Porphyrin assembly on beta-cyclodextrin for selective sensing and   detection of a zinc ion based on the dual emission fluorescence ratio

doi:10.1021/ac020467n

CORC > 北京大学 > 化学与分子工程学院

	Porphyrin assembly on beta-cyclodextrin for selective sensing and detection of a zinc ion based on the dual emission fluorescence ratio
	Yang, RH ; Li, KA ; Wang, KM ; Zhao, FL ; Li, N ; Liu, F
刊名	analytical chemistry
	2003
关键词	SUPRAMOLECULAR COMPLEX OPTODE MEMBRANE METAL-COMPLEXES CHARGE-TRANSFER DERIVATIVES SENSOR TETRAPHENYLPORPHYRIN RECOGNITION BINDING PROBES
DOI	10.1021/ac020467n
英文摘要	In the present paper, a new cyclodextrin/porphyrin supramolecular sensitizer for zinc ion has been proposed based on the porphyrin dual fluorescence emission ratio. In aqueous solution, meso-tetraphenylporphyrin shows weak fluorescence, while in the presence of alkylated beta-cyclodextrin, it exhibits significant fluorescence enhancement by forming a cyclodextrin/porphyrin inclusion complex. Furthermore, the formation of a supramolecular complex causes a remarkable increase of the porphyrin metalation rate following the porphyrin fluorescence emission changes at two different emission wavelengths. The fluorescence emission of,tetraphenylporphyrin at 656-nm bands decreases while that at 606 nm increases upon zinc ion interaction. Thus, the inclusion complex can behave as a ratiometric fluorescent sensor. Theoretically derivative equations for fluorescent ratiometry have been proposed for the first time. The feasibility of the proposed method is demonstrated by the performance of fluorometric detection of zinc ion. With the optimum conditions described, zinc ion in aqueous solution can be determined from 5.0 x 10(-7) to 2.5 x 10(-4) M. As the porphyrin electronic absorption and fluorescence emission are located in the visible range, and the fluorescence changes upon zinc ion interaction show high selectivity over biologically relevant cations, the inclusion complex could be used for biomedical application.; Chemistry, Analytical; SCI(E); EI; PubMed; 102; ARTICLE; 3; 612-621; 75
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/200159]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Yang, RH,Li, KA,Wang, KM,et al. Porphyrin assembly on beta-cyclodextrin for selective sensing and detection of a zinc ion based on the dual emission fluorescence ratio[J]. analytical chemistry,2003.
APA	Yang, RH,Li, KA,Wang, KM,Zhao, FL,Li, N,&Liu, F.(2003).Porphyrin assembly on beta-cyclodextrin for selective sensing and detection of a zinc ion based on the dual emission fluorescence ratio.analytical chemistry.
MLA	Yang, RH,et al."Porphyrin assembly on beta-cyclodextrin for selective sensing and detection of a zinc ion based on the dual emission fluorescence ratio".analytical chemistry (2003).