Institute of Materials Research and Engineering A*STAR (Agency for Science, Technology and Research) , 3 Research Link Singapore 117602.
Langmuir. 2014 Jan 14;30(1):288-96. doi: 10.1021/la404300r. Epub 2013 Dec 19.
Sequential layer-by-layer (LbL) deposition of polyelectrolytes followed by chemical cross-linking was investigated as a method to fabricate functional amphiphilic surfaces for marine biofouling prevention applications. A novel polyanion, grafted with amphiphilic perfluoroalkyl polyethylene glycol (fPEG) side chains, was synthesized and subsequently used to introduce amphiphilic character to the LbL film. The structure of the polyanion was confirmed by FTIR and NMR. Amphiphilicity of the film assembly was demonstrated by both water and hexadecane static contact angles. XPS studies of the cross-linked and annealed amphiphilic LbL films revealed the increased concentration of fPEG content at the film interface. In antifouling assays, the amphiphilic LbL films effectively prevented the adhesion of the marine bacterium Pseudomonas (NCIMB 2021).
采用层层（LbL）聚电解质沉积，随后进行化学交联，研究了一种制备用于海洋生物附着预防应用的功能两亲表面的方法。合成了一种新型的聚阴离子，接枝有两亲性全氟烷基聚乙二醇（fPEG）侧链，随后用于为 LbL 薄膜引入两亲性。通过傅里叶变换红外光谱（FTIR）和核磁共振（NMR）证实了聚阴离子的结构。通过水和十六烷的静态接触角证明了薄膜组装的两亲性。交联和退火的两亲性 LbL 薄膜的 XPS 研究表明，薄膜界面处的 fPEG 含量增加。在防污实验中，两亲性 LbL 薄膜有效地阻止了海洋细菌 Pseudomonas（NCIMB 2021）的附着。
