荒川 優樹

J-GLOBALへ         更新日: 18/12/11 18:51
 
アバター
研究者氏名
荒川 優樹
ハンドル
Yuki Arakawa
URL
https://www.tut.ac.jp/university/faculty/ens/post.html
所属
豊橋技術科学大学
職名
助教
学位
博士(工学)
科研費研究者番号
30757365
ORCID ID
0000-0002-8944-602X

研究分野

 
 

経歴

 
2015年4月
 - 
現在
豊橋技術科学大学 大学院工学研究科 環境・生命工学系 助教
 

論文

 
Hideto Tsuji, Koudai Kikkawa, Yuki Arakawa
Polymer Journal   50 1079-1088   2018年11月
© 2018, The Society of Polymer Science, Japan. Random copolymers of l-lactic acid (LLA) and glycolic acid (GA) [P(LLA-GA)] with 0–100 mol% LLA units in the polymers were synthesized and their crystallization behavior was investigated by two repres...
Hideto Tsuji, Yuki Arakawa, Nobutsugu Matsumura
Polymer Bulletin   1-18   2018年7月
© 2018 Springer-Verlag GmbH Germany, part of Springer Nature The effects of quenching from the melt on the isothermal crystallization of star-shaped four-armed stereo diblock poly(lactide) (4-LD) and four-armed poly(l-lactide) (4-L) polymers with ...
Yuya Ishii, Keisho Omori, Heisuke Sakai, Yuki Arakawa, Mitsuo Fukuda
ACS Omega   3 6787-6793   2018年6月
© Copyright 2018 American Chemical Society. Wet-electrospun (WES) polymer micron and submicron fibers are promising building blocks for small, flexible optical fiber devices, such as waveguides, sensors, and lasers. WES polymer fibers have an inhe...
Hideto Tsuji, Yuki Arakawa
Polymer Chemistry   9 2446-2457   2018年5月
© The Royal Society of Chemistry 2018. The alternating stereocopolymer poly(l-lactic acid-alt-d-lactic acid), i.e., syndiotactic poly(lactic acid) (s-PLA) as well as isotactic poly(l-lactic acid) (i-PLA) as a reference polymer, was successfully sy...
Yuki Arakawa, Yukito Sasaki, Naoki Haraguchi, Shinichi Itsuno, Hideto Tsuji
Liquid Crystals   45 821-830   2018年5月
© 2017 Informa UK Limited, trading as Taylor & Francis Group. We synthesised a novel family of liquid crystalline 1,4-phenylene bis(4-alkylthio benzoates), of which homologues with different alkyl chain lengths of 1–8 were designed, to investiga...
Yuki Arakawa, Satoyoshi Inui, Hideto Tsuji
Liquid Crystals   45 811-820   2018年5月
© 2017 Informa UK Limited, trading as Taylor & Francis Group. In this study, we offer a new family of alkylthio-containing diphenylacetylene-based liquid crystalline molecules (the so-called tolanes) showing nematic phases stable down to room te...
Yuki Arakawa, Hiroki Kuwahara, Masatoshi Tokita, Gen ichi Konishi, Hideto Tsuji
Molecular Crystals and Liquid Crystals   662 197-207   2018年2月
© 2018 Taylor & Francis Group, LLC. We present a new fabrication approach to achieve a high birefringence film by means of photopolymerization based on an alkylthio-containing rod-like liquid crystalline molecule exhibiting large temperature dep...
Hideto Tsuji, Shotaro Sato, Noriaki Masaki, Yuki Arakawa, Akinori Kuzuya, Yuichi Ohya
Polymer Chemistry   9 565-575   2018年2月
© This journal is The Royal Society of Chemistry. α-Hydroxy acid and α-amino acid-derived poly(l-lactic acid-co-l-alanine)s and poly(d-lactic acid-co-d-alanine)s with different alanine unit contents were synthesized by copolymerization of l-lactid...
Hideto Tsuji, Noriaki Masaki, Yuki Arakawa, Kazumasa Iguchi, Tadashi Sobue
Crystal Growth and Design   18 521-530   2018年1月
© 2017 American Chemical Society. The ternary stereocomplex (TSC) crystallizability of ternary substituted and unsubstituted poly(lactic acid) blends composed of poly(d-2-hydroxy-3-methylbutanoic acid) [P(D-2H3MB)], poly(l-2-hydroxy-3-methylbutano...
Yuki Arakawa, Gen Ichi Konishi
Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry   76 1076-1085   2018年1月
© 2018 Society of Synthetic Organic Chemistry. All rights reserved. High-birefringence liquid crystal materials are used in a wide variety of optical applications such as reflection films and photo storage devices; they are likely to find more app...
