Issue 30, 2009
From the journal:

Physical Chemistry Chemical Physics

Substrate effect on supramolecular self-assembly: from semiconductors to metals

Takayuki Suzuki,a   Theresa Lutz,a   Dietmar Payer,a   Nian Lin,ab   Steven L. Tait,ac   Giovanni Costantini*ad  and  Klaus Kernae  

* Corresponding authors

a Max Planck Institute for Solid State Research, Heisenbergstrasse 1, Stuttgart, Germany

b Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China

c Department of Chemistry, Indiana University, Bloomington, USA

d Department of Chemistry, University of Warwick, Coventry, United Kingdom
E-mail: g.costantini@warwick.ac.uk

e Institut de Physique de la Matière Condensée, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

Abstract

Terephthalic acid (TPA) deposited on Si(111)-7 × 7, Si(111)-Image ID:b905125b-t1.gif-Ag and Ag(111) has been studied as a model system to understand how much passivated semiconductor surfaces differ from semiconductor and metal surfaces in respect of supramolecular self assembly. By scanning tunneling microscopy it is found that TPA molecules do not form any ordered supramolecular structure on the pristine semiconductor surface, due to a strong molecule–substrate interaction. On the contrary, TPA has a weaker interaction with Si(111)-Image ID:b905125b-t2.gif-Ag, leading to the formation of an ordered supramolecular layer stabilized by carboxyl hydrogen bonds. These structures are very similar to the supramolecular layer of TPA formed on Ag(111), indicating that the two substrates behave similarly for what concerns the adsorption of functional organic molecules. However, the deposition of Fe on the TPA layers on Si(111)-Image ID:b905125b-t3.gif-Ag does not induce the formation of two-dimensional metal–organic frameworks which, on the contrary, readily develop on Ag(111). Possible origins of this difference are discussed.

Graphical abstract: Substrate effect on supramolecular self-assembly: from semiconductors to metals

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Article information

DOI
https://doi.org/10.1039/B905125B
Article type
Paper
Submitted
12 Mar 2009
Accepted
08 May 2009
First published
10 Jun 2009

Phys. Chem. Chem. Phys., 2009,11, 6498-6504

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Substrate effect on supramolecular self-assembly: from semiconductors to metals

T. Suzuki, T. Lutz, D. Payer, N. Lin, S. L. Tait, G. Costantini and K. Kern, Phys. Chem. Chem. Phys., 2009, 11, 6498 DOI: 10.1039/B905125B

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