Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 13, Pages 12035-12045Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b00136
Keywords
stimuli-responsive polymer coatings; POEGMA; poly(4-vinylpyridine); copolymer; LCST; wettability; protein adsorption
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The novel polymeric coatings of oligoperoxide-graft-poly(4-vinylpyridine-co-oligo(ethylene glycol)ethyl ether methacrylate246) [oligoperoxide-graft-P (4VP-co-OEGMA246)] attached to glass were successfully fabricated. The composition, thickness, morphology, and wettability of :resulting coatings were analyzed using X-ray photoelectron spectroscopy, ellipsometry, atomic force microscopy, and contact angle measurements, respectively. In addition, adsorption of the bovine serum albumin was examined with fluorescence microscopy. The thermal response of wettability and morphology of the coatings followed by that of protein adsorption revealed two distinct transitions at 10 and 23 degrees C. For the first time, three stage switching was, observed not only for surface wetting but also for morphology and protein adsorption. Moreover, the influence of the pH on thermo-sensitivity of modified surfaces was shown.
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