Journal
PLASMA PROCESSES AND POLYMERS
Volume 12, Issue 4, Pages 336-346Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.201400151
Keywords
amination; nanocrystalline diamond; surface conductivity; surface functionalization; XPS
Funding
- MMT [P108/12/0910, LM2011026, 7AMB14SK024]
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Nanocrystalline diamond (NCD) films may be used in biosensing after modification of their surfaces with active functional groups. Here, surface functionalization of O- and H-NCD films with amine groups was made by 2 plasma-based processes: a) RF plasma treatment in ammonia, b) the deposition of thin amine-containing plasma polymer via RF magnetron sputtering of nylon target in Ar/N-2 mixture. Amination of the NCD films by plasma treatment in NH3 caused an attachment of 1% of primary amines but destroyed the surface conductivity of H-NCD films. The 5% concentration of -NH2 was detected on the NCD covered with the plasma polymer. Moreover, the surface conductivity of H-NCD films reached 10(-7) S.
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