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Ordered growth of vanadyl phthalocyanine (VOPc) on an iron phthalocyanine (FePc) monolayer

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Title: Ordered growth of vanadyl phthalocyanine (VOPc) on an iron phthalocyanine (FePc) monolayer
Author(s): Rochford, LA
Ramadan, AJ
Woodruff, DP
Heutz, S
Jones, TS
Item Type: Journal Article
Abstract: The growth and characterisation of a non-planar phthalocyanine (vanadyl phthalocyanine, VOPc) on a complete monolayer (ML) of a planar phthalocyanine (Iron(II) phthalocyanine, FePc) on an Au(111) surface, has been investigated using ultra-high vacuum (UHV) scanning tunnelling microscopy (STM) and low energy electron diffraction (LEED). The surface mesh of the initial FePc monolayer has been determined and shown to correspond to an incommensurate overlayer, not commensurate as previously reported. Ordered islands of VOPc, with (1 × 1) epitaxy, grow on the FePc layer at submonolayer coverages. The individual VOPc molecules occupy sites directly atop the underlying FePc molecules, indicating that significant intermolecular bonding must occur. It is proposed that this interaction implies that the V[double bond, length as m-dash]O points down into the surface, allowing a Fe–O bond to form. The detailed appearance of the STM images of the VOPc molecules is consistent with previous studies in other VOPc growth studies in which this molecular orientation has been proposed.
Publication Date: 12-Oct-2015
Date of Acceptance: 12-Oct-2015
URI: http://hdl.handle.net/10044/1/40294
DOI: http://dx.doi.org/10.1039/c5cp03724g
ISSN: 1463-9084
Publisher: Royal Society of Chemistry
Start Page: 29747
End Page: 29752
Journal / Book Title: Physical Chemistry Chemical Physics
Volume: 17
Issue: 44
Copyright Statement: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Keywords: Science & Technology
Physical Sciences
Chemistry, Physical
Physics, Atomic, Molecular & Chemical
Chemistry
Physics
SCANNING-TUNNELING-MICROSCOPY
SOLAR-CELLS
THIN-FILMS
ADSORPTION
INTERFACE
EFFICIENT
GRAPHITE
CRYSTALS
AU(111)
SURFACE
Chemical Physics
02 Physical Sciences
03 Chemical Sciences
Publication Status: Published
Appears in Collections:Faculty of Engineering
Materials
Faculty of Natural Sciences



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