藤田正博

フジタマサヒロ (Fujita Masahiro)

基本情報

所属: 上智大学理工学部物質生命理工学科教授

学位: 博士（工学）(2002年3月東京農工大学)

連絡先: masahi-fsophia.ac.jp
通称等の別名: 吉澤
研究者番号: 50433793
J-GLOBAL ID: 200901014332520864
researchmap会員ID: 6000003382

柔粘性結晶の基礎物性の理解および基礎知見の集積を主な目的として、柔粘性結晶研究会を設立した。本研究会が中心となって、柔粘性結晶の研究を活性化させ、柔粘性結晶が様々な分野で大きく羽ばたくことを期待して活動している。

(研究テーマ)
柔粘性イオン結晶（プラスチッククリスタル）を用いた固体電解質の開発

イオン液体を用いたセルロース誘導体およびセルロースゲルの作製と評価

研究キーワード

研究分野

ナノテク・材料 / 高分子化学 /

受賞

論文

198

Capacitive deionization for sustainable water desalination: Advances in electrode materials, mechanistic pathways, and system-level optimization

Abdelrahman K.A. Khalil, Yeit Haan Teow, Masahiro Yoshizawa-Fujita, Mohd Sobri Takriff, Abdul Latif Ahmad, Muataz Ali Atieh, Khalil Abdelrazek Khalil

Journal of Environmental Chemical Engineering 13(5) 118859-118859 2025年10月査読有り
Symmetrical-branched pyrrolidinium ionic plastic crystal electrolytes: Synthesis and sodium-ion battery potential

Fatihah Najirah Jumaah, Yoshifumi Hirotsu, Morgan L. Thomas, Masahiro Yoshizawa-Fujita

Electrochimica Acta 534 146549-146549 2025年9月査読有り招待有り最終著者責任著者
Zwitterion-enhanced performance of pyrrolidinium-based ionic liquid electrolytes as sodium-ion conductors

Mina Yamaguchi, Masaya Sato, Yuko Takeoka, Masahiro Rikuakwa, Masahiro Yoshizawa-Fujita

527 146269-146269 2025年7月査読有り招待有り最終著者責任著者
Nuclear magnetic resonance study of the relationship between phase behaviour and reorientational and transrational dynamics in N,N-diethylpyrrolidinium bis(fluorosulfonyl)amide with a plastic crystal phase

Keiko Nishikawa, Kozo Fujii, Masahiro Yoshizawa-Fujita

27(28) 15126-15136 2025年7月査読有り最終著者責任著者
(110)-Oriented Asymmetric Phenylene Diammonium-Based Quasi-Two-Dimensional Perovskites for Solar Cell Applications

Daizo Hishida, Towhid H. Chowdhury, Rei Shimono, Akinori Saeki, Genya Uzurano, Akihiko Fujii, Masahiro Yoshizawa-Fujita, Masahiro Rikukawa, Yuko Takeoka

9(8) 5738-5744 2025年5月12日査読有り
Enhanced ion-transport characteristics of pyrrolidinium-based electrolytes with Mg(FSA)2

Yoshifumi Hirotsu, Mizuki Kimura, Shinkoh Nanbu, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa-Fujita

Physical Chemistry Chemical Physics 27(26) 13826-13835 2025年5月査読有り最終著者責任著者
Mitigating low-dimensional phases and defects with methylammonium chloride in high-performance Dion–Jacobson quasi-2D tin perovskite solar cells with power conversion efficiency over 6%

Chunqing Li, Towhid H. Chowdhury, Masahiro Yoshizawa-Fujita, Masahiro Rikukawa, Masatoshi Yanagida, Yasuhiro Shirai, Yuko Takeoka

Chemical Communications 61(35) 6462-6465 2025年4月査読有り
A Simple Regeneration Process Using a CO₂‐Switchable‐Polarity Solvent for Cellulose Hydrogels

Arata Matsui, Deandra Ayu Putri, Morgan L. Thomas, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa‐Fujita

ChemSusChem 18(6) e202401848 2025年3月15日査読有り最終著者責任著者
Effective Synthesis of Cationic Cellulose with a High Degree of Substitution and Its Characteristics for Battery Applications

Yutaro Hayashi, Mariya Usami, Elisabeth R. D. Ito, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa-Fujita

ACS Applied Polymer Materials 7(5) 3024-3032 2025年3月14日査読有り招待有り最終著者責任著者
Effect of cation side-chain structure on the physicochemical properties of pyrrolidinium-based electrolytes upon mixing with sodium salt

Yoshifumi Hirotsu, Morgan L. Thomas, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa-Fujita

Science and Technology of Advanced Materials 26(1) 2466417 2025年3月5日査読有り招待有り最終著者責任著者
NHC‐Catalyzed Synthesis of 2‐Aroylchromones and Their Application in the Synthesis of Wrightiadione Analogues