Hideto Tsuji, Katsuya Osanai, Yuki Arakawa
Crystal Growth and Design      2018年1月
© 2018 American Chemical Society. Stereocomplex (SC) crystallization in staggered asymmetric 2-hydroxyalkanoic acid-based random copolymer blends of L-configured poly(L-2-hydroxybutanoic acid-co-L-lactic acid) [P(L-2HB-co-LLA)] (50/50) and D-confi...
Hideto Tsuji, Soma Noda, Yuki Arakawa, Tadashi Sobue
Crystal Growth and Design      2018年1月
© 2018 American Chemical Society. The random copolymers of optically active L-lactic acid (LLA) and D-2-hydroxybutanoic acid (D-2HB) [P(LLA-co-D-2HB)s] with the opposite configurations and 2-hydroxybutanoic acid (2HB) unit content range of 0-100 m...
Yuki Arakawa, Yukito Sasaki, Hideto Tsuji
Chemistry Letters   46 1657-1659   2017年11月   [査読有り]
© 2017 The Chemical Society of Japan. We offer novel hydrogen-bonded liquid crystalline complexes between 4-alkylthiobenzoic acids and 4-phenylpyridine. Although similar molecular systems connected with ester linkages or covalent bonds do not show...
Hideto Tsuji, Ryota Ozawa, Yuki Arakawa
Journal of Physical Chemistry B   121 9936-9946   2017年10月   [査読有り]
© 2017 American Chemical Society. Star-shaped four-armed stereo diblock poly(lactide) (4-LD) and linear one-armed PLLA or PDLA (1-L or 1-D) having a molecular weight similar to that of 4-LD [higher molecular weight 1-L(H) or 1-D(H)] and that of on...
荒川 優樹
日本液晶学会誌   21(4) 312-316   2017年10月   [査読有り][招待有り]
Yuki Arakawa, Hideto Tsuji
Phase Transitions   90 549-556   2017年6月   [査読有り]
© 2016 Informa UK Limited, trading as Taylor & Francis Group. In order to reveal the effect of fluorine substitutions on the refractive index properties for calamitic nematic materials, we carried out a comparative study with respect to non-fluo...
Yuki Arakawa, Yukito Sasaki, Kazunobu Igawa, Hideto Tsuji
New Journal of Chemistry   41 6514-6522   2017年6月   [査読有り]
© 2017 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. A simple but novel class of hydrogen bonding liquid crystalline benzoic acids with alkylthio (or alkylsulfanyl; SR) groups was established. In general, alt...
Yuki Arakawa, Hideto Tsuji
Molecular Crystals and Liquid Crystals   647 422-429   2017年4月   [査読有り]
© 2017 Taylor & Francis Group, LLC. In order to figure out the effects of terminal groups on phase transitions and birefringence, we performed a comparative study for non-fluorinated and centrally fluorinated liquid crystalline 1,4-bis(phenyleth...
Hideto Tsuji, Michiaki Ogawa, Yuki Arakawa
Journal of Physical Chemistry B   121 2695-2702   2017年3月   [査読有り]
© 2017 American Chemical Society. Two-armed poly(l-lactide) (PLLA)-b-poly(d-lactide) (PDLA) (2-LD) copolymers with a wide-range of molecular weight were synthesized and the effect of coinitiator moiety, which functions as impurity and causes chain...
Hideto Tsuji, Soma Noda, Takayuki Kimura, Tadashi Sobue, Yuki Arakawa
Scientific Reports   7    2017年3月   [査読有り]
© 2017 The Author(s). D-configured poly(D-lactic acid) (D-PLA) and poly(D-2-hydroxy-3-methylbutanoic acid) (D-P2H3MB) crystallized separately into their homo-crystallites when crystallized by precipitation or solvent evaporation, whereas incorpora...
Hideto Tsuji, Yuzuru Sakamoto, Yuki Arakawa
Macromolecular Chemistry and Physics   218(20)    2017年1月   [査読有り]
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Relatively high-molecular-weight linear one- and two-armed and star-shaped four-armed poly(l-lactide) and poly(d-lactide) are synthesized and the multiplicate effects of arm-number (branching ar...
Hideto Tsuji, Nobutsugu Matsumura, Yuki Arakawa
