Thermosensitive gold nanoparticles

被引：435
|
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
收藏
页码：2656 / 2657
页数：2
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