作　　者： ; ; ; ; ;

机构地区： 浙江大学高分子科学与工程学系动物分子营养学教育部重点实验室

出　　处： 《高等学校化学学报》 2006年第11期2209-2212,共4页

摘　　要： 设计合成了外围带咔唑基团的联苯桥联齐聚对苯撑乙烯撑衍生物,用核磁共振氢谱、质谱和元素分析对其结构和纯度进行了表征.热分析测试结果表明:该化合物具有良好的化学结构稳定性和相态稳定性.玻璃化转变温度为142.05℃,热失重开始温度为306℃.退火处理前后的旋涂薄膜的吸收光谱的性状和X射线衍射数据说明该化合物的固体薄膜为无定形薄膜,而且高温下退火4 h没有明显变化.研究结果表明,以联苯桥联结构为中心,外围修饰大体积的咔唑基团的分子设计不仅在减弱分子聚集和抑制π-π相互作用方面取得了良好效果,而且保持了联苯桥联DSB衍生物的结构稳定性. An oligo（phenylene vinylene） with central biphenyl bridge and peripheral carbazole founctionalities was synthesized. The structure and purity were characterized by using ^1H NMR, MS and elementary analysis techniques. Thermal analysis data indicated that the obtained compound possessed both high chemical and morphological stability. The glass transition temperature was 142.05 ℃ ; the mass-loss temperature started at 306 ℃. The observed absorption features and X-ray diffraction patterns suggested an amorphous state of the spin-coating films, and the annealing treatment at 80 ℃ for 4 h did not change the amorphous property. The results above showed that the molecular design of introducing a central biphenyl bridge and bonding peripheral bulky carbazole functionalities can not only effectively decrease the aggregation of chromophores but also keep the stability of biphenyl bridged DSB derivatives.

关 键 词： 联苯桥联 咔唑 固体薄膜 热稳定性

领　　域： [理学] [理学] [理学]