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Features of metal atom 2p excitations and electronic structure of 3d-metal phthalocyanines studied by X-ray absorption and resonant photoemission

In English

Författare

  • K. A. Simonov
  • A. S. Vinogradov
  • M. M. Brzhezinskaya
  • Alexei Preobrajenski
  • A. V. Generalov
  • A. Yu Klyushin

Summary, in English

The metal atom 2p core excitations in 3d-metal phthalocyanines (MPc's, M = Ni, Co, Fe) have been studied via a combination of near edge X-ray absorption fine structure (NEXAFS) and resonant photoemission (ResPE) spectroscopy. On the basis of comparison of the corresponding spectra of NiPc, CoPc and FePc it has been shown that the presence of a partly filled molecular orbital (MO) dramatically affects the formation and decay processes of the M 2p core excitation in CoPc and, to a greater extend, in FePc due to the significant 3d-3d exchange interaction. It has been found that the low-lying unoccupied electronic states of NiPc, CoPc and FePc are strongly localized within the MN4 quasi-molecule and have nearly pure 3d character. Moreover, mainly 3d metallic character of the high-lying occupied MOs of NiPc, CoPc and FePc has been proved. (C) 2012 Elsevier B. V. All rights reserved.

Publiceringsår

2013

Språk

Engelska

Sidor

132-135

Publikation/Tidskrift/Serie

Applied Surface Science

Volym

267

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Natural Sciences
  • Physical Sciences

Nyckelord

  • Phthalocyanine
  • NEXAFS
  • Resonant photoemission
  • Exchange interaction

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1873-5584