Preparation of ferroelectric liquid crystalline microcapsule with electro-optical response and its application

电光响应铁电液晶微胶囊的制备及其应用

• 批准号: 11450294
• 负责人: HATATE Yasuo
• 金额: $ 5.31万
• 依托单位: KAGOSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11450294/
• 关键词: Ferroelectric liquid crystalline monomer; Polymeric microsphere; Thermo response; Liquid crystalline polymer; Electro-optical response; Microcapsule; Functionalized polymer; Phase transition behavior

We synthesized a ferroelectric liquid crystalline monomer (4- [4'- (7-octeneloxy) benzoyloxy] benzoate-2methylbutylester, OBBM) possessing both carboxyl p-benzolxybenzoate and carboxyl (s) - (-) -2methylbutylester as a mesogenic group in its side chain. The liquid crystalline and styrene monomers were employed to make matrices of microspheres prepared by dispersion, suspension, or emulsion polymerization. In this study, we investigated in detail physicochemical properties, thermo responses, or electro-optical responses on the microspheres possessing liquid crystalline abilities. The ferroelectric liquid crystal monomer OBBM synthesized had a thermotropic liquid crystalline ability, two phase transition temperatures, and the Smectic C^* texture which is characteristic of the ferroelectric liquid crystalline substances. The microspheres prepared also exhibited liquid crystalline ability, and the phase transition temperatures toward the liquid crystalline segments into the microspheres prepared by copolymerizing the liquid crystalline and styrene monomers could be decreased with increasing styrene monomer. Furthermore, we found that the microspheres remarkably exhibited electro-optical responses at about 10 volt.

合成了侧链同时含有对苯氧基苯甲酸酯和(S)-(-)-2甲基丁酯的铁电液晶单体(4-[4‘-(7-辛烯氧基)苯甲氧基]苯甲酸酯-2-甲基丁酯，OBBM)。将液晶单体和苯乙烯单体用于制备分散聚合、悬浮聚合或乳液聚合制备的微球基质。在这项研究中，我们详细研究了具有液晶能力的微球的物理化学性质、热响应或电光响应。合成的铁电液晶单体OBBM具有热致液晶能力、两个相变温度和铁电液晶物质特有的近晶C^*织构。所制备的微球也具有液晶能力，液晶单体和苯乙烯单体共聚制备的微球向液晶链段的相变温度随苯乙烯单体的增加而降低。此外，我们发现这些微球在大约10伏的电压下表现出显著的电光响应。

项目成果

范星河,上村芳三,吉澤秀和,板原俊夫,幡手泰雄: "液晶性共重合体ミクロスフィアの調製"鹿児島大学工学部研究報告. 41. 165-170 (1999)

Seiga Fan、Yoshizo Uemura、Hidekazu Yoshizawa、Toshio Itahara、Yasuo Hatate：“液晶共聚物微球的制备”鹿儿岛大学工学部研究报告 41. 165-170 (1999)。

M.Yoshida,Y.Hatate,K.Uezu,M.Goto,S.Furusaki: "Chiral recognition polymer by surface molecular imprinting technique"Colloids and Surfaces A : Physicochemical and Engineering. 169. 259-269 (2000)

M.Yoshida，Y.Hatate，K.Uezu，M.Goto，S.Furusaki：“通过表面分子印迹技术进行手性识别聚合物”胶体和表面A：物理化学和工程。

吉田昌弘,吉澤秀和,上村芳三,河野恵宣,幡手泰雄: "低温プラズマグラフト重合法を利用した機能性高分子ミクロスフェアの開発-タンパク質の分離を目指した表面の高機能化を例として-"ケミカルエンジニヤリング. 45・2. 7-13 (2000)

Masahiro Yoshida、Hidekazu Yoshizawa、Yoshizo Uemura、Yoshinobu Kono、Yasuo Hatate：“利用低温等离子体接枝聚合开发功能性聚合物微球 - 用于蛋白质分离的高度功能化表面的示例”-《化学工程》。45・2.7- 13 (2000)

M.Yoshida, X.Fan, Y.Uemura, H.Yoshizawa, T.Itahara, Y.Kawano, Y.Hatate: "Preparation of side-chain liquid crystalline polymer microspheres, Development of polymeric microsphere with liquid crystalline response"Kagakukogaku symposium series. 73. 121-124 (2

M.Yoshida、X.Fan、Y.Uemura、H.Yoshizawa、T.Itahara、Y.Kawano、Y.Hatate：“侧链液晶聚合物微球的制备，具有液晶响应的聚合物微球的开发”化学工学研讨会

M.Yoshida,X.Fan,H.Yoshizawa,T.Itahara,Y.Kawano,Y.Uemura,Y.Hatate: "Preparation of microspheres with liquid crystal responses"Chemical Engineering Communications. (in press). (2001)

M.Yoshida、X.Fan、H.Yoshizawa、T.Itahara、Y.Kawano、Y.Uemura、Y.Hatate：“具有液晶响应的微球的制备”化学工程通讯。