Polymer Journal   48 1087-1093   2016年11月   [査読有り]
The crystallization of equimolar 4-LD polymers with different molecular weights and four-armed PLLA (4-L) and 4-LD polymers with different L-lactyl unit contents were investigated during precipitation or non-isothermal crystallization. All the equ...
Hideto Tsuji, Michiaki Ogawa, Yuki Arakawa
Journal of Physical Chemistry B   120 11052-11063   2016年10月   [査読有り]
© 2016 American Chemical Society. Star-shaped four-armed stereo diblock copolymers with an amorphous poly(dl-lactide) (PDLLA) core and a crystalline poly(l-lactide) (PLLA) or poly(d-lactide) (PDLA) shell (4-DL-L and 4-DL-D) and with a crystalline ...
Hideto Tsuji, Nobutsugu Matsumura, Yuki Arakawa
Journal of Physical Chemistry B   120 1183-1193   2016年2月   [査読有り]
© 2016 American Chemical Society. The effects of l-lactyl unit content on star-shaped four-armed stereo diblock poly(lactide) (4-LD) polymers and star-shaped four-armed poly(l-lactide) (4-L) on the isothermal crystallization from the melt were inv...
Yuki Arakawa, Sungmin Kang, Hideto Tsuji, Junji Watanabe, Gen Ichi Konishi
RSC Advances   6 92845-92851   2016年1月   [査読有り]
© 2016 The Royal Society of Chemistry. We designed three new bistolanes with alkylsulfanyl groups. A symmetric derivative contains short terminal methylsulfanyl groups (-SCH 3 ) on both ends, while two asymmetric derivatives contain a methylsulfan...
Yuki Arakawa, Sungmin Kang, Hideto Tsuji, Junji Watanabe, Gen Ichi Konishi
RSC Advances   6 16568-16574   2016年1月
© The Royal Society of Chemistry 2016. In order to generate high-birefringence liquid crystal (LC) materials, the introduction of highly polarisable groups into the terminal positions of the mesogen represents one of the most important design stra...
Yuki Arakawa, Sungmin Kang, Junji Watanabe, Gen Ichi Konishi
Phase Transitions   88 1181-1192   2015年1月
© 2015 Taylor and Francis. Three novel fluorinated bis(biphenyl)diacetylene (1,4-bis(biphenyl-4-yl)buta-1,3-diyne) derivatives, with alkoxy tails at the terminal positions, were prepared for use as high-birefringent nematic materials. To lower the...
Yuki Arakawa, Hiroki Kuwahara, Koichi Sakajiri, Sungmin Kang, Masatoshi Tokita, Gen Ichi Konishi
Liquid Crystals   42 1419-1427   2015年1月
© 2015 Taylor & Francis. The photo-polymerisation of mixtures of mono- and di-methacrylates, containing a bistolane moiety with a central fluorine-substituted benzene ring, resulted in the formation of highly birefringent polymer films (Δn = 0.4...
Yuki Arakawa, Sungmin Kang, Junji Watanabe, Gen Ichi Konishi
RSC Advances   5 8056-8062   2015年1月   [査読有り]
© The Royal Society of Chemistry 2015. We designed a hydrogen-bonding tolane-based molecule with terminal carboxyl and alkylsulfanyl groups in an effort to realize thioether-containing rod-like liquid crystalline materials. The molecule successful...
Yuki Arakawa, Sungmin Kang, Shunpei Nakajima, Koichi Sakajiri, Susumu Kawauchi, Junji Watanabe, Gen ichi Konishi
Liquid Crystals   41 642-651   2014年5月   [査読有り]
New monocyclic and bicyclic thiophene-based diaryl-diacetylene liquid crystal (LC) materials were synthesised and demonstrated to exhibit wide enantiotropic nematic phases. One thiophenyl-benzene derivative, in particular, displayed a stable nemat...
Sungmin Kang, Shunpei Nakajima, Yuki Arakawa, Masatoshi Tokita, Junji Watanabe, Gen Ichi Konishi
Polymer Chemistry   5 2253-2258   2014年4月   [査読有り]
We synthesised a highly birefringent liquid crystalline (LC) side-chain polymer based on polymethacrylate with a dinaphthyl-acetylene mesogenic unit in the side chain. Three polymer types with different carbon numbers in the terminal alkoxy chain ...
