Long-lasting antifouling coating from multi-armed polymer.
Long-lasting antifouling coating from multi-armed polymer.
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DOI:
10.1021/la4014575
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发表时间:
2013-08-13
期刊:
影响因子:
--
通讯作者:
Kohane DS
中科院分区:
文献类型:
--
作者:
Mizrahi B;Khoo X;Chiang HH;Sher KJ;Feldman RG;Lee JJ;Irusta S;Kohane DS
We describe a new antifouling surface coating, based on aggregation of a short amphiphilic four-armed PEG-dopamine polymer into particles, and on surface binding by catechol chemistry. An unbroken and smooth polymeric coating layer with an average thickness of approximately 4 microns was formed on top of titanium oxide surfaces by a single step reaction. Coatings conferred excellent resistance to protein adhesion. Cell attachment was completely prevented for at least eight weeks, although the membranes themselves did not appear to be intrinsically cytotoxic. When linear PEG or four-armed PEG of higher molecular weight were used, the resulting coatings were inferior in thickness and in preventing protein adhesion. This coating method has potential applicability for biomedical devices susceptible to fouling after implantation.
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