4-硝基-4＇-(N,N-二苯基氨基)-1,2-二苯乙烯的固相合成及其光学性质

Solid-state Synthesis and Optical Properties of 4-Nitro-4'-( N,N-diphenyl-amino)-1,2-stilbene

采用固相研磨法,4-(N,N-二苯基氨基)苯甲醛和溴化(4-硝基苯甲基)三苯基膦经Wittig反应合成了一种光功能材料中间体——4-硝基-4'-(N,N-二苯基氨基)-1,2-二苯乙烯(1),收率45.5%,其结构经1H NMR,13C NMR,IR和MS确证。UV-Vis和FL研究结果表明:1在295 nm和400 nm^420 nm处有较强紫外吸收;溶剂极性对1的FL谱图有明显影响,随着溶剂极性增大,出现明显猝灭现象,并发生红移。

A optical functional materials intermediate,4-nitro-4＇-（ N,N-diphenyl-amino）-1,2-stilbene（ 1）,was synthesized by Wittig reaction of triphenylamino formaldehyde with（ 4-nitrobenzyl） triphenylphosphine bromide through solid-state grinding method in the yield of 45. 5%. The structures were confirmed by1H NMR,13C NMR,IR and MS. The optical properties of 1 were investigated by UV and FL. The results showed that λ max of 1 were 295 nm and 400 nm ~ 420 nm. Polarity of solvent makes great effect on the fluorescence spectra of 1. With increasing polarity,the fluorescence intensity of 1 decreases and the fluorescence peaks shift towards long wavelength.