Oriented crystallization of ultra-thin (2 nm) gold nanoplatelets inside a reactive hydrophobic polymeric matrix

被引：10

作者：

Gonzaga, Ferdinand ^{[1
]}

D'Souza, Renita ^{[1
]}

Brook, Michael A. ^{[1
]}

机构：

[1] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada

来源：

SOFT MATTER | 2011年 / 7卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

SHAPE-CONTROLLED SYNTHESIS; AQUEOUS CHLOROAURATE IONS; SIZE-CONTROLLED SYNTHESIS; HIGH-YIELD SYNTHESIS; ONE-STEP SYNTHESIS; SINGLE-CRYSTALLINE; ALKYLATED POLYETHYLENIMINES; SPONTANEOUS REDUCTION; SILVER NANOPARTICLES; BIOLOGICAL SYNTHESIS;

D O I：

10.1039/c0sm00743a

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：

The synthesis of an amphiphilic polymer based on a polysiloxane backbone with grafted propyloxycitrate moieties is described. Aqueous solutions of this polymer are able to spontaneously reduce gold cations and direct gold metal crystal growth, yielding ultrathin (2 nm) crystalline nanoplatelets that have an exceptionally high aspect ratio: they are in excess of hundreds of nm in width. The growth process is accelerated by light and significantly controlled by pH: at pHs above 7, particles instead of platelets are formed.

引用

页码：722 / 729

页数：8

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