Functionalization of nanocrystalline diamond films with phthalocyanines

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  • Christo Petkov, Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel , Heinrich-Plett-Str. 40, D-34132 Kassel, Germany., Tyskland
  • Philipp M. Reintanz, Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel , Heinrich-Plett-Str. 40, D-34132 Kassel, Germany., Tyskland
  • Wilhelm Kulisch, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany., Tyskland
  • Anna Katharina Degenhardt, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany., Tyskland
  • Tobias Weidner
  • Joe E. Baio, School of Chemical, Biological, and Environmental Engineering, Oregon State University , Corvallis, Oregon 97331, United States., USA
  • Rolf Merz, Institut für Oberflächen- und Schichtanalytik (IFOS), Kaiserslautern, Germany, Tyskland
  • Michael Kopnarski, Institut für Oberflächen- und Schichtanalytik (IFOS), Kaiserslautern, Germany, Tyskland
  • Ulrich Siemeling, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany., Tyskland
  • Johann Peter Reithmaier, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany., Tyskland
  • Cyril Popov, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany., Tyskland

Phthalocyanine (Pc) derivatives containing different central metal atoms (Mn, Cu, Ti) and different peripheral chains were synthesized and comprehensively characterized. Their interaction with nanocrystalline diamond (NCD) films, as-grown by hot-filament chemical vapor deposition or after their modification with oxygen plasma to exchange the hydrogen termination with oxygen-containing groups, was studied by X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. The elemental composition as determined by XPS showed that the Pc were grafted on both as-grown and O-terminated NCD. Mn, Cu and Ti were detected together with N stemming from the Pc ring and S in case of the Ti-Pc from the peripheral ligands. The results for the elemental surface composition and the detailed study of the N ls, S 2p and O ls core spectra revealed that Ti-Pc grafted better on as-grown NCD but Cu-Pc and Mn-Pc on O-terminated films. Samples of Mn-Pc on as-grown and O-terminated NCD were further investigated by NEXAFS spectroscopy. The results showed ordering of the grafted molecules, laying flat on the H-terminated NCD surface while only the macrocycles were oriented parallel to the O-terminated surface with the peripheral chains perpendicular to it. (C) 2016 Elsevier B.V. All rights reserved.

OriginalsprogEngelsk
TidsskriftApplied Surface Science
Vol/bind379
Sider (fra-til)415-423
Antal sider9
ISSN0169-4332
DOI
StatusUdgivet - 2016
Eksternt udgivetJa

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