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. 2011 Mar 15;27(6):2644-51.
doi: 10.1021/la104724v. Epub 2011 Feb 17.

Controlled templating of porphyrins by a molecular command layer

Duncan den Boer  1 , Thomas Habets, Michiel J J Coenen, Minko van der Maas, Theo P J Peters, Maxwell J Crossley, Tony Khoury, Alan E Rowan, Roeland J M Nolte, Sylvia Speller, Johannes A A W Elemans
Affiliations

Controlled templating of porphyrins by a molecular command layer

Duncan den Boer et al. Langmuir. .

Abstract

The copper porphyrin (5,10,15,20-tetraundecylporphyrinato)copper(II) can be templated in a well-defined arrangement using p-(hexadecyloxycarbonyl)phenylacetylene as a command layer on graphite. The bicomponent system was characterized at the submolecular level at a solid/liquid interface by scanning tunneling microscopy (STM). It is proposed that the layer of copper porphyrins is templated on top of the command layer in a hierarchical fashion, via a combination of intermolecular π-π stacking and van der Waals interactions. A very subtle effect, i.e., a superstructure in the alkyl chain region of the phenylacetylene monolayers, was identified as a decisive factor for the templating process.

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