Issue 69, 2014

An STM study of molecular exchange processes in organic thin film growth

Abstract

The growth of a fullerene derivative (PCBM) on top of a layer of a tetrathiafulvalene (TTF) derivative previously deposited on Au(111) has been studied by scanning tunneling microscopy (STM). The results show that the preferential interaction with the gold substrate induces the exchange of PCBM molecules with the exTTF monolayer, expelling exTTF molecules to the outer surface. This exchange process is forbidden when the thickness of the exTTF layer increases above the monolayer, and the larger surface energy of PCBM leads to the growth of 3D islands.

Graphical abstract: An STM study of molecular exchange processes in organic thin film growth

Supplementary files

Article information

Article type
Communication
Submitted
14 Mei 2014
Accepted
05 Jul 2014
First published
07 Jul 2014

Chem. Commun., 2014,50, 9954-9957

Author version available

An STM study of molecular exchange processes in organic thin film growth

J. M. Gallego, D. Ecija, N. Martín, R. Otero and R. Miranda, Chem. Commun., 2014, 50, 9954 DOI: 10.1039/C4CC03656E

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