Polymerized assemblies of cationic gemini surfactants in aqueous solution

被引:23
作者
Abe, Masahiko [1 ,2 ]
Koike, Takaaki [1 ]
Nishiyama, Hironori [1 ]
Sharma, Suraj Chandra [1 ]
Tsubone, Kazuyuki [1 ]
Tsuchiya, Koji [1 ]
Sakai, Kenichi [1 ]
Sakai, Hideki [1 ,2 ]
Shchipunov, Yury A. [3 ]
Schmidt, Judith [4 ]
Talmon, Yeshayahu [4 ]
机构
[1] Tokyo Univ Sci, Fac Sci & Technol, Dept Pure & Appl Chem, Chiba 2788510, Japan
[2] Tokyo Univ Sci, Inst Colloid & Interface Sci, Shinjuku Ku, Tokyo 1628601, Japan
[3] Russian Acad Sci, Inst Chem, Far E Dept, Vladivostok 690022, Russia
[4] Technion Israel Inst Technol, Dept Chem Engn, IL-32000 Haifa, Israel
关键词
Gemini surfactant; Polymerization; Cryo-TEM; Vesicular aggregates; FLUORESCENCE;
D O I
10.1016/j.jcis.2008.11.011
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A variety of polymerized assemblies of cationic gemini surfactants has been demonstrated as a function of the electrolyte concentration in aqueous solution. The gemini surfactant consists of two cationic monomeric surfactants linked with an ethylene spacer at the level of the quaternary ammonium groups. Polymerizable methacryloxy groups are covalently attached to the terminal of the hydrocarbon chains. In the lower electrolyte concentration region, radical polymerization results in the formation of spherical aggregates [Langmuir 22 (2006) 8293]. However, in the higher electrolyte concentration region, elongated tubular hollow assemblies are observed with transmission electron microscopy, as a result of polymerization of vesicular hollow assemblies spontaneously formed in the aqueous solution. These experimental results suggest that it is possible to prepare different shapes of polymerized assemblies by changing the electrolyte concentration. (C) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码:250 / 253
页数:4
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