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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
关键词Fluorescence Resonance Energy Transfer Cdte Quantum Dots Butyl-rhodamine b Hg(Ii) Detection
刊名SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
2008-09-01
DOI10.1016/j.saa.2007.09.017
70期:4页:811-817
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology
类目[WOS]Spectroscopy
研究领域[WOS]Spectroscopy
关键词[WOS]AQUEOUS-SOLUTION ; QUANTUM DOTS ; NANOCRYSTALS ; NANOPARTICLES ; PROBE ; ION
英文摘要The 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.
语种英语
WOS记录号WOS:000258363300016
引用统计
被引频次:52[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140891
专题中国科学院大连化学物理研究所
作者单位1.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
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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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