Ag and au monometallic and bimetallic colloids: Morphogenesis in amphiphilic block copolymer solutions

被引：80

作者：

Sakai, Toshio ^{[1
]}

Alexandridis, Paschalis ^{[1
]}

机构：

[1] SUNY Buffalo, Dept Chem & Biol Engn, Buffalo, NY 14260 USA

来源：

CHEMISTRY OF MATERIALS | 2006年 / 18卷 / 10期

关键词：

D O I：

10.1021/cm051757y

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：

We report here a facile synthesis of Ag colloids with various morphologies (e. g., spherical nanoparticles, plates, wires) through autoreduction of silver nitrate (AgNO3) in formamide solutions containing poly(ethylene oxide)-poly(propylene oxide) (PEO-PPO) block copolymers at similar to 100 degrees C. The PEO-PPO amphiphilic block copolymers act in tandem as reducing, stabilizing, and morphogenic agents. Judicious selection of conditions leads to spherical Au-Ag core-shell nanoparticles or Ag-Au bimetallic nanonetworks (e.g., spherical Au or Ag nanoparticles connected by Ag or Au nanowires, respectively) that are generated in the same solution ("one pot") without additional agents and/or energy input.

引用

页码：2577 / 2583

页数：7

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