A pH-responsive polyelectrolyte multilayer film with tunable interfacial properties

POLYMER

卷:214

Article

Jiang, Tao¹  Moghaddam, Saeed Zajforoushan¹  Thormann, Esben¹ 

[1] Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark

关键词: Polyelectrolyte multilayer;    Surface modification;    EDC/NHS cross-Linking;    pH-responsive film;   

DOI  :  10.1016/j.polymer.2020.123367

来源: Elsevier

【 摘 要 】

We report a facile and versatile approach to fabricate polyelectrolyte multilayer (PEM) films with a chemically modifiable outer surface. A PEM film was prepared by layer-by-layer assembly of poly (2-aminoethyl methacrylate) (PAMA) and polymethacrylic acid (PMAA), terminated with a partially tert-butyloxycarbonyl (Boc)protected random copolymer (PAMA-co-PBocAMA) as the final layer. The obtained PEM film was then cross linked and the free amino groups in the PEM film were quenched using EDC/NHS chemistry. The outer layer of the film was then treated via a deprotection reaction, affording free amino groups selectively located at the film surface. As a proof of concept study, these functional groups were used to modify the film surface with two model hydrophilic and hydrophobic compounds, which tuned the wettability of the PEM.

【 授权许可】

Free