新型氰基取代二苯乙烯衍生物的合成及其光学性质

摘要

A novel D-π-A type cyanostilbene derivative ( M1 ) was synthesized by Knoevenagel reac-tion and Williamson reaction , using 4-( diethylamino ) salicylaldehyde and 4-nitrophenylacetonitrile as materials.A novel D-π-A-D type cyanostilbene derivative ( M2) was obtained by reducing nitro to ami-no from M1, using Na2 S as the reducing agent .The structures were characterized by 1 H NMR, 13 C NMR and FT-IR.The properties of M1 and M2 were investigated by DFT calculation method , UV-Vis and FL.The results indicated that M1 exhibited stronger ICT and solvatochromism perform-ance with obviously separating HOMO/LUMO orbit electron cloud and narrow band gap .%以4-二乙氨基水杨醛和对硝基苯乙腈为原料，经Knoevenagel缩合反应和Williamson反应合成了一个新型的D-π-A型氰基取代二苯乙烯衍生物（M1）；用Na2S将M1硝基还原为氨基，合成了一个新型的D-π-A-D型氰基取代二苯乙烯衍生物（M2），其结构经1H NMR，13C NMR和FT-IR表征。采用量子化学计算法，UV-Vis和FL研究了M1和M2的光学性质。结果表明：M1具有较强的ICT和明显的溶剂生色性质；M1的HOMO和LUMO轨道电子云分离明显，带隙较窄。