Yuki Arakawa, Sungmin Kang, Junji Watanabe, Gen Ichi Konishi
Chemistry Letters   43 1858-1860   2014年1月
© 2014 The Chemical Society of Japan. We designed fluorinated diphenyldiacetylenebased liquid crystal (LC) molecules that exhibit enantiotropic nematic phases near room temperature. These LC molecules also show high birefringence (Δ < inf > n < /i...
Yuki Arakawa, Sungmin Kang, Shunpei Nakajima, Koichi Sakajiri, Yokan Cho, Susumu Kawauchi, Junji Watanabe, Gen Ichi Konishi
Journal of Materials Chemistry C   1 8094-8102   2013年12月   [査読有り]
Improvements in birefringence properties of LC materials are actively being pursued because of the increase in their applications in optical devices. 1,6-Diphenyl-1,3,5-hexatriyne, i.e., diphenyltriacetylenes (DPTAs; number of acetylene units, n =...
Sungmin Kang, Shunpei Nakajima, Yuki Arakawa, Gen Ichi Konishi, Junji Watanabe
Journal of Materials Chemistry C   1 4222-4226   2013年7月   [査読有り]
The extraordinary and ordinary refractive indices in highly birefringent dinaphthyldiacetylene-based nematic liquid crystals with different alkoxy tails were accurately measured by the multiple-beam interference method. The high birefringence in t...
Yusuke Tojo, Yuki Arakawa, Junji Watanabe, Gen-ichi Konishi
Polymer Chemistry   4(13) 3807-3812   2013年7月   [査読有り]
Yuki Arakawa, Hidemine Furuya, Gen Ichi Konishi
Polymer Bulletin   70 47-57   2013年1月   [査読有り]
We report the synthesis of various substituted polyacetylenes including a novel poly(dinaphthylacetylene), poly{2-(2-ethylhexyloxy)-6-[2-(6- methoxynaphthyl-2-yl)ethynyl]naphthalene}, by the use of a WCl 6 -Ph 4 Sn catalyst system, and systematic...
Makoto Uchimura, Ryohei Ishige, Masayuki Shigeta, Yuki Arakawa, Yosuke Niko, Junji Watanabe, Gen Ichi Konishi, Gen Ichi Konishi
Research on Chemical Intermediates   39 403-414   2013年1月   [査読有り]
We synthesized thermotropic liquid-crystalline polyesters in which 9,10-diphenylanthracene moieties are incorporated into the main chain type of polyester forming the chiral smectic C (Sm C*). The polymers were prepared by the isopropyltitanate-ca...
Yuki Arakawa, Shunpei Nakajima, Sungmin Kang, Masayuki Shigeta, Gen ichi Konishi, Junji Watanabe
Liquid Crystals   39 1063-1069   2012年9月   [査読有り]
We synthesised 1,2-bis(6-alkoxy-2-naphthyl)acetylene as a new dinaphthylacetylene liquid crystal (LC) compound with alkoxy tails of length m (DNA-OCm) and characterised their phase behaviour by polarising optical microscopy and differential scanni...
Yuki Arakawa, Shunpei Nakajima, Sungmin Kang, Gen Ichi Konishi, Junji Watanabe
Journal of Materials Chemistry   22 14346-14348   2012年8月   [査読有り]
We synthesized polymethacrylate with a diphenyl-diacetylene moiety in the side chain. It formed a nematic LC, which appears in the wide temperature region and vitrified at room temperature. The polymer exhibited a high-birefringence of ∼0.3 at 550...
Yuki Arakawa, Shunpei Nakajima, Sungmin Kang, Masayuki Shigeta, Gen Ichi Konishi, Junji Watanabe
Journal of Materials Chemistry   22 13908-13910   2012年7月   [査読有り]
We designed dinaphthyl-diacetylene-based nematic liquid crystals with alkoxy tails (DNDA-OCm) and evaluated their birefringence (Δn). Actual measurements of pure target compounds showed that DNDA-OC2 had the highest value of 0.62 at 550 nm at T c...
Yuki Arakawa, Shunpei Nakajima, Ryohei Ishige, Makoto Uchimura, Sungmin Kang, Gen Ichi Konishi, Junji Watanabe
Journal of Materials Chemistry   22 8394-8398   2012年5月   [査読有り]
We synthesized two series of diphenyl-diacetylene (DPDA)-based materials with alkoxy and alkyl tails of length m (DPDA-OCm and DPDA-Cm, respectively), and measured their nematic-phase birefringence (Δn) as a function of wavelength and temperature....

