Enhanced Bonding of Organometallics to Titanium via a Titanium(III) Phosphate Interface

ARXPS and high energy XPS characterisation of titanium surfaces for medical implants

“…[6] The Ti 0 2p of the BP-A1 was not detected even with Ag Lα and hence the surface film after treatment with phosphoric acid was thicker than 12 nm, as expected. [2] The detected Ti 2p for this sample lies at 459.5 ± 0.2 eV. This binding energy (BE) is too high for the expected Ti(III) phosphate but it is in good agreement with BEs typical for Ti(IV) phosphates.…”

“…[1] However, when a film of aqueous phosphoric acid on air-oxidized titanium is heated, a layer of crystalline titanium (III) dihydrogen orthophosphate Ti(H 2 PO 4 ) 3 forms and appears to be strongly adhered to the surface. [2] A surface of this composition is then suitable for silanisation. Coating with aminopropyl trimethoxysilane (APTMS) (Fig.…”

Immobilization of bovine serum albumin on TiO2 film via chemisorption of H3PO4 interface and effects on platelets adhesion

“…TiO 2 films were cut into 1 cm  1 cm, then thoroughly cleaned by acetone, ethanol and distilled water, and immersed in phosphoric acid solution (8.5%, v/v) for 1 h at 30 8C, another 3 h at 100 8C, and warmed in an oven at 120 8C for 3 h. It is reported warming at 120 8C gives a strong surface binding [9,15]. Samples were then cooled and supersonic rinsed with water to remove any weakly adsorbed material.…”

“…Here the substrate was a thin film, and the intact coverage of TiO 2 film need to be kept. Phosphoric acid was applied because it does not have strong oxidation property compared to H 2 O 2 , and it was reported, when a film of phosphoric acid on TiO 2 is heated, a layer of ''TiP'' is formed which appears to be strongly adhered to the www.elsevier.com/locate/apsusc Available online at www.sciencedirect.com surface, with -OH lying above and below the layer [9]. Secondly, the surface was silanized with APTES, followed by the immobilization of bovine serum albumin in the presence of water-soluble carbodiimide, e.g.…”

Self-assembled Monolayer Films of Phosphonates for Bonding RGD to Titanium

“…This interface reportedly decomposes in air over several days [15,29,42,52]. A novel interface of self-assembled monolayer films of phosphonates (SAMP) is mechanically strong and chemically stable in air, while enabling high surface coverage by organics [19,20]. In particular, SAMP have been used to couple RGD to titanium to promote cell attachment in vitro [18,43].…”