title: Fluorescent Property of Chitosan Oligomer and Its Application as a Metal Ion Sensor.
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+.
authors.affiliation: Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 34134, Korea. hun1062@naver.com.
authors.forename: Hun Min
authors.initials: HM
authors.lastname: Lee
authors.affiliation: Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 34134, Korea. vvvkmhvvv@nate.com.
authors.forename: Min Hee
authors.initials: MH
authors.lastname: Kim
authors.affiliation: Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, MD 20892, USA. youngil.yoon@nih.gov.
authors.forename: Young Il
authors.initials: YI
authors.lastname: Yoon
authors.affiliation: Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 34134, Korea. parkwh@cnu.ac.kr.
authors.forename: Won Ho
authors.initials: WH
authors.lastname: Park
mesh_terms: D048271:Chitosan / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D004735:Energy Transfer / Q000187:drug effects; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D008279:Magnetic Resonance Imaging / Q000379:methods; D008670:Metals / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D014867:Water / Q000737:chemistry
chemical_list: D005456:Fluorescent Dyes; D008670:Metals; C400945:water soluble chitin; D014867:Water; D003300:Copper; D048271:Chitosan
keywords: chitosan oligomer; fluorescent property; metal ion sensor