三种偶氮化合物的合成及三阶非线性光学性能

文章选取具有非线性光学活性的偶氮化合物作为研究对象,合成了一组含不同取代基和不同推-拉电子结构的偶氮化合物,并通过红外光谱、紫外-可见吸收光谱、元素分析、核磁共振氢谱等方法对所合成的偶氮化合物结构进行了表征;用单光束Z-扫描的方法对所合成的偶氮化合物的三阶非线性光学性能进行了测试,并结合理论计算分析研究了分子结构对偶氮化合物三阶非线性光学性能的影响。

Synthesis and Third-order Nonlinear Optical Properties of Three Azo Compounds

Some nonlinear optical （NLO）-active aromatic azo compounds were selected to be studied in this paper. A series of azo compounds containing different substituent group and different push-pull group were synthesized and their chemical structures were characterized by FT-IR, UV-Vis, elemental analysis and tH NMR, etc.. The third-order NLO properties of azo compounds were measured by single-beam Z-scan technique. The third-order NLO susceptibility of each compound was calculated on the basis of DFT/B3LYP/6-31G quantum chemical method. The influence between the molecular structure and the third-order NLO properties of azo compounds was studied.