PREPARATION OF COLLOIDAL GOLD BY PHOTOREDUCTION OF AUCL4--CATIONIC SURFACTANT COMPLEXES

被引：181

作者：

TORIGOE, K ^{[1
]}

ESUMI, K ^{[1
]}

机构：

[1] SCI UNIV TOKYO, FAC SCI,INST COLLOID & INTERFACE SCI, DEPT APPL CHEM,SHINJUKU KU, TOKYO 162, JAPAN

来源：

LANGMUIR | 1992年 / 8卷 / 01期

关键词：

D O I：

10.1021/la00037a013

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Colloidal gold has been prepared by UV irradiation (lambda = 253.7 nm) of some water-insoluble complexes formed between AuCl4- and cationic surfactants dodecylpyridinium chloride (DPCl), hexadecylpyridinium chloride (CPCl), dodecyltrimethylammonium chloride (DTAC), and hexadecyltrimethylammonium chloride (CTAC). Optical absorption spectra reveal that the UV irradiation brings about the photolysis of the complexes, prior to the reduction of AuCl4-. The remarkable effect of the length of hydrocarbon chain on the aggregation of gold particles is observed. Pyridinium surfactants incorporate the reduction of AuCl4- through the photooxidation of the surfactants themselves. CPCl is the most appropriate for producing monodispersed ultrafine particles of gold.

引用

页码：59 / 63

页数：5

共 33 条

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