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Synthesis and properties of photoisomerizable derivatives of isosorbide and their use in cholesteric filters

机译:异山梨醇的可光异构化衍生物的合成,性质及其在胆甾型过滤器中的应用

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This paper describes the synthesis of photoisomerizable derivatives of isosorbide. These derivatives contain a stilbene or cinnamate moiety and can therefore be used as photoisomerizable chiral compounds in cholesteric liquid-crystalline mixtures. The reflection wavelength of cholesteric layers made from these mixtures is increased by UV irradiation due to the fact that the Z-isomers of these derivatives exhibit a lower helical twisting power than the corresponding E-isomers. The cinnamate derivatives are very suitable for use in cholesteric color filters that find application in liquid-crystal displays.
机译:本文介绍了异山梨醇的光异构化衍生物的合成。这些衍生物包含二苯乙烯或肉桂酸酯部分,因此可以在胆甾型液晶混合物中用作可光异构的手性化合物。由于这些衍生物的Z-异构体比相应的E-异构体显示出较低的螺旋扭曲能力,因此通过紫外线辐照增加了由这些混合物制成的胆甾醇层的反射波长。肉桂酸酯衍生物非常适用于在液晶显示器中得到应用的胆甾型彩色滤光片。

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