水杨醛缩芳胺类Schiff碱的无溶剂法合成及其光学性质  

Solvent-free Synthesis and Optical Properties of Schiff Bases Derived from Salicylaldehyde and Substituted Anilines

作　　者：唐子龙[1,2] 颜林[1,2] 刘汉文[1,2] 欧晓明 李丽[1,2] 

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201 [2]湖南科技大学理论化学与分子模拟省部共建教育部重点实验室,湖南湘潭411201 [3]湖南化工研究院,湖南长沙410007

出　　处：《精细化工中间体》2012年第3期26-30,共5页Fine Chemical Intermediates

基　　金：国家科技支撑计划项目子课题(2011BAE06B01);湖南省教育厅重点项目(No.10A034);湖南省自然科学基金项目(11JJ3016);理论化学教育部重点实验室开放基金课题(LKF1103)

摘　　要：以水杨醛和取代苯胺为原料,在无溶剂条件下合成了一系列Schiff碱,该方法不仅收率高(82%~95%),而且反应时间短,对环境污染少。用1H NMR、13C NMR和IR等对产物结构进行了确证。同时还研究了这类Schiff碱的紫外和荧光性质,化合物均具有较强的荧光发射光谱,发射峰值波长(λem)在470～524 nm。当苯环邻、对位引入供电子基时,发射波长明显红移,而当间位引人供电子基时,发射波长蓝移。苯环上引入吸电子取代基时,发射波长蓝移。A series of Schiff bases were synthesized in 82%~95% yields from salicylaldehyde and substituted anilines in solvent-free systems.All the obtained compounds were characterized with 1H NMR,13C NMR and IR.Their UV-Vis and fluorescent properties were also studied,which demonstrated that the Schiff bases showed stronger fluorescence intensity at em = 470～524 nm.When an electron-donating group was introduced at the ortho-or para-position on the benzene ring,a red-shifted em was observed,while at the meta-position induced a blue-shifted em.When an electron-withdrawing group was introduced onto the benzene ring,a blue-shifted emwas observed.

关 键 词：无溶剂法 SCHIFF碱 合成 荧光 紫外 

分 类 号：O62[理学—有机化学]