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- W2064747607 abstract "Shapable electro-conductive (SEC) polymer films (polyanion-doped polypyrrole films) show several interesting properties for bioelectrochemical applications. The SEC film can be used as an inert, stable and hydrophobic electrode in aqueous solution over a wide potential range. In this study, the physical and the potential-assisted adsorption of various proteins on the SEC film is described. Because of the hydrophobic surface characteristic proteins easily adsorb and retain on the film surface by strong hydrophobic interactions. The amount of the adsorbed protein varies from 2.2 to 4.8 μg cm−2 depending on the protein when the film is incubated for 22 h in the protein solution. The adsorption is effectively accelerated and enhanced by applying a positive potential in the range from 0.4 V to 1.0 V (vs. Ag/AgCl). The potential-assisted adsorption process is completed by 10–15 min and the amount of the adsorbed protein is nearly doubled as compared to the adsorption without potential. The adsorbed protein is chemically very stable in comparison with the protein in solution. More than 85% of the initial adsorbed proteins retains on the surface after three weeks of incubation in buffer solution. The initial adsorption rate is studied by quartz crystal micro-balance measurements on a thin polymer film coated quartz crystal. In addition, the SEC film surface is etched with air plasma which leads to a four-fold increase of the adsorption of proteins." @default.
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- W2064747607 date "1997-05-01" @default.
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- W2064747607 title "Adsorption of proteins on electro-conductive polymer films" @default.
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- W2064747607 doi "https://doi.org/10.1016/s0040-6090(96)09518-1" @default.
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