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  • Title: Controllable layer-by-layer assembly of PVA and phenylboronic acid-derivatized chitosan.
    Author: Zhang D, Yu G, Long Z, Yang G, Wang B.
    Journal: Carbohydr Polym; 2016 Apr 20; 140():228-32. PubMed ID: 26876848.
    Abstract:
    Phenylboronic acid-derivatized chitosan (chitosan-PBA) were prepared by grafting small molecules bearing phenylboronic acid groups onto chitosan with N-hydroxysuccinimide (NHS) and N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (EDC) as a coupling reagent pair. Self-assembly multilayer thin films of chitosan-PBA and poly(vinyl alcohol) were subsequently produced under pH control on supporting surfaces, either a silicon wafer or polystyrene latex particles. The driving force of the self-assembly was the ester formation of phenylboronic acid containing polymers with PVA, which can be "turned off" by simple pH control.
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