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金纳米粒子聚集体系的制备及其SERS效应表征
引用本文:李玲,曹晓卫,李欣然,张志学,冯小平. 金纳米粒子聚集体系的制备及其SERS效应表征[J]. 光散射学报, 2013, 25(1): 29-34
作者姓名:李玲  曹晓卫  李欣然  张志学  冯小平
作者单位:上海师范大学化学系,上海,200234
基金项目:国家自然科学基金(20775049,20973114);上海市自然科学基金项目;上海市教委科研创新项目
摘    要:以Na2S作为金纳米粒子的还原制备与聚集剂制备了金纳米粒子聚集体系。在制备过程中通过紫外可见光谱对制备条件进行了优化。TEM表征显示聚集体系中的金纳米粒子均为球形,且聚集状态呈现出较好的均匀性。将这一聚集体系作为SERS基底应用于若干氨基酸分子的SERS光谱表征与分析。初步的研究表明Na2S-金纳米粒子聚集体系可有效地应用于生物分子的SERS光谱表征与分析。

关 键 词:金纳米粒子聚集体  硫化钠  表面增强拉曼光谱  甘氨酸  组氨酸
收稿时间:2011-06-30

Preparation of Gold Nanoparticle Aggregates and Characterization for Their SERS Effect
LI Ling , CAO Xiao-wei , LI Xin-ran , ZHANG Zhi-xue , FENG Xiao-ping. Preparation of Gold Nanoparticle Aggregates and Characterization for Their SERS Effect[J]. Chinese Journal of Light Scattering, 2013, 25(1): 29-34
Authors:LI Ling    CAO Xiao-wei    LI Xin-ran    ZHANG Zhi-xue    FENG Xiao-ping
Affiliation:(Department of Chemistry,Shanghai Normal University,Shanghai 200234,China)
Abstract:This article used Na2S as a chemical reduction and aggregation agent to prepare unique gold nanoparticle aggregates under the room-temperature condition.By ultraviolet-visible spectroscopy,the preparation procedure and technological conditions were optimized for the purpose of preparation of steady aggregates.The transmission electron microscopic images display that the as-prepared gold nanoparticles are spherical and the gold nanoparticles are gathered so effectively that these particles can finally form well-defined aggregates.Furthermore,the as-prepared aggregates were used as the substrates of surface-enhanced Raman scattering(SERS) measurements to characterize several amino acid molecules such as glycine and histidine.Previous investigations show that the as-prepared gold nanoparticle aggregates possess so good SERS activity and this make it useful for SERS analysis of a wide variety of biomolecules.
Keywords:gold nanoparticle aggregates  sodium sulfide  surface-enhanced Raman scattering  glycine  histidine
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