Reviewed

Takeshi Endo,* Koji Takagi, and Ikuyoshi Tomita

Tetrahedron Wiley   53 ( 45 )   15187 - 15196   1997.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Block Copolymerization of Allene Derivatives with Isocyanides by the Coordination Polymerization with pi-Allylnickel Catalyst Reviewed

Ikuyoshi Tomita, Masanori Taguchi, Koji Takagi, and Takeshi Endo*

J. Polym. Sci., Part A: Polym. Chem. Wiley   35 ( 3 )   431 - 437   1997.11

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Living Coordination Polymerization of Alkylallenes by pi-Allylnickel Catalyst: Observation of an Extremely High Polymerizability of 1,2-Cyclononadiene Reviewed

Koji Takagi, Ikuyoshi Tomita, and Takeshi Endo*

Chem. Lett. BCSJ   1997 ( 11 )   1187 - 1188   1997.10

　More details

Language：English   Publishing type：Research paper (scientific journal)  

A Novel Living Coordination Polymerization of Phenylallene Derivatives by pi-Allylnickel Catalyst Reviewed

Koji Takagi, Ikuyoshi Tomita, and Takeshi Endo*

Macromolecules ACS   30 ( 24 )   7386 - 7390   1997.02

　More details

Language：English   Publishing type：Research paper (scientific journal)  

A Novel Living Coordination Polymerization of Alkoxyallenes by a pi-Allylnickel Catalyst I Reviewed

Ikuyoshi Tomita, Yukiko Kondo, Koji Takagi, and Takeshi Endo*

Acta Polym.   46   432 - 436   1995.07

　More details

Language：English   Publishing type：Research paper (scientific journal)  

Block Copolymerization of Alkoxyallenes by the Living Coordination System with a pi-Allylnickel Catalyst Reviewed

Ikuyoshi Tomita, Toru Abe, Koji Takagi, and Takeshi Endo*

J. Polym. Sci., Part A: Polym. Chem. Wiley   33 ( 14 )   2487 - 2492   1995.06

　More details

Language：English   Publishing type：Research paper (scientific journal)  

A Novel Living Coordination Polymerization of Methoxyallene by pi-Allylnickel Catalyst Reviewed

Ikuyoshi Tomita, Yukiko Kondo, Koji Takagi, and Takeshi Endo*

Macromolecules ACS   27 ( 15 )   4413 - 4414   1994.07

　More details

Language：English   Publishing type：Research paper (scientific journal)