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Formation of Nitrogen Functional Groups on Plasma Treated DLC

AuthorsLópez-Santos, Carmen ; Yubero, Francisco ; Cotrino, José ; Contreras, Leopoldo; Barranco, Ángel ; González-Elipe, Agustín R.
Contact angle goniometry (CAG)
MW plasmas
Nitrogen plasmas
Surface derivatization
Issue Date13-Aug-2009
CitationPlasma Processes and Polymers 6(9): 555-565 (2009)
AbstractDiamond like carbon (DLC) thin films have been exposed to different nitrogen containing plasmas. A dielectric barrier discharge (DBD) at atmospheric pressure and a microwave discharge (MW) at low pressure using N2 and mixtures Ar + NH3 have been compared. Optical Emission and X-ray Photoelectron spectroscopies, Atomic Force Microscopy and contact angle measurements have been used for this study. A DBD with Ar + NH3 is the most efficient method for DLC functionalization. Films treated with this plasma presented the highest concentration of amine groups as determined by derivatization with 4-chlorobenzaldehyde. All the treated samples underwent a significant aging with time. The efficiency of the different plasmas for DLC functionalization is discussed in the light of the intermediate species detected in the plasma.
Description11 páginas, 7 figuras, 3 tablas.
Publisher version (URL)http://dx.doi.org/10.1002/ppap.200900019
Appears in Collections:(ICMS) Artículos
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