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Reversible Tethering of Polymers Onto Catechol-Based Titanium Platforms

Reversible Tethering of Polymers Onto Catechol-Based Titanium Platforms

William Laure, David Fournier, Patrice Woisel, Joël Lyskawa

Langmuir. 2017 Apr 11;33(14):3434-3443.

PMID: 28291361

Abstract:

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP29036644	Poly(2,2,2-trifluoroethyl acrylate)		29036-64-4	Price

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