Misc

 
荒川優樹, 石井佑弥, 石井佑弥, 櫻井庸明
豊田研究報告   (71) 200‐203   2018年5月
新しい液晶分子を開発
東愛知新聞      2017年12月
国立大学法人豊橋技術科学大学プレスリリース      2017年12月
荒川優樹
液晶   21(4) 312‐316   2017年10月
日本液晶学会ニュースレター      2017年10月   [依頼有り]
荒川優樹, 辻秀人
高分子学会予稿集(CD-ROM)   66(2) ROMBUNNO.2Pc065   2017年9月
豊田研究報告   (70) 194‐195   2017年5月

書籍等出版物

 
月刊OPTRONICS
荒川 優樹 (担当:分担執筆, 範囲:若手研究者の挑戦)
株式会社オプトロニクス社   2018年12月   
荒川優樹、小西玄一 (担当:分担執筆, 範囲:ジフェニルジアセチレン誘導体を活用した大きな複屈折を有する液晶高分子の設計技術)
技術情報協会   2017年7月   ISBN:4861046602
荒川優樹、小西玄一 (担当:分担執筆, 範囲:【第2編 材料開発技術】第8章 複屈折制御材料「4. 大きな複屈折を有する液晶高分子」)
シーエムシー   2015年1月   ISBN:4781310567

特許

 
山田 剛史, 向島 誠貴, 平石 明, 辻 秀人, 荒川 優樹
荒川 優樹, 小西 玄一, 中島 俊平, 姜 聲敏, 渡辺 順次, 松本 卓也, 西村 涼, 豊岡 武裕
荒川 優樹, 小西 玄一, 中島 俊平, 姜 聲敏, 渡辺 順次, 松本 卓也, 西村 涼, 豊岡 武裕
荒川 優樹, 小西 玄一, 中島 俊平, 姜 聲敏, 渡辺 順次, 松本 卓也, 西村 涼, 豊岡 武裕
荒川 優樹, 小西 玄一, 中島 俊平, 姜 聲敏, 渡辺 順次, 松本 卓也, 西村 涼, 豊岡 武裕

