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Indexed by:期刊论文

Date of Publication:2012-08-15

Journal:TALANTA

Included Journals:SCIE、EI、PubMed、Scopus

Volume:97

Page Number:456-461

ISSN No.:0039-9140

Key Words:Chitosan; Fe3+; Detection; Absorbent; Fluorescence imaging

Abstract:A series of fluorescent materials were synthesized by modification of chitosan (CS) with 4-fluoresceincarboxaldehyde (Fluo) and N-methyl-carbazole-3-aldehyde (Cb). Both L-CS-Fluo and L-CS-Cb feature excellent water-solubility and exhibit highly selective fluorescence response to Fe3+ in environment and biological fields. The high-molecular weight chitosan-based materials: H-CS-Fluo and H-CS-Cb take on doubled absorptivity compared to free chitosan due to the introduction of fluorescence probes. These modified-probe chitosan materials could be regenerated by treating with EDTA. Meanwhile, monomer probes AG-Fluo arid AG-Cb linked by D-glucosamine were also synthesized to explore the binding efficiency. (C) 2012 Elsevier BM. All rights reserved.