| Literature DB >> 23620134 |
Michiel J J Coenen1, Duncan den Boer, Fieke J van den Bruele, Thomas Habets, Koen A A M Timmers, Minko van der Maas, Tony Khoury, Dwi Panduwinata, Maxwell J Crossley, Jeffrey R Reimers, Willem J P van Enckevort, Bas L M Hendriksen, Johannes A A W Elemans, Sylvia Speller.
Abstract
Self-assembled monolayers of meso-5,10,15,20-tetrakis(undecyl)porphyrin copper(II) on a graphite/1-octanoic acid interface have been studied by Scanning Tunnelling Microscopy. Four distinct polymorphs were observed, varying in their unit cell size. Arrays of unit cells of the various polymorphs seamlessly connect to each other via shared unit cell vectors. The monolayers are not commensurate, but coincident with the underlying graphite substrate. The seamless transition between the polymorphs is proposed to be the result of an adaptation of the molecular conformations in the polymorphs and at the boundaries, which is enabled by the conformational freedom of the alkyl tails of these molecules.Entities:
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Year: 2013 PMID： 23620134 DOI： 10.1039/c3cp50829c
Source DB: PubMed Journal: Phys Chem Chem Phys ISSN： 1463-9076 Impact factor: 3.676