Adsorption and aggregation of gold nanoparticles onto poly(4-vinylpyridine) film revealed by Raman spectroscopy

被引：7

作者：

Ryoo, Hyunwoo ^{[2
]}

Kim, Kwan ^{[2
]}

Shin, Kuan Soo ^{[1
]}

机构：

[1] Soongsil Univ, Dept Chem, Seoul 156743, South Korea

[2] Seoul Natl Univ, Dept Chem, Seoul 151742, South Korea

来源：

VIBRATIONAL SPECTROSCOPY | 2010年 / 53卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Poly(4-vinylpyridine); Gold nanoparticles; Adsorption; Surface-enhanced Raman scattering; SURFACE-ENHANCED RAMAN; AU NANOPARTICLES; SCATTERING; SUSPENSIONS; RESONANCE; ARRAYS; SILVER; SERS;

D O I：

10.1016/j.vibspec.2010.01.020

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The adsorption and aggregation processes of Au nanoparticles on a poly(4-vinylpyridine) (P4VP) polymer surface has been investigated by means of atomic force microscopy (AFM) and Raman scattering spectroscopy. According to the AFM images, the number of Au nanoparticles adsorbed on a P4VP film increased almost linearly with time up to 6 h of immersion time. On the other hand, the P4VP film was too thin to observe its normal Raman spectrum, but the Raman peaks of P4VP could be detected upon the adsorption of Au nanoparticles onto the film, definitely due to the surface-enhanced Raman scattering (SERS) effect associated with the localized surface plasmon of Au nanoparticles. Thereby. Au nanoparticles present in wet conditions on the P4VP film were shown to aggregate when the solvent was evaporated. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：158 / 162

页数：5

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