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Guanidinylated chitosan derivatives with different molecular weights have been synthesized by the guanidinylation reaction of chitosan with aminoiminomethanesulfonic acid (AIMSOA); the structures of AIMSOA and guanidinylated chitosan were characterized by UV, FT-IR, fluorescence and 13 C NMR. The absorbance at 230nm, a emission band ranging from 500 to 540nm in emission spectrum were observed...
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