ABSTRACT A series of polymer dispersed liquid crystal (PDLC) films with thiol-isocyanate-ene ternary network were successfully prepared by nucleophile-initiated thiol-ene click reaction and thiol-isocyanate coupling reaction. The effects of isocyanate content, reaction temperature and liquid crystal (LC) content on the electro-optical properties of PDLC were investigated. It is found that with the decrease of isocyanate content or reaction temperature, there are lower voltages as well as higher transmittance. When the LC content increases, the polymer structure changes and the phase inversion occurs. The results indicate that PDLC films with good electro-optical properties could be prepared by nucleophile-initiated thiol-ene click reaction and thiol-isocyanate coupling reaction, providing a new idea for PDLC preparation. Graphical abstract

中文翻译：

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亲核引发的硫醇-烯点击反应和硫醇-异氰酸酯偶联反应制备的具有硫醇-异氰酸酯-烯三元网络的聚合物分散液晶薄膜的光电性能研究

摘要 通过亲核试剂引发的硫醇-烯点击反应和硫醇-异氰酸酯偶联反应，成功制备了一系列具有硫醇-异氰酸酯-烯三元网络的聚合物分散液晶（PDLC）薄膜。研究了异氰酸酯含量、反应温度和液晶(LC)含量对PDLC光电性能的影响。发现随着异氰酸酯含量或反应温度的降低，电压降低，透光率升高。当LC含量增加时，聚合物结构发生变化，发生相转化。结果表明，通过亲核试剂引发的硫醇-烯点击反应和硫醇-异氰酸酯偶联反应可以制备出具有良好光电性能的PDLC薄膜，为PDLC的制备提供了新思路。图形概要