Tuning of the photophysical and electrochemical properties of symmetric and asymmetric conjugated thiophenoazomethines
作者:Shengzhen Liu、Ti Wu、Qi Zhu、Jialing Pu、Guangxue Chen、Weimin Zhang、Zhongxiao Li
DOI:10.1039/c8ra00570b
日期:——
have a great effect on the electronic absorption and energy levels of the conjugated compounds, particularly the effect of terminal groups. The terminal withdrawing and donating groups of thiophenoazomethines led to the formation of an electronic push–pull, push–push and pull–pull system, which can perturb the electronic transitions between the ground and excited states. The flexible chain substituents
通过容易获得的胺与各种醛的反应,实现了通往对称和不对称噻吩并亚甲基的合成路线。对该方法得到的一系列噻吩并亚甲基的研究表明,末端基团和共轭程度对共轭化合物的电子吸收和能级有很大影响,尤其是末端基团的影响。噻吩并亚甲基的末端撤离和供体基团导致形成电子推拉、推拉和拉拉系统,这可以扰乱基态和激发态之间的电子跃迁。噻吩单元上的柔性链取代基提高了其溶解度,也导致了红移吸收,但对能级的影响有限。