Scalable Routes to Janus Au-SiO2 and Ternary Ag-Au-SiO2 Nanoparticles

被引：171

作者：

Chen, Tao ^{[1
]}

Chen, Gang ^{[1
]}

Xing, Shuangxi ^{[1
]}

Wu, Tom ^{[2
]}

Chen, Hongyu ^{[1
]}

机构：

[1] Nanyang Technol Univ, Div Chem & Biol Chem, Singapore 637371, Singapore

[2] Nanyang Technol Univ, Div Phys & Appl Phys, Singapore 637371, Singapore

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 13期

关键词：

COLLOIDAL PARTICLES; SURFACE MODIFICATION; GOLD NANOPARTICLES; OPTICAL-PROPERTIES; DIMERS; SILVER; NANOSTRUCTURES; HETERODIMERS; INTERFACES; DEPOSITION;

D O I：

10.1021/cm101155v

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：

A study was conducted to develop approach to control silica deposition on partial surface of Au nanospheres (NS). The selective deposition was driven by the partitioned surface functionalities on AuNSs through competitive ligand coordination. AgNSs or Ag nanorods (NRs) were grown on the exposed Au surface, generating ternary Ag-Au-SiO2 structures and reducing the symmetry. Tetraethyl orthosilicate (TEOS) was used as silica precursor to conduct the investigations. The surface of the AuNSs was partially encapsulated with SiO2 after its hydrolysis and subsequent condensation catalyzed by ammonia.

引用

页码：3826 / 3828

页数：3

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