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Nanotubular titanium oxide (TiO₂) produced by self-ordering processes using electrochemical anodization have been extensively explored in recent years as a new biomaterial for implants, drug delivery systems, cell growth, biosensors, immunoisolations, bioartificial organs and tissue engineering. Chemical inertness is the main weakness of this material when placed in contact with biological systems and surface modification is a possible solution of this problem. The aim of this study is to develop a flexible and facile method for surface modification of TiO₂ nanotubes to tailor new interfacial properties important in many biomedical applications. TiO₂ nanotubes were prepared by electrochemical anodization of titanium foil using ethylene glycol: NH₄F electrolyte (2% water and 0.3% NH₄F). Plasma surface modification using allylamine (AA) as a precursor has been applied to generate a thin and chemically reactive …