Linstrom PJ: Mallard WG (Eds): NIST Chemistry WebBook, NIST Standard Reference Database No. 69. National Institute of Standards and Technology: Gaitherburg, MD; 2003. Competing interests The authors declare that they have no competing interests. Authors’ contributions ZT, AU, IH, and SY carried out calculations with the help of HK

and KI and drafted the manuscript. YM participated in the design of the study and helped to draft the manuscript. All authors read and approved the final manuscript.”
“Background Antithrombogenic biomaterial is selleck screening library being extensively studied in order to fabricate artificial organs and biomedical materials in contact with blood. A significant goal for the application of antithrombogenic biomaterial is to prevent NCT-501 chemical structure thrombus formation on material surface. Thrombus formation involves a process with multiple steps, including plasma protein adsorption, platelet adhesion and aggregation, and finally, the activation

of GM6001 cell line clotting factor. The properties of the surface such as hydrophobicity/hydrophilicity, surface charge, and roughness of biomaterials strongly influence platelet adhesion, activation, and thrombus formation when the surface is in contact with blood [1]. The unusual mechanical properties of carbon nanotubes (CNTs) such as high hardness, low coefficient of friction, and high wear and corrosion resistance render them an before ideal class of reinforcement for multiple biomedical applications including tissue engineering, biomedicine, biomaterials, (bio) sensors,

catalysts, and so on [2–12]. However, the hydrophobicity and inertness of CNTs frequently hinder their biomedical application. So, surface modification of CNTs is very important to minimize the adverse interaction and improve the biocompatibility in clinical applications. According to previous works, many results on surface modification of polymers induced by pure individual chemical element ion implantation to control their biocompatibility have been reported [13–22]. Ion implantation is one of the most powerful techniques for the surface modification of solids. It has been applied to the surface modification of polymers in order to control conductive, mechanical, physical, and chemical properties [23–27]. This technique has many advantages in application. In addition to the technological simplicity and cleanliness, it modifies only the surface characteristics without affecting the bulk properties. Therefore, if a biomaterial with the desired bulk properties does not exhibit the appropriate biocompatibility, its surface can be modified by this technique [28]. In this work, multiwalled carbon nanotubes (MWCNTs) prepared by chemical vapor deposition (CVD) were implanted by NH2 ions.