Facile synthesis and photo-physical properties of cyano-substituted styryl derivatives based on carbazole/phenothiazine
作者:Mingzhu Lu、Yulan Zhu、Kuirong Ma、Li Cao、Kun Wang
DOI:10.1016/j.saa.2012.04.090
日期:2012.9
Four new cyano-substituted styryl derivatives based on carbazole and phenothiazine were facilely synthesized by conventional Knoevenagel condensation and well characterized. The UV-vis spectra of these dyes showed the lowest-energy absorption bands were mainly caused by the HOMO-LUMO one-electron promotion as conformed by TD-DFT calculations. The thermogravimetric analysis showed these dyes were thermally
通过常规的Knoevenagel缩合反应可轻松合成四种基于咔唑和吩噻嗪的氰基取代的苯乙烯基衍生物,并进行了良好的表征。这些染料的紫外可见光谱显示最低的能量吸收带主要是由TD-DFT计算证明的HOMO-LUMO单电子促进作用引起的。热重分析表明,这些染料在高达350°C的温度下具有热稳定性。还研究了在不同极性溶剂中的紫外可见吸收光谱和荧光发射光谱,这些染料表现出不同寻常的大斯托克斯位移。