Aggregation behavior of an amino acid-derived bolaamphiphile and a conventional surfactant mixed system

被引：16
作者：
Chen, Yuxia [1 ]
Liu, Yan [1 ]
Guo, Rong [1 ]
机构：
[1] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2009年 / 336卷 / 02期
关键词：
Bolaamphiphile; Aggregation behaviors; DTAB; Hydrogen bond; CATIONIC SURFACTANTS; MICELLE FORMATION; PHASE-BEHAVIOR; HISTIDINE; MIXTURES; NANOPARTICLES; CRYSTALLINE; ADSORPTION; HEADGROUPS; INTERFACE;
D O I：
10.1016/j.jcis.2009.04.012
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：
The aggregation behavior of a mixed system consisting of a novel histidine-derived bolaamphiphile 1,12-dihistidine diaminododecane (H2D) and the conventional surfactant dodecyltrimethylammonium bromide (DTAB) has been investigated. The microstructure of the H2D/DTAB mixture has been identified by means of negative staining-TEM, dynamic light scattering (DLS), fluorescence spectra, FT-Raman spectroscopy, and differential scanning calorimetry (DSC). Rich morphologies are observed in the mixed system of H2D and DTAB over a relatively wide proportion range. At C-DTAB/C-H2D < 12: 1, vesicles are formed in the mixed system. At C-DTAB/C-H2D > 12:1. vesicles and tube-like aggregates coexist, and more tube-like aggregates appear with further increase of C-DTAB/C-H2D. The formation mechanisms of the aggregation with various morphologies at different C-DTAB/C-H2D ratios are further deduced. (C) 2009 Elsevier Inc. All rights reserved.
引用
收藏
页码：766 / 772
页数：7
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