荧光探针法研究新型Gemini表面活性剂在水溶液中的聚集行为

doi:10.7517/j.issn.1674-0475.2010.06.425

影像科学与光化学 ›› 2010, Vol. 28 ›› Issue (6): 425-432.DOI: 10.7517/j.issn.1674-0475.2010.06.425

荧光探针法研究新型Gemini表面活性剂在水溶液中的聚集行为

旷爱忠¹, 陈晓阁¹, 姜小明^1,2, 赵濉²

1. 贵州大学, 化学与化工学院, 贵州, 贵阳, 550025;
2. 中国科学院, 理化技术研究所, 北京, 100190

收稿日期:2010-05-26 修回日期:2010-06-29 出版日期:2010-11-23 发布日期:2010-11-23
通讯作者: 小明, 男, 博士.
基金资助:
国家自然科学基金(20861003);贵州省科技支撑计划项目(黔科合GY字[2010]3014);贵州省科学技术基金([2007]2012);瓮福(集团)有限责任公司博士后基金项目(61987)

Study of Aggregation Properties of Anionic Gemini Surfactants in Aqueous Solution by Fluorescence Method

KUANG Ai-zhong¹, CHEN Xiao-ge¹, JIANG Xiao-ming^1,2, ZHAO Sui²

1. College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, P.R.China;
2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China

Received:2010-05-26 Revised:2010-06-29 Online:2010-11-23 Published:2010-11-23

摘要/Abstract

摘要： 以芘为荧光探针、二苯酮为猝灭剂,用稳态荧光探针法测定了新型Gemini表面活性剂的临界胶团浓度(CMC)、胶团聚集数(N_agg)及胶团微极性.研究了Gemini表面活性剂结构和氯化钠浓度对CMC、N_agg、胶团微极性的影响.结果表明,新型Gemini表面活性剂的CMC比常规表面活性剂的CMC低1—2个数量级.当疏水基碳原子数增加时,CMC依次降低,N_agg增大,胶团微极性减小.当氯化钠浓度增大时,N_agg增大,胶团微极性减小.

关键词: 稳态荧光猝灭, 临界胶团浓度, 胶团聚集数, Gemini表面活性剂

Abstract: The aggregation properties of anionic gemini surfactants in the aqueous solution were studied by fluorescence method.The values of the critical micelle concentration(CMC),aggregation number of micelle(N_agg) and the polarity of the probe environment of the anionic gemini surfactants were determined.The values of CMC are smaller than those of the corresponding conventional surfactants.When the alkyl chain length of the anionic gemini surfactants increased,the values of CMC decreased.And the values of N_agg increased and the polarity of the probe environment decreased.It was also found that the N_agg increased with the increasing of the concentration of NaCl.

Key words: fluorescence, critical micelle concentration, aggregation number of micelle, Gemini surfactants

中图分类号:

旷爱忠, 陈晓阁, 姜小明, 赵濉. 荧光探针法研究新型Gemini表面活性剂在水溶液中的聚集行为[J]. 影像科学与光化学, 2010, 28(6): 425-432.

KUANG Ai-zhong, CHEN Xiao-ge, JIANG Xiao-ming, ZHAO Sui. Study of Aggregation Properties of Anionic Gemini Surfactants in Aqueous Solution by Fluorescence Method[J]. Imaging Science and Photochemistry, 2010, 28(6): 425-432.

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荧光探针法研究新型Gemini表面活性剂在水溶液中的聚集行为

Study of Aggregation Properties of Anionic Gemini Surfactants in Aqueous Solution by Fluorescence Method

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