Scanning Tunneling Microscopy and Spectroscopy Studies of Porphyrins at Solid–Liquid Interfaces

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Published 27 March 2006 • Copyright (c) 2006 The Japan Society of Applied Physics
, , Citation Bas Hulsken et al 2006 Jpn. J. Appl. Phys. 45 1953 DOI 10.1143/JJAP.45.1953

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Author affiliations

1 Institute for Molecules and Materials, Radboud University Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands

2 School of Chemistry, The University of Sydney, NSW 2006, Australia

Dates

  1. Received 4 July 2005
  2. Accepted 19 August 2005
  3. Published

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1347-4065/45/3S/1953

Abstract

Monolayers of two tetrakis(meso-undecyl)porphyrins adsorbed at the interface of a liquid and highly oriented pyrolytic graphite (HOPG) and Au(111) surfaces have been investigated with scanning tunneling microscopy (STM). Both molecules form stable monolayers on these surfaces, and topographic images have been obtained down to the submolecular level. For the first time, scanning tunneling spectroscopy (STS) has been used to reveal the electronic properties of this type of molecules at a solid–liquid interface.

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10.1143/JJAP.45.1953