| 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 |
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| 引用本文： | 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. DOI: 10.7517/j.issn.1674-0475.2010.06.425 |
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| 作者姓名： | 旷爱忠 陈晓阁 姜小明 赵濉 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金，贵州省科技支撑计划项目，贵州省科学技术基金，瓮福(集团)有限责任公司博士后基金 |
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| 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(Nagg)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、Nagg、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,Nagg增大,胶团微极性减小.当氯化钠浓度增大时,Nagg增大,胶团微极性减小.
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| 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 |
| 收稿时间： | 2010-05-26 |
Study of Aggregation Properties of Anionic Gemini Surfactants in Aqueous Solution by Fluorescence Method |
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| 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. DOI: 10.7517/j.issn.1674-0475.2010.06.425 |
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| Authors: | KUANG Ai-zhong CHEN Xiao-ge JIANG Xiao-ming ZHAO Sui |
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| Affiliation: | 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 |
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| 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(Nagg) 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 Nagg increased and the polarity of the probe environment decreased.It was also found that the Nagg increased with the increasing of the concentration of NaCl. |
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| Keywords: | fluorescence critical micelle concentration aggregation number of micelle Gemini surfactants |
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