Physical Properties of 8-Substituted 5,7-Dichloro-2-Styrylquinolines as Potential Light Emitting Materials
作者:Grace Shiahuy Chen、Rahul Subhash Talekar、Ken-Tsung Wong、Liang-Chen Chi、Ji-Wang Chern
DOI:10.1002/jccs.200700198
日期:2007.12
solvents, whereas the emission spectra showed pronounced red shifts with increasing solvent polarity, suggesting the intramolecular charge transfer character of the emission state. Compounds 4 and 5 can emit lights from blue to green color in different solvents. The solvent polarity dependent electronic transitions are attributed to efficient intramolecular charge transfer (ICT) processes, in which the
合成并研究了 5,7-二氯-2-苯乙烯基喹啉 (1) 的衍生物,该衍生物在喹啉部分的 8 位用甲基醚 (4, DCSQM) 或乙酸盐 (5, DCSQA) 进行了修饰。两种化合物都表现出高热稳定性(Td > 320 °C)。DCSQM 和 DCSQA 的紫外-可见吸收在不同溶剂中仅略有不同,而发射光谱显示随着溶剂极性的增加而出现明显的红移,表明发射态的分子内电荷转移特征。化合物 4 和 5 在不同的溶剂中可以发出从蓝色到绿色的光。依赖溶剂极性的电子跃迁归因于有效的分子内电荷转移 (ICT) 过程,其中 HOMO 和 LUMO 分别位于苯乙烯基环和喹啉基部分上。