Colorimetric Iodide Recognition and Sensing by Citrate-Stabilized Core/Shell Cu@Au Nanoparticles

	Colorimetric Iodide Recognition and Sensing by Citrate-Stabilized Core/Shell Cu@Au Nanoparticles
	Zhang J ; Xu XW ; Yang C ; Yang F ; Yang XR
刊名	analytical chemistry
	2011
卷号	83 期号:10 页码:3911-3917
关键词	GOLD-NANOPARTICLE SELECTIVE FLUORESCENT LASER IRRADIATION AQUEOUS-SOLUTION FLUORIDE IONS ANION CHEMOSENSOR NANORODS SHAPE SIZE
ISSN号	0003-2700
通讯作者	yang xr
中文摘要	in the light of the significance and urgency for the recognition and sensing of anions specifically, especially those of biological relevance, herein, we wish to demonstrate a novel colorimetric avenue for highly selective iodide recognition and sensing using simple citrate-stabilized core/shell cu@au nanoparticles. no other ions than iodide can induce an appreciable color change of the cu@au nanoparticles solution from purple to red by transforming the interconnected, irregularly shaped nanoparticles to the single, separated, and nearly spherical ones, as confirmed by the transmission electron microscopy (tem). on the basis of the optical spectra and tem studies, a mechanism of iodide-induced aggregating/fusion, fragmentation, and reorganization of atoms is proposed. with this strategy, 6 mu m (0.76 ppm) of iodide can be recognized within 20 min by naked-eye observation. this sensitive and selective colorimetric assay opens up a fresh insight of facile, rapid, and reliable detection of iodide and may find its future application in the analysis of the total iodine in edible salt as well as the clinical diagnosis of urinary iodide.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000290466000040
公开日期	2012-06-11
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44633]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhang J,Xu XW,Yang C,et al. Colorimetric Iodide Recognition and Sensing by Citrate-Stabilized Core/Shell Cu@Au Nanoparticles[J]. analytical chemistry,2011,83(10):3911-3917.
APA	Zhang J,Xu XW,Yang C,Yang F,&Yang XR.(2011).Colorimetric Iodide Recognition and Sensing by Citrate-Stabilized Core/Shell Cu@Au Nanoparticles.analytical chemistry,83(10),3911-3917.
MLA	Zhang J,et al."Colorimetric Iodide Recognition and Sensing by Citrate-Stabilized Core/Shell Cu@Au Nanoparticles".analytical chemistry 83.10(2011):3911-3917.