聚乙烯醇和苯基硼酸衍生化壳聚糖的可控逐层组装
Controllable layer-by-layer assembly of PVA and phenylboronic acid-derivatized chitosan.
作者信息
Zhang Dan, Yu Guanghua, Long Zhu, Yang Guihua, Wang Bin
机构信息
Key Laboratory of Eco-textile, Ministry of Education, Jiangnan University, Wuxi 214122, China; School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, Hebei, China.
Key Laboratory of Eco-textile, Ministry of Education, Jiangnan University, Wuxi 214122, China.
出版信息
Carbohydr Polym. 2016 Apr 20;140:228-32. doi: 10.1016/j.carbpol.2015.12.032. Epub 2015 Dec 17.
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.
通过使用N-羟基琥珀酰亚胺（NHS）和N-（3-二甲基氨基丙基）-N'-乙基碳二亚胺盐酸盐（EDC）作为偶联试剂对，将带有苯硼酸基团的小分子接枝到壳聚糖上，制备了苯硼酸衍生化的壳聚糖（壳聚糖-PBA）。随后，在pH值控制下，在硅片或聚苯乙烯乳胶颗粒等支撑表面上制备了壳聚糖-PBA和聚乙烯醇的自组装多层薄膜。自组装的驱动力是含苯硼酸的聚合物与聚乙烯醇之间的酯形成，这可以通过简单的pH值控制来“关闭”。
Zotero 插件