CVClient
基本情報
- 所属
- 兵庫県立大学 工学部 応用化学工学科 准教授
- 学位
- 工学博士(2009年3月 東京工業大学)
- J-GLOBAL ID
- 201801018251558684
- researchmap会員ID
- B000299913
研究分野
1論文
12-
Polymers 15(6) 1408-1408 2023年3月12日Copolymer films of photoalignable liquid crystalline (LC) copolymethacrylates comprised of a phenyl benzoate mesogen connected with N-benzylideneaniline end moiety (NBA2) and benzoic acid (BA) side groups exhibit a photoinduced reorientation behavior. Significant thermally stimulated molecular reorientation attains a dichroism (D) greater than 0.7 for all copolymer films and a birefringence of 0.113–0.181. In situ thermal hydrolysis of the oriented NBA2 groups decreases the birefringence to 0.111–0.128. However, the oriented structures of the film are maintained, demonstrating a photo-durability, even though the NBA2 side groups photo-react. The hydrolyzed oriented films show higher photo-durability without changing their optical properties.
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2022 29th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD) 132-135 2022年7月5日 査読有り
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Macromolecules 51(14) 5392-5400/9 2018年7月12日 査読有り安息香酸（BA）側基を有するメタクリレートとn-ブチルメタクリレートからジブロック共重合体およびランダム共重合体を合成し、BAとのH結合を支配するN-ベンジリデンアニリンカルボン酸（NBA）をドープした薄膜の光誘起再配向を、直線偏光（LP）365nmおよび313nmの光を用いて調べた。BA側鎖の配向とNBAの昇華は、ジブロック共重合体フィルムでは熱刺激により十分に達成されたが、ランダム共重合体では熱処理によりランダム配向となった。さらに、NBAをドープしたフィルムにフォトマスクを用いてLP光を照射したときのフィルムの表面レリーフ（SR）形成について調べた。液晶特性、熱特性、軸選択的光異性化、フィルムの光架橋が、分子再配向とSR形成に重要な役割を果たしている。
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日本液晶学会討論会講演予稿集 2014 PA35 2014年<p>A photo-cross-linkable liquid crystalline polymer (PMCB6M) film can be applicable to LC alignment layer. In case of LC alignment, a near surface structure of alignment layer is most important. We investigated three-dimensional molecular orientation of oblique aligned PMCB6M films in bulk and near surface determined by UV-vis absorption spectroscopy and near edge X-ray absorption spectroscopy (NEXAFS).</p>
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日本液晶学会討論会講演予稿集 2014 PA27 2014年<p>Supramolecular liquid crystal using the interaction of pyridine-carboxylic acid is known to many. On the other hand, previously, we have reported that the axis-selective anisotropy is generated by irradiating the LPUV light in the thin film of the hydrogen bonding liquid crystal polymers having a cinnamic acid in the side chain terminal, and the anisotropy is amplified in a perpendicular direction to the polarization electric field E by heat treating it in the LC temperature range. In this presentation, we report the results for the photo-alignment behavior when various pyridine compounds were added in this polymer.</p>
MISC
13-
Journal of Photopolymer Science and Technology 32 549-552 2019年1月1日© 2019 SPST. Homogeneously aligned liquid crystal (LC) cell was fabricated using nematic LCs (NLCs) doped with a polymerizable monomer comprising of photocrosslinkable mesogenic side groups, combined with the linearly polarized UV light exposure at elevated temperature. We have clarified that the photosensitive layer forms on the substrates via the thermal polymerization, followed by generating the NLC photoalignment based on the axis-selective photocrosslinking. The LC characteristics of the photosensitive side groups of the polymerizable material play an important role in the defect-free alignment for the NLCs.
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日本物理学会講演概要集 69(2) 535-535 2014年8月22日
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日本物理学会講演概要集 69(1) 887-887 2014年3月5日
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日本物理学会講演概要集 68(2) 811-811 2013年8月26日
講演・口頭発表等
6-
日本液晶学会討論会講演予稿集 2013年 日本液晶学会We prepared various chromophores containing hydrogen bonding unit and investigated their change in photoluminescent properties induced by mechanical stimuli. We reported photoluminescent color and lifetime tuning of complex compound of dyes and acids.
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日本液晶学会討論会講演予稿集 2013年 日本液晶学会In this study, we synthesized new hydrogen-bonding asymmetric luminophores with different site of substitution, and evaluated their optical properties, orientation properties on hydrogen-bonding photo-alignment polymer film by UV-vis absorption spectra, fluorescent spectra, and fluorescence lifetime measurements.
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日本液晶学会討論会講演予稿集 2013年 日本液晶学会Schiff base compound is well known as liquid crystalline material, and photoisomerization can occur. However, photoreaction of liquid crystalline polymers (LCPs) with schiff base side group have not been investigated. In this presentation, we synthesized LCPs with schiff base side group and investigated the axis-selective photo reaction.
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日本液晶学会討論会講演予稿集 2013年 日本液晶学会We prepared novel polymethacrylates containing phenyl cyano vinyl terthiohene side chain and evaluated their mesomorphic propeties. Additionally, we synthesized oligothiophene with the same structure and explored their alignment behavior on photoaligned polymer films.
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日本液晶学会討論会講演予稿集 2013年 日本液晶学会A photo-cross-linkable liquid crystalline polymer (PMCB6M) film is applicable to LC alignment layer and it is important to investigate reorientation behavior at the near surface of reoriented PMCB6M film. In this study, reorientation behavior of PMCB6M film in bulk and at near surface was performed by UV-vis spectroscopy and NEXAFS.