A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS

CdTe quantum dots (QDs) were synthesized in aqueous medium by employing L-cysteine as a stabilizer. They exhibited high stability and moderate fluorescence quantum yield (12.5%), and were characterized by UV-vis absorption, fluorescence spectra, Fourier transform infrared spectrometry. Based upon th...

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Autores principales:	WANG,YILIN, LU,JIANPING, TONG,ZHANGFA, HUANG,HAIFENG
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2009
Materias:	CdTe Quantum dots Fluorescence quenching Copper ions
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300015
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spelling	oai:scielo:S0717-970720090003000152010-03-17A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTSWANG,YILINLU,JIANPINGTONG,ZHANGFAHUANG,HAIFENG CdTe Quantum dots Fluorescence quenching Copper ions CdTe quantum dots (QDs) were synthesized in aqueous medium by employing L-cysteine as a stabilizer. They exhibited high stability and moderate fluorescence quantum yield (12.5%), and were characterized by UV-vis absorption, fluorescence spectra, Fourier transform infrared spectrometry. Based upon the fact that the fluorescence of the QDs could be quenched by Cu2+, a simple and rapid method for Cu2+ detection was proposed using L-cysteine-capped CdTe QDs as fluorescent probes. Under optimum conditions, the response showed linear proportion to the concentration of Cu2+ between 20 to 300µg·L-1. The detection limit was 9.3µg·L-1. This method was successfully applied to the determination of trace copper in real samples.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.54 n.3 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300015en10.4067/S0717-97072009000300015
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	CdTe Quantum dots Fluorescence quenching Copper ions
spellingShingle	CdTe Quantum dots Fluorescence quenching Copper ions WANG,YILIN LU,JIANPING TONG,ZHANGFA HUANG,HAIFENG A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS
description	CdTe quantum dots (QDs) were synthesized in aqueous medium by employing L-cysteine as a stabilizer. They exhibited high stability and moderate fluorescence quantum yield (12.5%), and were characterized by UV-vis absorption, fluorescence spectra, Fourier transform infrared spectrometry. Based upon the fact that the fluorescence of the QDs could be quenched by Cu2+, a simple and rapid method for Cu2+ detection was proposed using L-cysteine-capped CdTe QDs as fluorescent probes. Under optimum conditions, the response showed linear proportion to the concentration of Cu2+ between 20 to 300µg·L-1. The detection limit was 9.3µg·L-1. This method was successfully applied to the determination of trace copper in real samples.
author	WANG,YILIN LU,JIANPING TONG,ZHANGFA HUANG,HAIFENG
author_facet	WANG,YILIN LU,JIANPING TONG,ZHANGFA HUANG,HAIFENG
author_sort	WANG,YILIN
title	A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS
title_short	A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS
title_full	A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS
title_fullStr	A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS
title_full_unstemmed	A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS
title_sort	fluorescence quenching method for determination of copper ions with cdte quantum dots
publisher	Sociedad Chilena de Química
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000300015
work_keys_str_mv	AT wangyilin afluorescencequenchingmethodfordeterminationofcopperionswithcdtequantumdots AT lujianping afluorescencequenchingmethodfordeterminationofcopperionswithcdtequantumdots AT tongzhangfa afluorescencequenchingmethodfordeterminationofcopperionswithcdtequantumdots AT huanghaifeng afluorescencequenchingmethodfordeterminationofcopperionswithcdtequantumdots AT wangyilin fluorescencequenchingmethodfordeterminationofcopperionswithcdtequantumdots AT lujianping fluorescencequenchingmethodfordeterminationofcopperionswithcdtequantumdots AT tongzhangfa fluorescencequenchingmethodfordeterminationofcopperionswithcdtequantumdots AT huanghaifeng fluorescencequenchingmethodfordeterminationofcopperionswithcdtequantumdots
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A FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF COPPER IONS WITH CDTE QUANTUM DOTS

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