藤井 孝太郎 

東京工業大学 理学院 化学系 エネルギーコース 助教

略歴

  • 2009年3月 東京工業大学 博士課程修了 博士(理学)
  • 2009年4月 Cardiff大学 博士研究員
  • 2010年4月 東京工業大学 産学官連携研究員
    (理工学研究科 物質科学専攻 植草秀裕研究室)
  • 2012年4月 東京工業大学 助教
    ( 理学院化学系エネルギーコース(旧 理工学研究科 物質科学専攻) 八島正知研究室)

受賞歴

  • 2010年 平成21年度手島精一記念研究賞(博士論文賞)
  • 2010年 第19回有機結晶シンポジウム優秀講演賞
  • 2011年 2011年度結晶学会ポスター賞
  • 2014年 平成26年度日本結晶学会進歩賞

Publications

2017

Crystal Structure, Electron Density and Characterization of Visible-Light Responsive Photocatalysts, (BaTaO2N)1−x(SrWO2N)x Solid Solutions
Keisuke Hibino, Masatomo Yashima, Takayoshi Oshima, Kotaro Fujii, Kazuhiko Maeda
Crystal Structure and Oxide-Ion Conductivity of Ba1+xNd1−xInO4−x/2
Masahiro Shiraiwa, Kotaro Fujii, Yuichi Esaki, Su Jae Kim, Seongsu Lee, Masatomo Yashima
J. Electrochem. Soc., in press(), , ().
Crystal-structure and electron-density analyses of the perovskite-type oxynitrides BaNbO2N and SrNbO2N through synchrotron X-ray powder diffraction
Kotaro Fujii, Kazuho Shimada, Masatomo Yashima
New Oxide-Ion Conductor SrYbInO4 with Partially Cation-Disordered CaFe2O4-Type Structure
Ayaka Fujimoto, Masatomo Yashima, Kotaro Fujii, James R. Hester
Synthesis, Structure and Photoluminescence of a Novel Oxynitride BaYSi2O5N Activated by Eu2+ and Ce3+
Makoto Kobayashi, Takuya Yasunaga, Hironori Sato, Hideki Kato, Kotaro Fujii, Masatomo Yashima, Masato Kakihana

2016

Control of the reversibility during boronic ester formation: application to the construction of ferrocene dimers and trimers
Kosuke Ono, Yohei Tohyama, Tatsuhiro Uchikura, Yuji Kikuchi, Kotaro Fujii, Hidehiro Uekusa and Nobuharu Iwasawa
Hydrothermal Synthesis, Crystal Structure, and Superconductivity of a Double-Perovskite Bi Oxide
Mirza H. K. Rubel, Takahiro Takei, Nobuhiro Kumada, M. Mozahar Ali, Akira Miura, Kiyoharu Tadanaga, Kengo Oka, Masaki Azuma, Masatomo Yashima, Kotaro Fujii, Eisuke Magome, Chikako Moriyoshi, Yoshihiro Kuroiwa, James R. Hester, and Maxim Avdeev

2015

Improved oxide-ion conductivity of NdBaInO4 by Sr doping
Kotaro Fujii, Masahiro Shiraiwa, Yuichi Esaki, Masatomo Yashima, Su Jae Kim, Seongsu Lee
Structure Determination from Powder X-ray Diffraction Data of Black Azo (Hydrazone) Pigments
Junji Otani, Michio Matsumura, Kotaro Fujii, Hidehiro Uekusa
Structural Origin of the Anisotropic and Isotropic Thermal Expansion of K2NiF4-Type LaSrAlO4 and Sr2TiO4
Keishi Kawamura, Masatomo Yashima, Kotaro Fujii, Kazuki Omoto, Keisuke Hibino, Shuntaro Yamada, James R. Hester, Maxim Avdeev, Ping Miao, Shuki Torii, Takashi Kamiyama
新しい層状構造を有する酸化物イオン伝導体の発見
八島正知, 藤井孝太郎

2014

Defect induced sodium disorder and ionic conduction mechanism in Na1.82Mg1.09P2O7
Guandong Liu, Shin-ichi Nishimura, Sai Cheong Chung, Kotaro Fujii, Masatomo Yashima, Atsuo Yamada
酸化物イオン伝導体の新構造ファミリーNdBaInO4を発見
藤井孝太郎, 八島正知
新構造ファミリーの酸化物イオン伝導性材料を発見
藤井 孝太郎,八島 正知
New Perovskite-Related Structure Family of Oxide-Ion Conducting Materials NdBaInO4
Kotaro Fujii, Yuichi Esaki, Kazuki Omoto, Masatomo Yashima, Akinori Hoshikawa, Toru Ishigaki, James R. Hester
Diffusion Path and Conduction Mechanism of Protons in Hydroxyapatite
Masatomo Yashima, Naoyuki Kubo, Kazuki Omoto, Hirotaka Fujimori, Kotaro Fujii, Kenji Ohoyama

