ATR-FTIR, TiCOOchit Spectra.

<p>ATR-FTIR, TiCOOchit Spectra.</p

AFM images acquired in tapping mode of titanium surface, titanium with catechol anchored, titanium with catechol covalently bonded to PAH, and finally with PEM physisorbed (PAH-PSS)₇.

<p>A, A′: TiO₂. B, B′: TiCOOH. C, C′: TiCOOPAH. D, D′: TiCOO(PAH-PSS)₇. For X = A, B, C or D: X = 2D topographic image, X′ = phase.</p

X-Ray Photoelectron Spectroscopy (XPS) modelisation for Titanium with catechol (TiCOOH) in order to extract the atomic % of each element presented in <b>table 1</b>.

<p>X-Ray Photoelectron Spectroscopy (XPS) modelisation for Titanium with catechol (TiCOOH) in order to extract the atomic % of each element presented in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0050326#pone-0050326-t001" target="_blank"><b>table 1</b></a>.</p

Graphic.

<p>Atomic % for the different surfaces.</p

XPS spectra for titanium surface analysis.

<p>(A) initial surface: TiO₂, (B) Titanium with catechol grafted at its surface: TiCOOH, (C) Titanium with catechol bonded to PAH: TiCOOPAH.</p

XPS quantification for (A) TiO₂, (B) TiCOOH, (C) TiCOOPAH (D) in atomic %.

<p>XPS quantification for (A) TiO₂, (B) TiCOOH, (C) TiCOOPAH (D) in atomic %.</p

Grafting of catechol groups onto titanium surface.

<p>(A) Initial Titanium surface exhibits OH groups that will be used to interact chemically with catechol cycle: TiO₂ (B) Catechol is bounded to titanium surface and exhibits the carboxylic group COOH: TiCOOH (C) Poly(allylamine hydrochloride) (PAH) and Chitosan are finally covalently bounded to catechol. The COOH group has been used to react with the polycation and its amine group. The two polycations presented are polyallamine hydrochloride (PAH) and Chitosan, left and right respectively: (Left) TiCOOPAH; (Rigth) TiCOOchit.</p