含蒽核心第一代π-共轭不对称树状化合物的光学性质  

Optical Properties of the First Generation π-Conjugate Unsymmetrical Dendrimer with Anthracene Core

作　　者：彭晓春[1] 伍建华[1] 肖竹平[1] 张帆[1] 彭密军[1] 尹红[1] 

机构地区：[1]吉首大学化学化工学院,湖南吉首416000

出　　处：《精细化工》2015年第1期17-21,26,共6页Fine Chemicals

基　　金：湖南省自然科学基金(13JJ2030)~~

摘　　要：对含蒽核心的第一代π-共轭不对称树状化合物PD-G1的光学性质进行研究。研究发现,相对于G-OH,共轭长度的增加导致了其在吸光、荧光发射强度与范围的提升,蒽核部分的吸光强度的增加,显示其能量漏斗效应;荧光淬灭实验表明,能与缺电子化合物硝基苯、富电子化合物对二甲氧基苯形成离子对产生荧光淬灭(淬灭常数分别为144.5,557和169.6 L/mol),说明能同时作为电子受体与电子供体,且对2,4,6-三硝基甲苯(TNT)显示出良好的淬灭响应性,其淬灭常数能达到约557 L/mol,淬灭效率能达到74%,因此,在光捕获、发光及荧光传感材料方面有潜在应用价值。By investigating the optical properties of the first generation π-conjugate unsymmetrical dendrimer with anthracene core（PD-G1）,we found that,compared to the G-OH,the increased conjugate of the conjugate length resulted in the improvement of the range and intensity of absorption and fluorescence emission spectra,indicating an energy funnel effect from the outside branches to the anthracene core.Fluorescence quenching experiment via the formation of ion pairs with the electrondefect compounds nitrobenzene,2,4,6-trinitrotoluene（TNT）,and electron-sufficient compound pdimethoxy benzene indicates that PD-G1 can act as either electron acceptor or donor,and the quenching constants were 144.5,557 and 169.6 L / mol,respectively.The quenching efficiency of TNT for PD-G1 can reach 74%.Hence PD-G1 holds out potential application in manufacturing materials of light harvesting,emission and fluorescent sensor.

关 键 词：不对称共轭树状化合物 光学性质 蒽 荧光淬灭 TNT 功能材料 

分 类 号：O625.1[理学—有机化学]