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首页> 外文期刊>Macromolecules >BISTABLE ELECTRO-OPTICAL FAST SWITCHING FOR INDUCED SMECTIC (LIQUID CRYSTALLINE POLYMER/LIQUID CRYSTALS) AND (PSEUDO LIQUID CRYSTALLINE COPOLYMER/LIQUID CRYSTALS) COMPOSITE SYSTEMS
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BISTABLE ELECTRO-OPTICAL FAST SWITCHING FOR INDUCED SMECTIC (LIQUID CRYSTALLINE POLYMER/LIQUID CRYSTALS) AND (PSEUDO LIQUID CRYSTALLINE COPOLYMER/LIQUID CRYSTALS) COMPOSITE SYSTEMS

机译：双稳态电光快速开关，适用于感应的（液态晶体聚合物/液体晶体）和（伪液态晶体共聚物/液体晶体）复合系统

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Reversible and bistable electra-optical switching characteristics of induced smectic composite systems composed of a side chain nematic liquid crystalline polymer (nematic LCP) and its copolymer with weak polar methoxy terminal groups in the sidechains and low molecular weight nematic liquid crystals (nematic LCs) with each strong polar cyano end have been investigated. The liquid crystalline copolymer (LCcoP) with weak polar methoxy terminal. groups in the side chains was used to improve the response speed at room temperature for the bistable and reversible light switching of the binary composite system. Since LCcoP with 52.5 mol % substituted mesogenic side chains did not exhibit mesophase characteristics, this LCcoP was named as pseudo LCcoP in the present study. The(pseudo LCcoPematic LCs) composite system showed an induced smectic phase over a wide range of mixing concentration and temperature. A reversible and bistable electro-optical switching with a short response time (similar to 100 ms) was realized for the induced smectic binary composite system upon the application of an appropriate electric field at room temperature. Also, the binary composite system showed a reversible and bistable electro-optical switching based on the sign reversal of the dielectric anisotropy upon the application of ac electric fields with high (similar to kHz) and higher (similar to 100 kHz) driving frequencies. [References: 22]
机译：由侧链向列型液晶聚合物（向列型LCP）及其在侧链中具有弱极性甲氧基末端基团的共聚物和低分子量向列型液晶（向列型LC）组成的诱导近晶复合体系的可逆和双稳态电光转换特性已研究了每个强极性氰基末端。具有弱极性甲氧基末端的液晶共聚物（LCcoP）。侧链中的基团用于提高室温下二元复合系统的双稳态和可逆光切换的响应速度。由于具有52.5 mol％取代的介晶侧链的LCcoP不显示中间相特征，因此本研究将该LCcoP命名为伪LCcoP。 （伪LCcoP /向列型LC）复合系统在广泛的混合浓度和温度范围内均表现出近晶相。通过在室温下施加适当的电场，对于感应近晶二元复合系统实现了具有短响应时间（类似于100 ms）的可逆双稳态电光开关。同样，当施加具有高（类似于kHz）和较高（类似于100kHz）驱动频率的交流电场时，基于介电各向异性的符号反转，该二元复合系统显示出可逆和双稳态电光开关。 [参考：22]

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