摘要
用苯胺作还原剂还原氯金酸合成了金纳米结构.TEM实验表明,苯胺还原氯金酸能生成苯胺齐聚物或其聚合物包裹的金球形纳米粒子.XPS分析表明,金纳米粒子包覆的聚合物层带正电荷.该纳米粒子能用于电极表面纳米结构组装及氧化还原性的生物大分子的电化学研究,实现了超氧化物歧化酶(SOD)在这种带正电荷的金纳米粒子表面的直接电子转移.
Aniline was served as reductant in this paper for the synthesis of gold nanoparticles with positively charged coatings by one pot reaction. Transmission electron microscopy （TEM） was used to visualize the shell structure around the gold nanoparticle cores. Fluorescence spectroscopy and X-ray photoelectron spectroscopy （XPS） proved that the shell was polyaniline or its aniline oligomer which was positively charged in the emeraldine salt form. The synthesized nanoparticles can be assembled onto gold electrode surface through negatively charged submonolayer of 3-mercapto propanoic acid. Improved performance for direct electron transfer of superoxide dismutase on such assemblies can be achieved.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2006年第8期733-737,共5页
Acta Chimica Sinica
基金
四川理工学院科研基金资助项目.
关键词
金纳米粒子
导电聚合物
苯胺
超氧化物歧化酶
直接电化学
gold nanoparticle
conductive polymer
aniline
superoxide dismutase
direct electrochemistry
