Molecular functionalization of tantalum oxide surface towards development of apatite growth

被引:11
作者
Aubry, D. [1 ]
Volcke, C. [2 ]
Arnould, Ch. [1 ]
Humbert, C. [2 ]
Thiry, P. A. [2 ]
Delhalle, J. [1 ]
Mekhalif, Z. [1 ]
机构
[1] Univ Namur, FUNDP, Lab Chem & Electrochem Surfaces, B-5000 Namur, Belgium
[2] Univ Namur, FUNDP, Res Ctr Phys Matter & Radiat, B-5000 Namur, Belgium
关键词
Biomaterials; Apatite; Tantalum; X-ray photoelectron spectroscopy; Atomic force microscopy; Self-assembled monolayers; SELF-ASSEMBLED MONOLAYERS; ATOMIC-FORCE MICROSCOPY; SIMULATED BODY-FLUID; CALCIUM-PHOSPHATE; NUCLEATION; HYDROXYAPATITE; INTERFACE; MECHANISM;
D O I
10.1016/j.apsusc.2008.11.022
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We have studied the apatite growth dynamics on tantalum oxide surfaces. This nucleation is obtained via an organosilane intermediate layer between the apatite and the substrate surface. Four organosilane layers (differing by their terminal functionality) were investigated. Their characterization with atomic force microscopy and other techniques such as X-ray photoelectron spectroscopy (XPS) and wetting measurements highlighted the influence of the organosilane terminal groups on the apatite growth rates. Results revealed that apatite is indeed growing faster on phosphate terminal groups than on the three other groups studied (vinyl, hydroxyl and carboxyl). (C) 2008 Elsevier B. V. All rights reserved.
引用
收藏
页码:4765 / 4772
页数:8
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