The electron-transfer based interaction between transition metal ions   and photoluminescent graphene quantum dots (GQDs): A platform for metal   ion sensing

doi:10.1016/j.talanta.2013.08.055

CORC > 北京大学 > 化学与分子工程学院

	The electron-transfer based interaction between transition metal ions and photoluminescent graphene quantum dots (GQDs): A platform for metal ion sensing
	Huang, Hongduan ; Liao, Lei ; Xu, Xiao ; Zou, Mingjian ; Liu, Feng ; Li, Na
刊名	talanta
	2013
关键词	Graphene quantum dots Transition metal ions Photoluminescence Quenching CARBON DOTS PHOTOVOLTAIC DEVICES EMERGENT NANOLIGHTS COPPER IONS IN-VIVO OXIDE SENSOR GREEN
DOI	10.1016/j.talanta.2013.08.055
英文摘要	The electron-transfer based quenching effect of commonly encountered transition metal ions on the photoluminescence of grapheme quantum dots (GQDs) was for the first time investigated, and was found to be associated with electron configuration of the individual metal ion. Ethylene diamine tetraacetic acid (EDTA), the metal ion chelator, can competitively interact with metal ions to recover the quenched photoluminescence of GQDs. Basically, metal ions with empty or completely filled d orbits could not quench the photoluminescence of GQDs, but this quenching effect was observed for the metal ions with partly filled d orbits. Based on the quenching-recovering strategy, a simple optical metal sensing platform was established by taking Ni2+ as an example. Using the nickel ion-specific chelating reagent, dimethylglyoxime (DMG), to replace EDTA, a detection limit of 4.1 mu M was obtained in standard solution. This proposed strategy does not need further. functionalization of GQDs, facilitating the application for simple, fast and cost-effective screening of metal ions. (C) 2013 Elsevier B.V. All rights reserved.; Chemistry, Analytical; SCI(E); 0; ARTICLE; 152-157; 117
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150694]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Huang, Hongduan,Liao, Lei,Xu, Xiao,et al. The electron-transfer based interaction between transition metal ions and photoluminescent graphene quantum dots (GQDs): A platform for metal ion sensing[J]. talanta,2013.
APA	Huang, Hongduan,Liao, Lei,Xu, Xiao,Zou, Mingjian,Liu, Feng,&Li, Na.(2013).The electron-transfer based interaction between transition metal ions and photoluminescent graphene quantum dots (GQDs): A platform for metal ion sensing.talanta.
MLA	Huang, Hongduan,et al."The electron-transfer based interaction between transition metal ions and photoluminescent graphene quantum dots (GQDs): A platform for metal ion sensing".talanta (2013).