稳态荧光探针法研究对-烷基-苄基聚氧乙烯醚羧酸甜菜碱的聚集行为

doi:10.7517/j.issn.1674-0475.2013.03.006

影像科学与光化学 ›› 2013, Vol. 31 ›› Issue (3): 215-221.DOI: 10.7517/j.issn.1674-0475.2013.03.006

稳态荧光探针法研究对-烷基-苄基聚氧乙烯醚羧酸甜菜碱的聚集行为

董林芳¹, 徐志成¹, 曹绪龙², 王其伟², 张磊¹, 张路¹, 赵濉¹

1. 中国科学院理化技术研究所,北京 100190;
2. 中国石化胜利油田分公司地质科学研究院,山东东营 257015

收稿日期:2012-11-23 修回日期:2013-01-22 出版日期:2013-05-15 发布日期:2013-05-15
通讯作者: 赵濉,E-mail:zhaosui@mail.ipc.ac.cn.
基金资助:
国家科技重大专项(2011ZX05011-004).

The Study of Aggregation Properties of p-(n-Alkyl)-benzyl Polyoxyethylene Ether Carboxybetaine by Steady-State Fluorescence

DONG Lin-fang¹, XU Zhi-cheng¹, CAO Xu-long², WANG Qi-wei², ZHANG Lei¹, ZHANG Lu¹, ZHAO Sui¹

1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China;
2. Geological Scientific Research Institute, Shengli Oilfield Company of SINOPEC, Dongying 257015, Shandong, P.R. China

Received:2012-11-23 Revised:2013-01-22 Online:2013-05-15 Published:2013-05-15

摘要/Abstract

摘要： 利用荧光探针法和表面张力法测定了一类疏水基中含有苯基的新型甜菜碱两性离子表面活性剂对-烷基-苄基聚氧乙烯醚羧酸甜菜碱(ABECB)的临界胶团浓度(cmc)、胶团微极性和表面张力(γ_cmc).研究结果表明,荧光探针(芘)法可用来测定这类表面活性剂的临界胶团浓度(cmc),且测定结果与表面张力法(吊片法)接近;ABECB具有较低的cmc和γ_cmc值,表明此类表面活性剂具有优良的表面活性; 胶团的微极性随着疏水链长的增大而略微减小,氧乙烯(EO)单元数的增大对ABECB胶团核内的微极性影响不明显.

关键词: 对-烷基-苄基聚氧乙烯醚羧酸甜菜碱, 稳态荧光探针, 临界胶团浓度, 胶团微极性, 表面张力

Abstract: The values of cmc, micelle micropolarity and γ_cmc of p-(n-alkyl)-benzyl polyoxyethy-lene ether carboxybetaine (ABECB) have been measured by fluorescence and Wilhelmy-plate method. It indicated that probe (pyrene) fluorescence emission spectra method could be used to determine the critical micelle concentration (cmc) of p-(n-alkyl)-benzyl polyoxyethylene ether carboxybetaine, and the results are compatible with that of Wilhelmy-plate method. The values of cmc and γ_cmc show that these surfactants have high surface activity. The micellar micropola-rity was observed to decrease, as the change of carbon atom number of the substituted hydrophobic chain of benzene ring, while the effect of increasing polyoxyethylene number on micellar micropolarity is little.

Key words: p-(n-alkyl)-benzyl polyoxyethylene ether carboxybetaine, probe fluorescence emission spectra, critical micelle concentration, micellar micropolarity, surface tension

中图分类号:

O647

董林芳, 徐志成, 曹绪龙, 王其伟, 张磊, 张路, 赵濉. 稳态荧光探针法研究对-烷基-苄基聚氧乙烯醚羧酸甜菜碱的聚集行为[J]. 影像科学与光化学, 2013, 31(3): 215-221.

DONG Lin-fang, XU Zhi-cheng, CAO Xu-long, WANG Qi-wei, ZHANG Lei, ZHANG Lu, ZHAO Sui. The Study of Aggregation Properties of p-(n-Alkyl)-benzyl Polyoxyethylene Ether Carboxybetaine by Steady-State Fluorescence[J]. Imaging Science and Photochemistry, 2013, 31(3): 215-221.

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稳态荧光探针法研究对-烷基-苄基聚氧乙烯醚羧酸甜菜碱的聚集行为

The Study of Aggregation Properties of p-(n-Alkyl)-benzyl Polyoxyethylene Ether Carboxybetaine by Steady-State Fluorescence

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