Assembly and Degradation of Low-Fouling Click-Functionalized Poly(ethylene glycol)-Based Multilayer Films and Capsules
作者:Melissa K. M. Leung、Georgina K. Such、Angus P. R. Johnston、Dhee P. Biswas、Zhiyuan Zhu、Yan Yan、Jean-François Lutz、Frank Caruso
DOI:10.1002/smll.201002258
日期:2011.4.18
Nano‐/micrometer‐scaled films and capsules made of low‐fouling materials such as poly(ethylene glycol) (PEG) are of interest for drug delivery and tissue engineering applications. Herein, the assembly and degradation of low‐fouling, alkyne‐functionalized PEG (PEGAlk) multilayer films and capsules, which are prepared by combining layer‐by‐layer (LbL) assembly and click chemistry, are reported. A nonlinear
由低污染材料(例如聚(乙二醇)(PEG))制成的纳米/微米级薄膜和胶囊对于药物输送和组织工程应用很感兴趣。本文报道了通过结合逐层(LbL)组装和点击化学制备的低污染,炔烃功能化PEG(PEG Alk)多层膜和胶囊的组装和降解。的非线性,温度响应PEG ALK在pH 5中合成的,然后用来形成氢键的多层与聚(甲基丙烯酸)(PMA)PEG的热响应行为ALK通过调整组件利用以裁缝膜堆积情况。使用炔-叠氮化click点击化学,PEG Alk/ PMA多层膜通过含有二硫键的双叠氮化物接头交联,使这些薄膜和胶囊具有氧化还原反应能力。在pH 7下,通过破坏聚合物之间的氢键,获得了PEG Alk LbL薄膜和基于PEG Alk的胶囊。这些膜在模拟的细胞内还原条件下显示出特定的解构性质,但在生理pH值下保持稳定,表明在控制药物释放方面有潜在的应用。PEG膜的低污垢特性可通过与人血清和血凝块一起孵育来确认。另外,这些胶囊对人细胞的毒性可忽略不计。