期刊
CARBOHYDRATE RESEARCH
卷 346, 期 5, 页码 527-533出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2011.01.002
关键词
Alginic acid; Microwave; Genipin; Cross linking; Fluorescence
资金
- CSIR, New Delhi
- Ministry of Earth Sciences, New Delhi [MoES/9-DS/6/2007-PC-IV]
A facile microwave-induced method was developed for synthesizing water-soluble fluorescent derivatives of alginic acid (ALG) with four different diamines, hydrazine (HY), ethylenediamine (EDA), 1,6-hexanediamine (HDA), and 1,4-cyclohexanediamine (CHDA), followed by a cross-linking reaction with a natural cross linker genipin. The ethylenediamine derivative of alginic acid (ALG-EDA) exhibited good fluorescent activity, which upon cross linking was enhanced threefold. The other amide derivatives, for example, ALG-HY. ALG-HDA, and ALG-CHDA, were not fluorescent, but their respective crosslinked products exhibited excellent fluorescent activity. The fluorescence intensity had an inverse correlation with the number of carbon atoms present in the amine, which in turn was a function of degree of substitution (DS). These fluorescent polysaccharide derivatives are of potential utility in the domain of sensor applications. (C) 2011 Elsevier Ltd. All rights reserved.
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