ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Optical characterisation of organosilane-modified nanocrystalline diamond films

Halyna Kozak, Zdenek Remes, Alexander Kromka, and Martin Ledinsky

Institute of Physics ASCR, Cukrovarnicka 10, 16253 Prague 6, Czech Republic

E-mail: kozak@fzu.cz

Abstract: We report on an optical characterisation of nanocrystalline diamond films photochemically functionalised with the organosilane-coupling agent, N ¹-(3-(trimethoxysilyl)propyl)hexane-1,6-diamine (alternative names: N-(6-aminohexyl)aminopropyl-trimethoxysilane, (3-(6-aminohexylamino)propyl) trimetoxysilane, AHAPS). The presence and homogeneity of the organosilane layers were detected by fluorescence microscopy and infrared reflectance-absorbance spectroscopy. The results indicated that a homogeneous surface coverage with organosilane layers was achieved on diamond surfaces which were modified either by hydrogen or by oxygen plasma treatment. The functionalised nanocrystalline diamonds present a promising solution in future biosensor applications.

Keywords: nanocrystalline diamond – organosilane – AHAPS – fluorescence microscope – IRRAS – FTIR

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-010-0095-6

Chemical Papers 65 (1) 36–41 (2011)