Futa Koyama, Justin Lamb, Moena Hirao, Noriyuki Suzuki, Masahiro Yoshizawa-Fujita, Toyonobu Usuki, Yumiko Suzuki

Advanced Synthesis & Catalysis 367(3) e202400955 2025年2月4日査読有り
An ionic liquid containing arsonium cation

Ryoto Inaba, Tomohiro Imai, Showa Kitajima, Hitoshi Kasai, Kouki Oka, Ryoyu Hifumi, Ikuyoshi Tomita, Masahiro Yoshizawa-Fujita, Kensuke Naka, Hiroaki Imoto

Chemical Communications 60(95) 14022-14025 2024年12月11日査読有り
Phase transition and ionic conductivity of pyrrolidinium-based ionic plastic crystals with magnesium salts

Yoshifumi Hirotsu, Ryotaro Sekiguchi, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa-Fujita

Bulletin of the Chemical Society of Japan 97(10) uoae101 2024年10月査読有り最終著者責任著者
Heterogenous Dynamics of Diffusive Motion in Organic Ionic Plastic Crystal Studied Using Spin-Spin Relaxation Time: N, N-Diethylpyrrolidinium Bis(fluorosulfonyl)amide

Keiko Nishikawa, Kozo Fujii, Kazuhiko Matsumoto, Hiroshi Abe, Masahiro Yoshizawa-Fujita

Bulletin of the Chemical Society of Japan 2024年8月19日査読有り最終著者
Efficient Exploration of Highly Conductive Pyrrolidinium-Based Ionic Plastic Crystals Using Materials Informatics

Takuto Ootahara, Kan Hatakeyama-Sato, Morgan L. Thomas, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa-Fujita

ACS Applied Electronic Materials 6(8) 5866-5878 2024年7月29日査読有り最終著者責任著者
Boosting the Ionic Conductivity of Pyrrolidinium-Based Ionic Plastic Crystals by LLZO Fillers

Kotoko Ariga, Shuho Akakabe, Ryotaro Sekiguchi, Morgan L. Thomas, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa-Fujita

ACS Omega 9(20) 22203-22212 2024年5月21日最終著者責任著者
Impacts of synthesis variables on spectroscopics evaluation of biobased fatty amide as alkylammonium salt’s precursor for perovskite

N.M. Mustafa, F.N. Jumaah, M. Yoshizawa-Fujita, N.A. Ludin, M. Akhtaruzzaman, N.H. Hassan, A. Ahmad, K.M. Chan, M.S. Su’ai

Construction and Building Materials 428 136283-136283 2024年5月17日査読有り
Bio-based quaternary ammonium salt as an electrolyte for dye-sensitised solar cells

F.N. Jumaah, N.M. Mustafa, N.N. Mobarak, N.H. Hassan, S.A.M. Noor, N.A. Ludin, K.H. Badri, A. Ahmad, M. Yoshizawa-Fujita, M.S. Su'ai

Electrochimica Acta 472 143383-143383 2023年12月20日査読有り
Multiblock-copolymerisation-derived sulfonated-poly(p-phenylene)-based polymer electrolyte membranes with simultaneously enhanced proton conductivity and mechanical strength

Miru Yoshida-Hirahara, Masahiro Yoshizawa-Fujita, Yuko Takeoka, Masahiro Rikukawa

Materials Advances 4(19) 4555-4570 2023年9月8日査読有り
Organic ionic plastic crystals: flexible solid electrolytes for lithium secondary batteries

Morgan L. Thomas, Kan Hatakeyama-Sato, Shinkoh Nanbu, Masahiro Yoshizawa-Fujita

Energy Advances 2(6) 748-764 2023年4月25日査読有り最終著者責任著者
Review of non-crystalline and crystalline quaternary ammonium ions: Classification, structural and thermal insight into tetraalkylammonium ions

F.N. Jumaah, N.N. Mobarak, N.H. Hassan, S.A.M. Noor, S.N.S. Nasir, N.A. Ludin, K.H. Badri, A. Ahmad, Elisabeth R.D. Ito, M. Yoshizawa-Fujita, M.S. Su'ai

Journal of Molecular Liquids 376 121378-121378 2023年4月15日査読有り
Applications of Zwitterions and Zwitterionic Polymers for Li‐Ion Batteries

Masahiro Yoshizawa‐Fujita, Hiroyuki Ohno

The Chemical Record 23(8) e202200287 2023年2月13日査読有り招待有り筆頭著者責任著者
Free ionic rotators on crystal lattice points – Structures of ionic plastic crystals

Keiko Nishikawa, Kozo Fujii, Taisei Yamada, Masahiro Yoshizawa-Fujita, Kazuhiko Matsumoto

