三种双苯并咪唑型荧光增白剂的合成及荧光性能研究  

Synthesis and fluorescence properties of three kinds of bis-benzimidazole fluorescent whitening agent

作　　者：庄俊涛[1] 钱永[1,2] 吴磊[1] 王建军[1] 龚菁[1] 杨海[1] 

机构地区：[1]苏州科技大学化学与生物工程学院,江苏苏州215009 [2]江苏省环境功能材料重点实验室,江苏苏州215009

出　　处：《应用化工》2011年第12期2075-2079,共5页Applied Chemical Industry

基　　金：环境化学与生态毒理学国家重点实验室开放基金(KF2010-11);住房和城乡建设部2011年科学技术项目计划(2011-K4-2)

摘　　要：分别以马来酸、对苯二甲酸、酒石酸和邻苯二胺为起始原料,合成了3种双苯并咪唑型荧光增白剂1,2-二(2-苯并咪唑基)乙烯(a)1,4,-二(2-苯并咪唑基)苯(b)和1,2-二(2-苯并咪唑基)-1,2-乙二醇(c)。考察了微波功率、反应时间、原料配比等反应条件对微波辅助合成(a)和(b)收率的影响。采用紫外吸收及荧光发射光谱研究了产物的荧光性能,结果发现,产物在日光紫外波段均有较强的紫外吸收(λmax分别为361,347,343 nm),在各自最佳激发波长下激发均有较强的蓝紫色荧光(最大荧光发射波长分别为416,3944,17 nm),说明它们在荧光增白剂方面具有很好的应用前景。Three kinds of bis-benzimidazole fluorescent whitening agents [ 1,2-bis-（ 1H-benzoimidazol-2- yl） -ethylene （ a）, 1,4-bis-（ 1H-hen：,.oimidazol-2-yl ） -benzene （ b ） and 1,2-bis-（ 1H-benzoimidazol-2- yl）-ethane-1 ,2-doil （c） ] were synthesized using o-phenylenediamine and maleic acid, terephthalic acid, tartaric acid and as raw materials, respectively. The effect of microwave power, reaction time and the ratio of raw materials on the yields of （a） and （b） by microwave-assisted synthesis were investigated. The flu- orescent-emitting performance was studied by ultraviolet absorption spectra and fluorescence emission spectra. It was found that each of the products had strong UV absorption with λmax, （361,347,343 nm, respectively） in sun UVA and had strong blue-violet fluorescence with the emitting λmax, （416,394 , 417 nm,respectively） under their own optimal exciting wavelength. The results showed that these com- pounds had a good prospect in the field of fluorescent whitening agents.

关 键 词：荧光增白剂 双苯并咪唑 合成 微波 

分 类 号：TQ252.3[化学工程—有机化工] TQ610.495