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Rhee, Hyun-Woo
Biomimetic Chemistry Lab
Research Interests
  • Site-Specific Protein Labeling in Living Cells
  • Artificial Cofactors for Biomimetic Catalyst
  • Spatiotemporal Proteome mapping of living cells

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An artificial tongue fluorescent sensor array for identification and quantitation of various heavy metal ions

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Title
An artificial tongue fluorescent sensor array for identification and quantitation of various heavy metal ions
Author
Xu, WangRen, ChangliangTeoh, Chai LeanPeng, JuanjuanGadre, Shubhankar HaribhauRhee, Hyun-WooLee, Chi-Lik KenChang, Young-Tae
Issue Date
2014-09
Publisher
AMER CHEMICAL SOC
Citation
ANALYTICAL CHEMISTRY, v.86, no.17, pp.8763 - 8769
Abstract
Herein, a small-molecule fluorescent sensor array for rapid identification of seven heavy metal ions was designed and synthesized, with its sensing mechanism mimicking that of a tongue. The photoinduced electron transfer and intramolecular charge transfer mechanism result in combinatorial interactions between sensor array and heavy metal ions, which lead to diversified fluorescence wavelength shifts and emission intensity changes. Upon principle component analysis (PCA), this result renders clear identification of each heavy metal ion on a 3D spatial dispersion graph. Further exploration provides a concentration-dependent pattern, allowing both qualitative and quantitative measurements of heavy metal ions. On the basis of this information, a "safe-zone" concept was proposed, which provides rapid exclusion of versatile hazardous species from clean water samples based on toxicity characteristic leaching procedure standards. This type of small-molecule fluorescent sensor array could open a new avenue for multiple heavy metal ion detection and simplified water quality analysis.
URI
https://scholarworks.unist.ac.kr/handle/201301/6405
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84906861515
DOI
10.1021/ac501953z
ISSN
0003-2700
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