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DOI码：10.1021/jp045057c

发表刊物：J. Phys. Chem. B.

摘要：The reaction of gold nanoparticles with a potassium periodate−sodium hydroxide−carbonate system undergoes chemiluminescence with three emission bands at 380−390, 430−450, and 490−500 nm, respectively. It was found that the light intensity increased linearly with the concentration of the gold nanoparticles, and the CL intensity increased dramatically when the citrate ions on the nanoparticle surface were replaced by SCN-. The shape, size, and oxidation state of gold nanoparticles after the chemiluminescent reaction were characterized by UV−visible absorption spectrometry, transmission electron microscopy (TEM), and X-ray photoelectron spectrometry (XPS). Gold nanoparticles are supposed to function as a nanosized platform for the observed chemiluminescent reactions. A chemiluminescent mechanism has been proposed in which the interaction between free CO3•- and O2•- radicals generated by a KIO4−NaOH−Na2CO3 system and gold nanoparticles results in the formation of emissive intermediate gold(I) complexes, carbon dioxide dimers, and singlet oxygen molecular pairs on the surface of the gold nanoparticles. This work is not only of great importance for gaining a better understanding of the unique optical and surface properties and chemical reactivity of nanoparticles but also of great potential for developing new biosensing and immunolabeling technologies.

合写作者：石明娟

第一作者：张志锋

论文类型：期刊论文

通讯作者：崔华

学科门类：理学

文献类型：J

卷号：105

期号：8

页面范围：3099-3103

是否译文：否

发表时间：2005-02-03

收录刊物：SCI

发布期刊链接：https://pubs.acs.org/doi/full/10.1021/jp045057c