2013

Structural understanding of solid-state photodimerization reactions of cinnamic amide derivatives in terms of reaction cavities – color developer for thermosensitive paper
Satoshi Kodama, Kohei Johmoto, Akiko Sekine, Kotaro Fujii, Hidehiro Uekusa
Experimental visualization of the Bi–O covalency in ferroelectric bismuth ferrite (BiFeO3) by synchrotron X-ray powder diffraction analysis
Kotaro Fujii, Hiroki Kato, Kazuki Omoto, Masatomo Yashima, Jun Chen, Xianran Xing
Solid-State Hydration/Dehydration of Erythromycin A Investigated by ab Initio Powder X-ray Diffraction Analysis: Stoichiometric and Nonstoichiometric Dehydrated Hydrate
Kotaro Fujii, Masahide Aoki, Hidehiro Uekusa
Reversible Solid State Redox of an Octacyanometallate-Bridged Coordination Polymer by Electrochemical Ion Insertion/Extraction
Masashi Okubo, Koichi Kagesawa, Yoshifumi Mizuno, Daisuke Asakura, Eiji Hosono, Tetsuichi Kudo, Haoshen Zhou, Kotaro Fujii, Hidehiro Uekusa, Shin-ichi Nishimura, Atsuo Yamada, Atsushi Okazawa, Norimichi Kojima

2012

Mechanism of Dehydration-Hydration Processes of Lisinopril Dihydrate Investigated by ab Initio Powder X-ray Diffraction Analysis
Kotaro Fujii, Hidehiro Uekusa, Naoko Itoda, Etsuo Yonemochi, Katsuhide Terada
Cocrystallization and amorphization induced by drug-excipient interaction improves the physical properties of acyclovir
Takaaki Masuda, Yasuo Yoshihashi, Etsuo Yonemochi, Kotaro Fujii, Hidehiro Uekusa, Katsuhide Terada
Guest-induced self-assembly of a macrocyclic boronic ester containing diarylethene units: enhancement of photoresponsivity
Nobuharu Iwasawa, Hiroki Takahagi, Kosuke Ono, Kotaro Fujii, Hidehiro Uekusa

2011

Structure Determination from Powder X-ray Diffraction Data of a New Polymorph of a High-Density Organic Hydrate Material, with an Assessment of Hydrogen-Bond Disorder by Rietveld Refinement
Gin Keat Lim, Kotaro Fujii, Kenneth D. M Harris, David C. Apperley
Reversible Color Switching of an Organic Crystal Induced by Organic Solvent Vapors
Kotaro Fujii, Aya Sakon, Akiko Sekine, Hidehiro Uekusa
連載企画 有機粉末構造解析をはじめよう! 「試料準備から測定まで」
藤井 孝太郎、植草 秀裕
連載企画 有機粉末構造解析をはじめよう! 「粉末未知結晶構造解析の紹介」
植草 秀裕、藤井 孝太郎
Cooperativity in Solid-State Squaramides
Rafel Prohens, Anna Portell, Cristina Puigjaner, Salvador Tomas, Kotaro Fujii, Kenneth D. M. Harris, Xavier Alcobe, Merce Font-Bardia, Rafael Barbas
Supramolecular Networks in Crystalline Inclusion Complexes Formed from a New Host: 2,2-Bis, 4-hydroxy-3-phenylphenyl-1H-indene-1,3, 2H-dione
Kenta Kasugai, Suzumi Hashimoto, Kazunori Imai, Aya Sakon, Kotaro Fujii, Hidehiro Uekusa, Naoto Hayashi, Keiji Kobayashi
Structural Chemistry of a New Chiral Anhydrous Phase of Ru, bipy3, ClO4 2 Established from Powder X-ray Diffraction Analysis
Eugene Y. Cheung, Kotaro Fujii, Fang Guo, Kenneth D. M. Harris, Sayoko Hasebe, Reiko Kuroda
Potential of synchrotron X-ray powder diffractometry for detection and quantification of small amounts of crystalline drug substances in pharmaceutical tablets
Hiroyuki Yamada, Katsuhiko Masuda, Takayuki Ishige, Kotaro Fujii, Hidehiro Uekusa, Keiko Miura, Etsuo Yonemochi, Katsuhide Terada
Exploiting powder X-ray diffraction for direct structure determination in structural biology: The P2X4 receptor trafficking motif YEQGL
Kotaro Fujii, Mark T. Young, Kenneth D.M. Harris
Metastable polymorphic form of isopropylbenzophenone derivative directly obtained by the solid-state photoreaction investigated by ab initio powder X-ray diffraction analysis
Kotaro Fujii, Hidehiro Uekusa, Michitaro Fukano,Hideko Koshima
粉末結晶解析を用いた溶媒蒸気による多形転移現象の解析
藤井孝太郎、植草 秀裕
化学工業, 64(4), 262-268, (2011).
In situ observation and mechanistic elucidation of metastable colored species in crystalline state photochromism of trans-biindenylidenedione
Kotaro Fujii, Kumiko Aruga, Akiko Sekine, Hidehiro Uekusa, Katsuya Sohno, Koichi Tanaka
Study of the Pseudo-Crystalline Transformation from Form I to Form II of Thiamine Hydrochloride , Vitamin B1
Katsuhiko Masuda, Takayuki Ishige, Hiroyuki Yamada, Kotaro Fujii, Hidehiro Uekusa, Keiko Miura, Etsuo Yonemochi, Katsuhide Terada

