The first pushâpull 1,3-dithiol-2-ylidene derivatives containing an azine spacer have been prepared in order to evaluate the effect of the azine bridge on the second-order NLO properties of these compounds, which show µβ(0) values lower than those of similar derivatives endowed with ethylenic spacers. The linear and nonlinear optical properties of these compounds have been studied both experimentally and theoretically by TD-DFT and ab initio CPHF calculations respectively. Moreover, the EâZ photoisomerization of one of these azines is reported.
为了评估氮桥对这些化合物二阶非线性光学特性的影响,我们制备了首批含有氮桥的 1,3-二
硫醇-2-亚基推拉衍
生物,这些化合物的 µβ(0) 值低于含有
乙烯基氮桥的类似衍
生物。通过 TD-DFT 和 ab initio CPHF 计算,分别对这些化合物的线性和非线性光学特性进行了实验和理论研究。此外,还报道了其中一种
叠氮的 EâZ 光异构化现象。