4-二氰乙烯基-N,N-二甲基苯胺与不同表面活性剂的相互作用

doi:10.7517/j.issn.1674-0475.2007.05.333

影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (5): 333-339.DOI: 10.7517/j.issn.1674-0475.2007.05.333

4-二氰乙烯基-N,N-二甲基苯胺与不同表面活性剂的相互作用

王金玲, 郭祥峰, 贾丽华

齐齐哈尔大学, 化学与化工学院, 黑龙江, 齐齐哈尔, 161006

收稿日期:2006-11-15 修回日期:2007-04-11 出版日期:2007-09-23 发布日期:2007-09-23
通讯作者: 郭祥峰(1963- ),男,教授,主要从事表面活性剂和荧光分子探针方面的研究,通讯联系人,电话:0452-2742563,E-mail:xfguo@163.com.
基金资助:
国家自然科学基金(20572056);教育部(205040)资助项目

The Interaction Between 4-Dicyanovinyl-N,N-dimethylaniline with Surfactants

WANG Jin-ling, GUO Xiang-feng, JIA Li-hua

College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, Heilongjiang, P. R. China

Received:2006-11-15 Revised:2007-04-11 Online:2007-09-23 Published:2007-09-23

摘要/Abstract

摘要： 用光谱法研究了荧光分子4-二氰乙烯基-N,N-二甲基苯胺(DCVA)与十二烷基硫酸钠(SDS)、聚氧乙烯(23)月桂醚(BRIJ35)、十二烷基三甲溴化铵(DTAB)胶束间的相互作用.与在水中相比,在上述3类表面活性剂溶液中探针的荧光强度分别增加到3.3、5.4和5.1倍;最大发射波长随表面活性剂浓度的增加分别蓝移了5、11和9nm.由此可知,DCVA在DTAB和BRIJ35胶束中所处微环境的极性相似,而在SDS胶束中DCVA所处微环境的极性较大.通过DCVA在3种表面活性剂溶液中的荧光强度,计算出了DCVA与其胶束的结合常数分别为1.7×10³、1.4×10³和8.8×10².

关键词: 表面活性剂, 荧光, 胶束, 4-二氰乙烯基-N,N-二甲基苯胺, 探针

Abstract: Since 4-dicyanovinyl-N,N-dimethylaniline (DCVA) is a prototype class of organic donor-acceptor compound, which is sensitive to microenvironmental properties such as polarity, viscosity and hydrogen bonding capacity. Interactions of DCVA with sodium dodecylsulphate (SDS), dodecyltrimethylammonium bromide (DTAB) ,and polyoxythylene (23) laurylether (BRIJ35) have been investigated by measuring the fluorescent spectra of DCVA in aqueous solutions of varying concentrations surfactants. The fluorescent intensities of DCVA are enhanced approximately 5.1-fold, 5.4-fold,and 3.3-fold by DTAB, BRIJ 35 ,and SDS micelles compared with that in aqueous solution, as well as the emission maximum wavelengths of DCVA blue-shift 5, 11,and 9 nm, respectively. In addition, according to the emission maximum wavelengths of DCVA in micelles, the microenvironment polarities of binding sites of DCVA in DTAB and BRIJ 35 micelles are similar, but that of DCVA in SDS micelle is obviously higher. The binding constants are calculated by the fluorescence intensities of DCVA in the three kinds of micelles to be 1.7×10³,1.4×10³,and 8.8×10²,respectively.

Key words: surfactant, fluorescence, micelles, 4-dicyanovinyl-N,N-dimethylaniline, probe

中图分类号:

O648

王金玲, 郭祥峰, 贾丽华. 4-二氰乙烯基-N,N-二甲基苯胺与不同表面活性剂的相互作用[J]. 影像科学与光化学, 2007, 25(5): 333-339.

WANG Jin-ling, GUO Xiang-feng, JIA Li-hua. The Interaction Between 4-Dicyanovinyl-N,N-dimethylaniline with Surfactants[J]. Imaging Science and Photochemistry, 2007, 25(5): 333-339.

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4-二氰乙烯基-N,N-二甲基苯胺与不同表面活性剂的相互作用

The Interaction Between 4-Dicyanovinyl-N,N-dimethylaniline with Surfactants

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