2010

Cocrystalline phase transformation of binary mixture of trimethoprim and sulfamethoxazole by slurry technique
Erizal Zaini, Yeyet C. Sumirtapura, Sundani N. Soewandhi, Auzal Halim, Hidehiro Uekusa, Kotaro Fujii
Asian Journal of Pharmaceutical and Clinical Research, 3(4), 26-29, (2010).
Direct structure elucidation by powder X-ray diffraction of a metal-organic framework material prepared by solvent-free grinding
Kotaro Fujii, Ana Lazuen Garay, Janeen Hill, Elena Sbircea, Zhigang Pan, Mingcan Xu, David C. Apperley, Stuart L. James, Kenneth D. M. Harris
Potassium clavulanate
Kotaro Fujii, Kazuyuki Toyota, Akiko Sekine, Hidehiro Uekusa, Ilma Nugrahani, Sukmadjaja Asyarie, N. Sundani Soewandhi, Slamet Ibrahim
Acta Cryst., E66(8), m985-m986, (2010).
Arrays of P=O Dipoles As a Recurrent Structural Motif in Bis-Diphenylphosphine Oxides, Established from Powder X-ray Diffraction
Gin Keat Lim, Zhongfu Zhou, Kotaro Fujii, Patrizia Calcagno, Emilio Tedesco, Simon J. Kitchin, Benson M. Kariuki, Douglas Philp, Kenneth D. M Harris
Cryst. Growth Des., 10(8), 3814-3818, (2010).
A Solid-State Dehydration Process in an Organic Material Associated with Substantial Hydrogen-Bond Reorganization, Investigated by Powder X-ray Diffraction
Javier Marti-Rujas, Anabel Morte-Rodenas, Fang Guo, Nigel Thomas, Kotaro Fujii, Benson M. Kariuki, Kenneth D. M Harris
Selective transformation pathways between crystalline forms of an organic material established from powder X-ray diffraction analysis
Kotaro Fujii, Yasunari Ashida, Hidehiro Uekusa, Fang Guo, Kenneth D. M. Harris
Chem. Commun., 46(24), 4264-4266, (2010).
Hexaradialenes by Successive Ring Openings of Tris, alkoxytricyclobutabenzenes: Synthesis and Characterization
Shinya Shinozaki, Toshiyuki Hamura, Yousuke Ibusuki, Kotaro Fujii, Hidehiro Uekusa, Keisuke Suzuki
Angew. Chem. Int. Ed., 49(1), 3026-3029, (2010).
Physicochemical Understanding of Polymorphism and Solid-State Dehydration/Rehydration Processes for the Pharmaceutical Material Acrinol, by Ab Initio Powder X-ray Diffraction Analysis and Other Techniques
Kotaro Fujii, Hidehiro Uekusa, Naoko Itoda, Gen Hasegawa, Etsuo Yonemochi, Katsuhide Terada, Zhigang Pan, Kenneth D. M. Harris
J. Phys. Chem. C, 114(1), 580-586, (2010).

