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Mar. Drugs 2017, 15(4), 105; doi:10.3390/md15040105

Fluorescent Property of Chitosan Oligomer and Its Application as a Metal Ion Sensor

1
Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 34134, Korea
2
Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, MD 20892, USA
*
Authors to whom correspondence should be addressed.
Academic Editors: David Harding and Hitoshi Sashiwa
Received: 26 December 2016 / Revised: 13 March 2017 / Accepted: 29 March 2017 / Published: 4 April 2017
(This article belongs to the Special Issue Advances in Marine Chitin and Chitosan II, 2017)
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Abstract

An aqueous solution was successfully prepared using a low-molecular-weight chitosan oligomer and FITC, and its structural and fluorescent properties were observed by using 1H NMR, 13C NMR, FT-IR, XRD, UV-Vis, and PL spectrometry. Its application as a metal ion sensor was also evaluated. The fluorescence in the water-soluble chitosan oligomer was a result of the carbamato anion (NHCOO-), and a synthesized FITC-labeled chitosan oligomer exhibited an effective detection effect for copper ion as well as energy transfer by the ion near FITC that caused a fluorescence decrease (quenching). The chitosan oligomer was confirmed to be applicable as a selective and sensitive colorimetric sensor to detect Cu2+. View Full-Text
Keywords: chitosan oligomer; fluorescent property; metal ion sensor chitosan oligomer; fluorescent property; metal ion sensor
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MDPI and ACS Style

Lee, H.M.; Kim, M.H.; Yoon, Y.I.; Park, W.H. Fluorescent Property of Chitosan Oligomer and Its Application as a Metal Ion Sensor. Mar. Drugs 2017, 15, 105.

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