Clusters of amphiphilic colloidal spheres

被引：243

作者：

Hong, Liang ^{[1
]}

Cacciuto, Angelo ^{[1
]}

Luijten, Erik ^{[1
]}

Granick, Steve ^{[1
]}

机构：

[1] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA

来源：

LANGMUIR | 2008年 / 24卷 / 03期

关键词：

D O I：

10.1021/la7030818

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Orientation-dependent interactions can drive unusual self-assembly of colloidal particles. This study, based on combined epifluorescence microscopy and Monte Carlo simulations, shows that amphiphilic colloidal spheres, hydrophobic on one hemisphere and charged on the other, assemble in water into extended structures not formed by spheres of uniform surface chemical makeup. Small, compact clusters each comprised of less than 10 of these Janus spheres link up, as increasing salt concentration enhances electrostatic screening, into wormlike strings.

引用

页码：621 / 625

页数：5

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