Thermal, Mechanical, and Photophysical Properties of Carbazole-Substituted POSS and Ladder Polysilsesquioxane
作者:Albert S Lee、Young Yeol Jo、Seung-Sock Choi、Kyung-Youl Baek、Seung Sang Hwang
DOI:10.1166/jnn.2017.14131
日期:2017.8.1
Through UV-initiated thiol-ene click chemistry, carbazole-substituted ladder-like structured polysilsesquioxane and cage-structured polyhedral oligomeric silsesquioxane (T8-POSS) compounds were synthesized and fully characterized. Perfectly carbazole-substituted T8-POSS was synthesized via post-modifications of a mercaptopropyl T8-POSS, while the ladder polysilsesquioxane was synthesized through a base-catalyzed hydrolysis-polycondensation reaction with a carbazole-substituted trialkoxysilane monomer. Through a comparative evaluation of the thermal, mechanical, and photophysical properties of the synthesized compounds, we demonstrate the utility and superiority of the ladder-like structure over the T8-POSS material.
通过紫外光引发的硫醇-烯点击化学反应,合成了咔唑取代的梯状结构聚硅烷基二氧杂环戊烷和笼状结构的多面体低聚硅烷基二氧杂环戊烷(T8-POSS)化合物,并对其进行了全面表征。完全咔唑取代的 T8-POSS 是通过对巯丙基 T8-POSS 进行后修饰合成的,而梯状聚硅烷基quioxane 则是通过碱催化与咔唑取代的三烷氧基硅烷单体进行水解-缩聚反应合成的。通过对合成化合物的热性能、机械性能和光物理性能进行比较评估,我们证明了阶梯状结构比 T8-POSS 材料更实用、更优越。