競争的資金等の研究課題

 
第16族元素系ヘテロ環構造を有する屈曲型液晶分子群の創製と機能開拓
公益財団法人 内藤科学技術振興財団: 内藤科学技術振興財団研究助成金
研究期間: 2018年4月 - 2019年3月    代表者: 荒川 優樹
硫黄の相互作用を利用した新しい液晶性高分子群の創製と偏光素子への応用
日本学術振興会: 科学研究費助成事業・若手研究(B)
研究期間: 2017年4月 - 2019年3月    代表者: 荒川 優樹
置換型ポリ乳酸ステレオコンプレックス形成の法則性の解明および高性能化材料開発
日本学術振興会: 科学研究費助成事業・基盤研究(C)・分担
研究期間: 2016年4月 - 2019年3月    代表者: 辻秀人
オリゴ (パラフェニレンエチニレン)を基盤とした高い配向・配列秩序と異方的電荷輸送特性を有する革新的有機材料の創製
公益財団法人 豊田理化学研究所: 豊田理研スカラー共同研究(Phase 2)
研究期間: 2017年4月 - 2018年3月    代表者: 荒川 優樹
ナノ–マクロスケールの階層秩序構造を有するπ共役系液晶材料の開発とその異方的電荷輸送特性
公益財団法人 豊田理化学研究所: 豊田理研スカラー共同研究(Phase 1)
研究期間: 2016年10月 - 2017年3月    代表者: 荒川 優樹
室温付近で液晶性を示すπ共役系棒状分子の開発
公益財団法人 豊田理化学研究所: 豊田理研スカラー
研究期間: 2016年4月 - 2017年3月    代表者: 荒川 優樹
低消費電力化を目的とした次世代液晶ディスプレイ用光学フィルムの開発
公益財団法人 中部電気利用基礎研究振興財団: 中部電気利用基礎研究振興財団研究助成金
研究期間: 2016年4月 - 2017年3月    代表者: 荒川 優樹
硫黄資源を利用した新しい液晶性高分子材料の開発
一般財団法人 東海産業技術振興財団: 東海産業技術振興財団研究助成金
研究期間: 2016年4月 - 2017年3月    代表者: 荒川 優樹
棒状分子を基盤とする硫黄の特性を利用したネマチック液晶材料の創製
日本学術振興会: 科学研究費助成事業・研究活動スタート支援
研究期間: 2015年8月 - 2017年3月    代表者: 荒川 優樹
公益財団法人 中部電気利用基礎研究振興財団: 国際交流援助
研究期間: 2016年8月       代表者: 荒川 優樹
公益財団法人 小笠原科学技術振興財団: 国際研究集会出張助成事業
研究期間: 2016年9月       代表者: 荒川 優樹
ビスフェニルベンゾエート構造を基盤とした硫黄を有する新しい高複屈折性液晶材料の開発
公益財団法人 日東学術振興財団: 日東学術振興財団研究助成金
研究期間: 2015年12月       代表者: 荒川 優樹
棒状分子の特性と自己組織化を利用した高複屈折性高分子液晶材料の開発
日本学術振興会: 科学研究費助成事業・特別研究員奨励費
研究期間: 2013年4月 - 2015年3月    代表者: 荒川 優樹

講演・口頭発表等

 
荒川 優樹
第49回中部化学関係学協会支部連合秋季大会   2018年11月   
荒川 優樹
XXII Conference on Liquid Crystals   2018年9月   
荒川優樹, 佐々木幸登, 辻秀人
日本液晶学会討論会講演予稿集(CD-ROM)   2018年8月20日   
乾敏祥, 荒川優樹, 辻秀人
日本液晶学会討論会講演予稿集(CD-ROM)   2018年8月20日   
石田結子, 荒川優樹, 辻秀人
日本液晶学会討論会講演予稿集(CD-ROM)   2018年8月20日   

社会貢献活動

 
結晶と液体のあいだ
【出演】  エフエム豊橋  天伯之城 ギカダイ  2016年11月