Control of dispersion-coagulation behavior of Au nanoparticles capped with azobenzene-derivatized alkanethiol in a mixed chloroforrn-ethanol solvent

被引：9

作者：

kawai, Takeshi ^{[1
]}

Nakamura, Satoru ^{[1
]}

Sumi, Akihiro ^{[1
]}

Kondo, Takeshi ^{[1
]}

机构：

[1] Tokyo Univ Sci, Dept Ind Chem, Shinjuku Ku, Tokyo 1628601, Japan

来源：

THIN SOLID FILMS | 2008年 / 516卷 / 24期

关键词：

Au nanoparticles; Azobenzene; Self-assembled monolayers; Photoisomerization;

D O I：

10.1016/j.tsf.2007.11.099

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Self-assembled monolayers (SAMs) of azobenzene-derivatived alkanethiol, 5-[2-methyl-4-(4-octyl-phenylazo)-phenoxy]-pentane-1-thiol (8AM5SH), were prepared on flat Au substrates and Au nanoparticles. The photoisomerization from trans-8AM5SH to cis-8AM5SH was 22% for flat Au substrates and 60% for Au nanoparticles. Further Au nanoparticles capped with cis-8AM5SH were found to disperse in a mixed solvent of chloroform and ethanol (CHCl3: ethanol = 1:3), whereas those capped with trans-8AM5SH coagulated in the solvent. However, the Au nanoparticles dispersed in chloroform, regardless of whether 8AM5SH was in the trans or cis conformation. (c) 2007 Elsevier B.V. All rights reserved.

引用

收藏

页码：8926 / 8931

页数：6

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