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Detection of Copper Ions Through Recovery of the Fluorescence of DNA-Templated Copper/Silver Nanoclusters in the Presence of Mercaptopropionic Acid

We have developed a simple and homogeneous fluorescence assay, comprised of 3-mercaptopropionic acid (MPA) and DNA-Cu/Ag nanoclusters (NCs) in aqueous solution, for the detection of ... ions. The fluorescence of the DNA-Cu/Ag NCs was quenched by MPA, which was recovered in the presence of ... ions.... Full description

Journal Title: Analytical Chemistry Oct 15, 2010, Vol.82(20), p.8566
Main Author: Su, Yu-Ting
Other Authors: Lan, Guo-Yu , Chen, Wei-Yu , Chang, Huan-Tsung
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 00032700 ; E-ISSN: 15206882
Link: http://search.proquest.com/docview/802196664/?pq-origsite=primo
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title: Detection of Copper Ions Through Recovery of the Fluorescence of DNA-Templated Copper/Silver Nanoclusters in the Presence of Mercaptopropionic Acid
format: Article
creator:
  • Su, Yu-Ting
  • Lan, Guo-Yu
  • Chen, Wei-Yu
  • Chang, Huan-Tsung
subjects:
  • Oxidation
  • Fluorescence
  • Copper
  • Analytical Chemistry
  • Aqueous Solutions
  • Deoxyribonucleic Acid–DNA
  • Chemical Compounds
ispartof: Analytical Chemistry, Oct 15, 2010, Vol.82(20), p.8566
description: We have developed a simple and homogeneous fluorescence assay, comprised of 3-mercaptopropionic acid (MPA) and DNA-Cu/Ag nanoclusters (NCs) in aqueous solution, for the detection of ... ions. The fluorescence of the DNA-Cu/Ag NCs was quenched by MPA, which was recovered in the presence of ... ions. This MPA-induced fluorescence quenching arises through changes in the DNA conformation that occur after interactions between MPA and the Cu/Ag clusters. The MPA-induced fluorescence quenching displayed typical characteristics in Stern - Volmer plots; it followed a static quenching mechanism. The presence of ... ions resulted in the oxidation of MPA to form a disulfide compound, leading to recovery of the fluorescence of the DNA-Cu/Ag NCs. The fluorescence of the DNA-Cu/Ag NCs in the presence of MPA increased upon increasing the concentration of ... ions over the range from 5 to 200 nM. The DNA-Cu/Ag NC probe provided the limit of detection (at a signal-to-noise ratio of 3) for ... ions of 2.7...
language: eng
source:
identifier: ISSN: 00032700 ; E-ISSN: 15206882
fulltext: fulltext
issn:
  • 00032700
  • 0003-2700
  • 15206882
  • 1520-6882
url: Link


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titleDetection of Copper Ions Through Recovery of the Fluorescence of DNA-Templated Copper/Silver Nanoclusters in the Presence of Mercaptopropionic Acid
creatorSu, Yu-Ting ; Lan, Guo-Yu ; Chen, Wei-Yu ; Chang, Huan-Tsung
ispartofAnalytical Chemistry, Oct 15, 2010, Vol.82(20), p.8566
identifierISSN: 00032700 ; E-ISSN: 15206882
subjectOxidation ; Fluorescence ; Copper ; Analytical Chemistry ; Aqueous Solutions ; Deoxyribonucleic Acid–DNA ; Chemical Compounds
descriptionWe have developed a simple and homogeneous fluorescence assay, comprised of 3-mercaptopropionic acid (MPA) and DNA-Cu/Ag nanoclusters (NCs) in aqueous solution, for the detection of ... ions. The fluorescence of the DNA-Cu/Ag NCs was quenched by MPA, which was recovered in the presence of ... ions. This MPA-induced fluorescence quenching arises through changes in the DNA conformation that occur after interactions between MPA and the Cu/Ag clusters. The MPA-induced fluorescence quenching displayed typical characteristics in Stern - Volmer plots; it followed a static quenching mechanism. The presence of ... ions resulted in the oxidation of MPA to form a disulfide compound, leading to recovery of the fluorescence of the DNA-Cu/Ag NCs. The fluorescence of the DNA-Cu/Ag NCs in the presence of MPA increased upon increasing the concentration of ... ions over the range from 5 to 200 nM. The DNA-Cu/Ag NC probe provided the limit of detection (at a signal-to-noise ratio of 3) for ... ions of 2.7...
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titleDetection of Copper Ions Through Recovery of the Fluorescence of DNA-Templated Copper/Silver Nanoclusters in the Presence of Mercaptopropionic Acid
descriptionWe have developed a simple and homogeneous fluorescence assay, comprised of 3-mercaptopropionic acid (MPA) and DNA-Cu/Ag nanoclusters (NCs) in aqueous solution, for the detection of ... ions. The fluorescence of the DNA-Cu/Ag NCs was quenched by MPA, which was recovered in the presence of ... ions. This MPA-induced fluorescence quenching arises through changes in the DNA conformation that occur after interactions between MPA and the Cu/Ag clusters. The MPA-induced fluorescence quenching displayed typical characteristics in Stern - Volmer plots; it followed a static quenching mechanism. The presence of ... ions resulted in the oxidation of MPA to form a disulfide compound, leading to recovery of the fluorescence of the DNA-Cu/Ag NCs. The fluorescence of the DNA-Cu/Ag NCs in the presence of MPA increased upon increasing the concentration of ... ions over the range from 5 to 200 nM. The DNA-Cu/Ag NC probe provided the limit of detection (at a signal-to-noise ratio of 3) for ... ions of 2.7...
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citationpf 8566 vol 82 issue 20
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titleDetection of Copper Ions Through Recovery of the Fluorescence of DNA-Templated Copper/Silver Nanoclusters in the Presence of Mercaptopropionic Acid
authorSu, Yu-Ting ; Lan, Guo-Yu ; Chen, Wei-Yu ; Chang, Huan-Tsung
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6Chemical Compounds
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atitleDetection of Copper Ions Through Recovery of the Fluorescence of DNA-Templated Copper/Silver Nanoclusters in the Presence of Mercaptopropionic Acid
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risdate20101015
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abstractWe have developed a simple and homogeneous fluorescence assay, comprised of 3-mercaptopropionic acid (MPA) and DNA-Cu/Ag nanoclusters (NCs) in aqueous solution, for the detection of ... ions. The fluorescence of the DNA-Cu/Ag NCs was quenched by MPA, which was recovered in the presence of ... ions. This MPA-induced fluorescence quenching arises through changes in the DNA conformation that occur after interactions between MPA and the Cu/Ag clusters. The MPA-induced fluorescence quenching displayed typical characteristics in Stern - Volmer plots; it followed a static quenching mechanism. The presence of ... ions resulted in the oxidation of MPA to form a disulfide compound, leading to recovery of the fluorescence of the DNA-Cu/Ag NCs. The fluorescence of the DNA-Cu/Ag NCs in the presence of MPA increased upon increasing the concentration of ... ions over the range from 5 to 200 nM. The DNA-Cu/Ag NC probe provided the limit of detection (at a signal-to-noise ratio of 3) for ... ions of 2.7...
copWashington
pubAmerican Chemical Society
urlhttp://search.proquest.com/docview/802196664/
pages8566-8572
doi10.1021/ac101659d
date2010-10-15