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Study on the fluorescence resonance energy transfer between CdTe QDs and butyl-rhodamine B in the presence of CTMAB and its application on the detection of Hg(II)
Li, Juan1; Mei, Fang1; Li, Wen-You1; He, Xi-Wen1; Zhang, Yu-Kui1,2
KeywordFluorescence Resonance Energy Transfer Cdte Quantum Dots Butyl-rhodamine b Hg(Ii) Detection
Source PublicationSPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
2008-09-01
DOI10.1016/j.saa.2007.09.017
Volume70Issue:4Pages:811-817
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectSpectroscopy
WOS Research AreaSpectroscopy
WOS KeywordAQUEOUS-SOLUTION ; QUANTUM DOTS ; NANOCRYSTALS ; NANOPARTICLES ; PROBE ; ION
AbstractThe thioglycolic acid-functionalized CdTe quantum dots (QDs) were synthesized in aqueous solution using safe and low-cost inorganic salts as precursors. Fluorescence resonance energy transfer (FRET) system was constructed between CdTe QDs (donor) and butyl-rhodamine B (BRB) (acceptor) in the presence of cetyltrimethylammonium bromide (CTMAB). CTMAB micelles formed in water reduced the distance between the donor and the acceptor significantly and thus improved the FRET efficiency, which resulted in an obvious fluorescence enhancement of the acceptor. Several factors which impacted the fluorescence spectra of the FRET system were studied. The energy transfer efficiency (E) and the distance (r) between CdTe and BRB were obtained. The feasibility of the prepared FRET system as fluorescence probe for detecting Hg(II) in aqueous solution was demonstrated. At pH 6.60, a linear relationship could be established between the quenched fluorescence intensity of BRB and the concentration of Hg(II) in the range of 0.0625-2.5 mu mol L(-1). The limit of detection was 20.3 nmol L(-1). The developed method was proved to be sensitive and repeatable to detect Hg(II) in a wide range in aqueous solutions. (C) 2007 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000258363300016
Citation statistics
Cited Times:56[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140891
Collection中国科学院大连化学物理研究所
Affiliation1.Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog Res & Anal Ctr, Dalian 116011, Peoples R China
Recommended Citation
GB/T 7714
Li, Juan,Mei, Fang,Li, Wen-You,et al. Study on the fluorescence resonance energy transfer between CdTe QDs and butyl-rhodamine B in the presence of CTMAB and its application on the detection of Hg(II)[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2008,70(4):811-817.
APA Li, Juan,Mei, Fang,Li, Wen-You,He, Xi-Wen,&Zhang, Yu-Kui.(2008).Study on the fluorescence resonance energy transfer between CdTe QDs and butyl-rhodamine B in the presence of CTMAB and its application on the detection of Hg(II).SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,70(4),811-817.
MLA Li, Juan,et al."Study on the fluorescence resonance energy transfer between CdTe QDs and butyl-rhodamine B in the presence of CTMAB and its application on the detection of Hg(II)".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 70.4(2008):811-817.
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