Thermosensitive gold nanoparticles

被引：434

作者：

Zhu, MQ

Wang, LQ

Exarhos, GJ

Li, ADQ ^{[1
]}

机构：

[1] Washington State Univ, Dept Chem, Pullman, WA 99164 USA

[2] Washington State Univ, Mat Res Ctr, Pullman, WA 99164 USA

[3] Pacific NW Natl Lab, Richland, WA 99352 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 09期

关键词：

D O I：

10.1021/ja038544z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thermosensitive gold nanoparticles were fabricated by conjugating Au with a thiol-terminated poly(N-isopropylacrylamide) or PPA; this polymer stabilizer exhibits a temperature transition while undergoing a hydrophilic to hydrophobic transformation. The introduction of PPA onto gold nanoparticles has sensitized Au nanoparticles with unique temperature dependence. At low temperature (25 °C), the solutions containing PPA-functionalized gold nanoparticles are transparent, whereas higher temperatures (30 °C) lead to opaque suspensions. The thermosensitive property of PPA-functionalized Au nanoparticles is reversible, and the clear?opaque suspensions can be repeated many times. Copyright © 2004 American Chemical Society.

引用

页码：2656 / 2657

页数：2

共 33 条

[1] Controlled association of amphiphilic polymers in water:: Thermosensitive nanoparticles formed by self-assembly of hydrophobically modified pullulans and poly(N-isopropylacrylamides) [J].