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Article Dans Une Revue Langmuir Année : 2017

Reversible Tethering of Polymers onto Catechol-Based Titanium Platforms

Résumé

In this article, we report on the reversible tethering of end-functionalized polymers onto catechol-based titanium platforms by exploiting the reversible Diels–Alder (DA) cycloaddition reaction. For this purpose, furan and maleimide end-functionalized polymers, prepared via reversible addition–fragmentation chain transfer polymerization, were covalently grafted through a DA reaction onto reactive titanium platforms elaborated from catechol-based anchors incorporating either the furan or the maleimide moiety. As a proof of concept, a hydrophilic poly(oligo(ethylene glycol)acrylate) (POEGA) and a hydrophobic poly(2,2,2-trifluoroethyl acrylate) (PTFEA) were grafted onto titanium surfaces and subsequently detached by exploiting the thermoreversible nature of the DA reaction [i.e., retro Diels–Alder (rDA)]. These polymers were interchanged by performing a second DA reaction, thereby allowing the titanium surface wettability to be switched from hydrophobic to hydrophilic on demand. The grafting of furan/maleimide end-functionalized polymers onto functionalized (maleimide/furan, respectively) catechol-based titanium platforms and the subsequent rDA/DA sequence used for switching the titanium surface were evidenced by attenuated total reflectance–Fourier transform-infrared spectroscopy, X-ray photoelectron spectroscopy, and contact angle measurements.
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Dates et versions

hal-04642871 , version 1 (10-07-2024)

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William Laure, David Fournier, Patrice Woisel, Joel Lyskawa. Reversible Tethering of Polymers onto Catechol-Based Titanium Platforms. Langmuir, 2017, Langmuir, 33, pp.3434-3443. ⟨10.1021/acs.langmuir.7b00160⟩. ⟨hal-04642871⟩
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