Chemical Physics Letters 803 139771-139771 2022年9月16日査読有り招待有り
Improving the Electrochemical Stability of a Polyester–Polycarbonate Solid Polymer Electrolyte by Zwitterionic Additives

Isabell L. Johansson, Christofer Sångeland, Tamao Uemiya, Fumito Iwasaki, Masahiro Yoshizawa-Fujita, Daniel Brandell, Jonas Mindemark

ACS Applied Energy Materials 5(8) 10002-10012 2022年8月22日査読有り
Ion Conductive Behavior of Oligoether/Zwitterion Diblock Copolymers Containing Magnesium Salt

Masahiro Yoshizawa-Fujita, Ryoma Ota, Jun Ishii, Yuko Takeoka, Masahiro Rikukawa

223(8) 2100363 2022年4月査読有り招待有り筆頭著者責任著者
All-Solid-State High-Voltage Supercapacitors Using an Ionic Plastic Crystal-Based Electrolyte

Masahiro Yoshizawa-Fujita, Satoshi Kubota, Shuichi Ishimoto

Frontiers in Energy Research 10 854090 2022年3月8日査読有り招待有り筆頭著者責任著者
Phase transitions and ionic conductivity of ionic plastic crystals based on pyrrolidinium cations and dihydrogen phosphate anion

Masahiro Yoshizawa-Fujita, Masanori Nakazawa, Yuko Takeoka, Masahiro Rikukawa

Journal of Non-Crystalline Solids: X 13 100078-100078 2022年3月査読有り招待有り筆頭著者責任著者
Simple and Fast One-Pot Cellulose Gel Preparation in Aqueous Pyrrolidinium Hydroxide Solution–Cellulose Solvent and Antibacterial Agent

Elisabeth R. D. Seiler, Kohei Koyama, Tomoyuki Iijima, Tamao Saito, Yuko Takeoka, Masahiro Rikukawa, Masahiro Yoshizawa-Fujita

Polymers 13(12) 1942-1942 2021年6月11日査読有り最終著者責任著者
The Influences of 1-Butyl-3-Methylimidazolium Tetrafluoroborate on Electrochemical, Thermal and Structural Studies as Ionic Liquid Gel Polymer Electrolyte

Mariah Zuliana Dzulkipli, Jamilah Karim, Azizan Ahmad, Nurul Akmaliah Dzulkurnain, Mohd Sukor Su’ai, Masahiro Yoshizawa-Fujita, Lee Tian Khoon, Nur Hasyareeda Hassan

Polymers 13(8) 1277-1277 2021年4月14日査読有り
Polyether-Based Supramolecular Electrolytes With Two-Dimensional Boroxine Skeleton

Masahiro Yoshizawa-Fujita, Shunsuke Horiuchi, Tamao Uemiya, Jun Ishii, Yuko Takeoka, Masahiro Rikukawa

Frontiers in Energy Research 9 663270 2021年4月12日査読有り招待有り筆頭著者責任著者
Oligoether/Zwitterion Diblock Copolymers: Synthesis and Application as Cathode-Coating Material for Li Batteries

Masahiro Yoshizawa-Fujita, Jun Ishii, Yuko Takeoka, Masahiro Rikukawa

Polymers 13(5) 800-800 2021年3月5日査読有り筆頭著者責任著者
Perpendicularly oriented 2D perovskite thin films prepared using the bar-coating method and DMSO additive

Misato Akiyoshi, Masahiro Yoshizawa-Fujita, Yuko Takeoka, Masahiro Rikukawa

Chemical Communications 57(27) 3395-3398 2021年査読有り
Synthesis of Recyclable Magnetic Cellulose Nanofibers from Ionic Liquids for Practical Applications in Separation Science

Satoshi Horikoshi, Satoshi Yamazaki, Yuhei Arai, Daisuke Sakemi, Masahiro Yoshizawa-Fujita, Nick Serpone

Journal of Oleo Science 70(5) 737-743 2021年査読有り
Reversible Reduction of the TEMPO Radical: One Step Closer to an All-Organic Redox Flow Battery

Luke Wylie, Thomas Blesch, Rebecca Freeman, Kan Hatakeyama-Sato, Kenichi Oyaizu, Masahiro Yoshizawa-Fujita, Ekaterina I. Izgorodina

ACS Sustainable Chemistry & Engineering 8(49) 17988-17996 2020年12月14日査読有り
Enhancement of the electrochemical stability of tetraglyme-Li[TFSA] electrolyte systems by adding [Bimps] zwitterion: An in-situ IV-SFG study

Chengzi Qi, Takashi Iwahashi, Wei Zhou, Doseok Kim, Seitaro Yamaguchi, Masahiro Yoshizawa-Fujita, Yukio Ouchi