2009

Partial ferromagnetic ordering and indirect exchange interaction in the spatially anisotropic kagome antiferromagnet Cs2Cu3CeF12
T. Amemiya, M. Yano, K. Morita, I. Umegaki, T. Ono, H. Tanaka, K. Fujii, H Uekusa
Phys. Rev. B, 80(10), 100406/1-100406/4, (2009).
Dihydrochalcone Designed from Methylophiopogonanone B Strongly Inhibits Hypoxia-inducible Factor , HIF-1α Activity
Mikio Fujii, Kiyoshi Egawa, Yasuaki Hirai, Masato Kondo, Kotaro Fujii, Hidehiro Uekusa, Hiroyuki Akita, Kiyoshi Nose, Kazuo Toriizuka, Yoshiteru Ida
Heterocycles, 78(8), 2061-2065, (2009).
Magnetic susceptibilities in a family of S = 1/2 kagome antiferromagnets
T. Ono, K. Morita, M. Yano, H. Tanaka, K. Fujii, H. Uekusa, Y. Narumi, K Kindo
Phys. Rev. B, 79(17), 174407/1-174407/11, (2009).
Chiral Tetraazamacrocycles Having Four Pendant-Arms
Seiji Kamioka, Takashi Takahashi, Susumu Kawauchi, Hiroaki Adachi, Yusuke Mori, Kotaro Fujii, Hidehiro Uekusa, Takayuki Doi
Org. Lett., 11(11), 2289-2292, (2009).
Performance of the micro-PIC gaseous area detector in small-angle X-ray scattering experiments.
Kaori Hattori, Ken'ichi Tsuchiya, Kazuki Ito, Yoko Okada, Kotaro Fujii, Hidetoshi Kubo, Kentaro Miuchi, Masaki Takata, Toru Tanimori, Hidehiro Uekusa
J. Synch. Rad., 16(2), 231-236, (2009).
Reevaluation of solubility of tolbutamide and polymorphic transformation from Form I to unknown crystal form
Gen Hasegawa, Takao Komasaka, Rui Bando, Yasuo Yoshihashi, Etsuo Yonemochi, Kotaro Fujii, Hidehiro Uekusa, Katsuhide Terada
Int. J. Pharm., 369(1-2), 12-18, (2009).
Vapor Induced Crystalline Transformation Investigated by ab initio Powder X-ray Diffraction Analysis.
Kotaro Fujii, Yasunari Ashida, Hidehiro Uekusa, Shinya Hirano, Shinji Toyota, Fumio Toda, Zhigang Pan, Kenneth D. M. Harris
Cryst. Growth & Des., 9(2), 1201-1207, (2009).

2008

粉末X線結晶構造解析で解明する5-メチル-2-ピリドン共結晶の光反応性と転移現象
藤井 孝太郎, 植草 秀裕
日本結晶学会誌, 50(6), 335-340, (2008).
Singlet ground state and spin gap in S = 1/2 Kagome antiferromagnet Rb2Cu3SnF12.
Katsuhiro Morita, Midori Yano, Toshio Ono, Hidekazu Tanaka, Kotaro Fujii, Hidehiro Uekusa, Yasuo Narumi, Koichi Kindo
J. Phys. Soc. Jpn., 77(4), 043707/1-043707/4, (2008).
Single-crystal-to-single-crystal photocyclization of 4-, 2,4,6-triisopropylbenzoylbenzoic acid in the salt crystal with , S-phenylethylamine.
Hideko Koshima, Yuya Ide, Michitaro Fukano, Kotaro Fujii, Hidehiro Uekusa
Tetrahedron Lett., 49(28), 4346-4348, (2008).

2007

粉末X線回折データを用いる有機化合物の結晶構造解析
津江 広人,堀口 雅弘,田村 類,藤井 孝太郎,植草 秀裕
有機合成化学協会誌, 65(12), 1203-1212, (2007).

2006

Multiple pentafluorophenylation of 2,2,3,3,5,6,6-heptafluoro-3,6-dihydro-2H-1,4-oxazine with an organosilicon reagent: NMR and DFT structural analysis of oligo, perfluoroaryl compounds.
Masakazu Nishida, Haruhiko Fukaya, Yoshio Hayakawa, Taizo Ono, Kotaro Fujii, Hidehiro Uekusa
Helv. Chim. Acta, 89(11), 2671-2685, (2006).
Solid-state phase transition of an inclusion complex of 5-methyl-2-pyridone with 1,3,5-benzenetricarboxylic acid.
Shinya Hirano, Shinji Toyota, Fumio Toda, Kotaro Fujii, Hidehiro Uekuasa
Angew. Chem. Int. Ed., 45(36), 6013-6016, (2006).
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