Cyclodextrin-porphyrin supramolecular sensitizer for mercury(II) ion

doi:10.1016/S0003-2670(02)00723-7

CORC > 北京大学 > 化学与分子工程学院

	Cyclodextrin-porphyrin supramolecular sensitizer for mercury(II) ion
	Yang, RH ; Li, K ; Wang, KM ; Liu, F ; Li, N ; Zhao, FL
刊名	analytica chimica acta
	2002
关键词	cyclodextrin porphyrin supramolecular complex mercury ion fluorescence OPTICAL SENSOR BETA-CYCLODEXTRIN ENERGY-TRANSFER MEMBRANE COMPLEX RECOGNITION COPPER(II) EXTRACTION CHEMISTRY WATER
DOI	10.1016/S0003-2670(02)00723-7
英文摘要	A new supramolecular sensitizer for mercury(II) ion based on a cyclodextrin/porphyrin inclusion complex has been proposed. In aqueous base solution, meso-tetraphenylporphyrin (TPP) emits weak fluorescence. In the presence of alkylated beta-cyclodextrin, significant fluorescence enhancement is observed from TPP by forming a cyclodextrin/porphyrin inclusion complex. In addition, the formation of supramolecular complex causes a remarkable increase of the porphyrin metallation rate following the fluorescence quenching of TPP at its maximum emission wavelength. The quenching of TPP fluorescence at room temperature is fast and nearly complete upon Hg(II) interaction. Based on these experimental observations, a simple, fast and low-cost fluorometric method for determination of Hg(H) was developed. With the optimum conditions described, Hg(II) in water from 5.0 x 10(-8) to 2.0 x 10(-5) mol l(-1) can be determined with a limit of detection of 2.0 x 10(-9) mol l(-1). The method was applied in the analysis of water samples with satisfactory results. (C) 2002 Elsevier Science B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000178255500015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Analytical; SCI(E); 24; ARTICLE; 2; 285-293; 469
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/208025]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Yang, RH,Li, K,Wang, KM,et al. Cyclodextrin-porphyrin supramolecular sensitizer for mercury(II) ion[J]. analytica chimica acta,2002.
APA	Yang, RH,Li, K,Wang, KM,Liu, F,Li, N,&Zhao, FL.(2002).Cyclodextrin-porphyrin supramolecular sensitizer for mercury(II) ion.analytica chimica acta.
MLA	Yang, RH,et al."Cyclodextrin-porphyrin supramolecular sensitizer for mercury(II) ion".analytica chimica acta (2002).