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

Hun Min Lee; Min Hee Kim; Young Il Yoon; Won Ho Park

doi:10.3390/md15040105

Marine Drugs (Apr 2017)

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

Hun Min Lee,
Min Hee Kim,
Young Il Yoon,
Won Ho Park

Affiliations

Hun Min Lee: Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 34134, Korea
Min Hee Kim: Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 34134, Korea
Young Il Yoon: Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, MD 20892, USA
Won Ho Park: Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 34134, Korea

DOI: https://doi.org/10.3390/md15040105
Journal volume & issue: Vol. 15, no. 4
p. 105

Abstract

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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+.

Published in Marine Drugs

ISSN: 1660-3397 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Biology (General)
Website: http://www.mdpi.com/journal/marinedrugs

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