Nanosensors based on responsive polymer brushes and gold nanoparticle enhanced transmission surface plasmon resonance spectroscopy

被引：320

作者：

Tokareva, I ^{[1
]}

Minko, S ^{[1
]}

Fendler, JH ^{[1
]}

Hutter, E ^{[1
]}

机构：

[1] Clarkson Univ, Dept Chem, Potsdam, NY 13699 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 49期

关键词：

D O I：

10.1021/ja044575y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Swelling (and shrinking) of poly(2-vinylpyridine), P2VP, polymer brushes, caused by pH changes, could be readily monitored by transmission surface plasmon resonance, T-SPR, spectroscopy. Gold nanoparticles attached to the P2VP polymer brushes dramatically enhanced the pH-induced shift in the T-SPR absorption spectra. (A 50 nm shift of the absorption maximum of the T-SPR spectrum of the supporting gold nanoislands was observed upon changing the pH from 5.0 to 2.0, corresponding to a swelling of the polymer brushes from 8.1 ± 0.7 to 24.0 ± 2.0 nm. Same shift in the opposite direction was observed upon changing the pH from 2.0 to 5.0.). Copyright © 2004 American Chemical Society.

引用

页码：15950 / 15951

页数：2