title: Self-assembled monolayers of bisphosphonates: influence of side chain steric hindrance.
abstract: Bisphosphonates form self-assembled monolayers (SAMs) spontaneously on stainless steel, silicon, and titanium oxidized surfaces. We used contact angle measurements, atomic force microscopy, and X-ray reflectivity analysis to study the formation of SAMs on a model surface of ultraflat titanium (rms = 0.2 nm). The results were extended to standard materials (mechanically polished titanium, stainless steel, and silicon) and showed that water-soluble bisphosphonic perfluoropolyether can easily form SAMs, with 100% surface coverage and a layer thickness of less than 3 nm. Hydrophobic (water contact angle >110 degrees on stainless steel or titanium) and lipophobic (methylene iodide contact angle >105 degrees on titanium) properties are discussed in terms of industrial applications.
authors: SURFACTIS Technologies, F-49100 Angers, France.
authors: G
authors: G
authors: Lecollinet
authors: N
authors: N
authors: Delorme
authors: M
authors: M
authors: Edely
authors: A
authors: A
authors: Gibaud
authors: J-F
authors: JF
authors: Bardeau
authors: F
authors: F
authors: Hindré
authors: F
authors: F
authors: Boury
authors: D
authors: D
authors: Portet