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PEM anchorage on titanium using catechol grafting
Hélène Marie1, Amélie Barrere, Frederic Schoenstein
1Université Paris 13, Sorbonne Paris Cité, BPC, Villetaneuse, France.
Background:
This study deals with the anchorage of polyelectrolyte films onto titanium surfaces via a cathecol-based linker for biomedical applications.
Methodology:
The following study uses a molecule functionalized with a catechol and a carboxylic acid: 3-(3,4-dihydroxyphenyl)propanoic acid. This molecule is anchored to the TiO(2) substrate via the catechol while the carboxylic acid reacts with polymers bearing amine groups. By providing a film anchorage of chemisorption type, it makes possible to deposit polyelectrolytes on the surface of titanium.
Principal Findings:
Infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), contact angle and atomic force microscopy (AFM) measurements show that the different steps of grafting have been successfully performed.
Conclusions:
This method based on catechol anchorage of polyelectrolytes open a window towards large possibilities of clinical applications.
