A Segregation and Deprotection Approach for Hydrophilic Surfaces Using Amphiphilic Block Copolymers Possessing Polystyrene and Poly[(tri(ethylene glycol) methacrylate)] Segments
A Segregation and Deprotection Approach for Hydrophilic Surfaces Using Amphiphilic Block Copolymers Possessing Polystyrene and Poly[(tri(ethylene glycol) methacrylate)] Segments
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DOI：
10.1002/macp.201700048
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发表时间：
2017-06
影响因子：
2.5
通讯作者：
Akiko Seki;Takashi Ishizone;A. Oyane;Hideaki Yokoyama
中科院分区：
文献类型：
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作者：
Akiko Seki;Takashi Ishizone;A. Oyane;Hideaki Yokoyama
本文通过聚苯乙烯嵌段聚[(三乙二醇)叔丁基二甲基甲硅烷基醚甲基丙烯酸酯](PS-b-PSi3MA)在聚苯乙烯(PS)基质中的自发表面偏析，然后在PS/水界面将PSi3MA脱保护为POH3MA，制备了由聚[(三(乙二醇)甲基丙烯酸酯)](POH3MA)组成的自发形成的亲水性聚合物刷。当受到保护时，叔丁基封端的亲水性 PSi3MA 嵌段在高温下在空气或真空表面分离。表面隔离结构可以通过冷却至室温，然后脱去 PSi3MA 基团的保护来固定，以提供由未保护的 POH3MA 完全覆盖的表面，并在玻璃状坚固的 PS 上带有 OH 基团。这种亲水性 POH3MA 刷可防止人血清白蛋白的吸附，预计可用于防污表面。
This paper fabricates spontaneously formed hydrophilic polymer brushes composed of poly[(tri(ethylene glycol) methacrylate)] (POH3MA) through spontaneous surface segregation of polystyrene-block-poly[(tri(ethylene glycol) tert-butyldimethylsilyl ether methacrylate)] (PS-b-PSi3MA) in a polystyrene (PS) matrix followed by deprotection of PSi3MA to POH3MA at the PS/water interface. When protected, the tert-butyl-terminated hydrophilic PSi3MA blocks segregate at the air or vacuum surface at elevated temperatures. The surface-segregated structures can be fixed by cooling to room temperature followed by deprotection of the PSi3MA groups to provide surfaces fully covered by unprotected POH3MA, with OH groups on glassy robust PS. Such hydrophilic POH3MA brushes prevent the adsorption of human serum albumin and are expected to be useful in antifouling surfaces.