Electrochimica Acta 361 137020-137020 2020年11月20日査読有り
Synthesis and Characteristics of Pyrrolidinium‐Based Organic Ionic Plastic Crystals with Various Sulfonylamide Anions

Masahiro Yoshizawa‐Fujita, Hiromasa Yamada, Shun Yamaguchi, Haijin Zhu, Maria Forsyth, Yuko Takeoka, Masahiro Rikukawa

Batteries & Supercaps 3(9) 884-891 2020年9月査読有り招待有り筆頭著者責任著者
Synthesis and investigation of sulfonated poly(p-phenylene)-based ionomers with precisely controlled ion exchange capacity for use as polymer electrolyte membranes

Miru Yoshida-Hirahara, Satoshi Takahashi, Masahiro Yoshizawa-Fujita, Yuko Takeoka, Masahiro Rikukawa

RSC Advances 10 12810-12822 2020年3月31日査読有り
Development of a novel cellulose solvent based on pyrrolidinium hydroxide and reliable solubility analysis

E. R. D. Seiler, Y. Takeoka, M. Rikukawa, M. Yoshizawa-Fujita

RSC Advances 10(19) 11475-11480 2020年3月20日査読有り最終著者責任著者
Polyketones as host materials for solid polymer electrolytes

T. Eriksson, A. Mace, Y. Manabe, M. Yoshizawa-Fujita, Y. Inokuma, D. Brandell, J. Mindemark

Journal of The Electrochemical Society 167(7) 070537-070537 2020年3月13日査読有り
Factors determining the vertical orientation of two-dimensional perovskites

R. Arai, M. Yoshizawa-Fujita, Y. Takeoka, M Rikukawa

CrystEngComm 21(31) 4529-4533 2019年8月21日査読有り
Novel organic-inorganic perovskite compounds having phosphonium groups

S. Shimizu, M. Yoshizawa-Fujita, Y. Takeoka, M. Rikukawa

ACS Omega 4(8) 13260-13264 2019年8月20日査読有り
プロトン性イオン液中におけるセルロースのエステル化

藤田正博, 英秀樹, 竹岡裕子, 陸川政弘

高分子論文集 76(4) 330-334 2019年7月25日査読有り筆頭著者責任著者
Pyrrolidinium-based organic ionic plastic crystals: Relationship between side chain length and properties

H. Yamada, Y. Miyachi, Y. Takeoka, M. Rikukawa, M. Yoshizawa-Fujita

Electrochimica Acta 303 293-298 2019年4月20日査読有り最終著者責任著者
Effect of β-cyclodextrin on physicochemical properties of an ionic liquid electrolyte composed of N-methyl-N-propylpyrrolidinium bis(trifluoromethylsulfonyl)amide

M. Suzuki, N. Kurahashi, Y. Takeoka, M. Rikukawa, M. Yoshizawa-Fujita

Frontiers in Chemistry 7 90 2019年2月20日査読有り最終著者責任著者
Towards improved performance of all-organic nitroxide radical batteries with ionic liquids: A theoretical perspective

L. Wylie, K. Oyaizu, A. Karton, M. Yoshizawa-Fujita, E. I. Izgorodina

ACS Sustainable Chemistry & Engineering 7(5) 5367-5375 2019年2月1日査読有り招待有り
Functional design of ionic liquids, Unprecedented Liquids that Contribute to Energy Technology, Bioscience, and Materials Sciences

H. Ohno, M. Yoshizawa-Fujita, Y. Kohno

Bulletin of the Chemical Society of Japan 92(4) 852-868 2019年1月26日査読有り招待有り
Synthesis of pyrrolidinium-based plastic crystals exhibiting high ionic conductivity at ambient temperature

S. Yamaguchi, H. Yamada, Y. Takeoka, M. Rikukawa, M. Yoshizawa-Fujita

New Journal of Chemistry 43(10) 4008-4012 2019年1月25日査読有り最終著者責任著者
Effect of alkyl chain length in anion on physicochemical properties of cellulose-dissolving protic ionic liquids

H. Hanabusa, Y. Takeoka, M. Rikukawa, M. Yoshizawa-Fujita

Australian Journal of Chemistry 72(1-2) 55-60 2019年1月査読有り最終著者責任著者
Tuning the structures and optical properties of perovskites by varying the alkylamine type and chain length

H. Nagasaka, M. Yoshizawa-Fujita, Y. Takeoka, M. Rikukawa

ACS Omega 3(12) 18925-18929 2018年12月31日査読有り
Extraction and Isolation of Natural Organic Compounds from Plant Leaves Using Ionic Liquids

Toyonobu Usuki, Masahiro Yoshizawa-Fujita

Application of Ionic Liquids in Biotechnology 227-240 2018年11月16日