ADSORPTION OF DIOCTADECYLDIMETHYLAMMONIUM CHLORIDE ON SILICA

被引：37
作者：
ESUMI, K [1 ]
SUGIMURA, A [1 ]
YAMADA, T [1 ]
MEGURO, K [1 ]
机构：
[1] SCI UNIV TOKYO,INST COLLOID & INTERFACE SCI,TOKYO 162,JAPAN
来源：
COLLOIDS AND SURFACES | 1992年 / 62卷 / 03期
关键词：
ADSORPTION; DIOCTADECYLDIMETHYLAMMONIUM CHLORIDE; MICROENVIRONMENT; SILICA; VESICLE;
D O I：
10.1016/0166-6622(92)80007-O
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：
Adsorption of dioctadecyldimethylammonium chloride (DODAC) on silica from its vesicle in aqueous solution has been studied. The adsorption isotherm indicates that the interaction between DODAC and silica is strong because of the electrostatic attraction force and that a patch-like bilayer is probably formed. Fluorescence and ESR probe measurements show that the micropolarity of the DODAC adsorbed layer on silica is lower, but its microviscosity is higher, compared to those of the DODAC vesicle in aqueous solution. Further, Yellow OB, a water-insoluble dye, is incorporated in the DODAC adsorbed layer indicating its hydrophobic nature; the incorporated Yellow OB is barely removed by washing with deionized water.
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页码：249 / 254
页数：6
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