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arXiv · 0805.3281

Room temperature electronic template effect of pre-structured SmSi(111)-8x2 interface yielding self-aligned organic molecules

Younes Makoudi·Eric Duverger·Madjid Arab·Frederic Cherioux·Franscisco Ample·Gwenael Rapenne·Xavier Bouju·Frank Palmino
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Abstract

This work describes an innovative concept for the development of organized molecular systems thanks to the template effect of the pre-structured semi-conductive SmSi(111) interface. This substrate was selected because Sm deposition in the submonolayer range leads to a 8x2-reconstruction, which is a well-defined one-dimensional semi-metallic structure. Adsorption of aromatic molecules (1,4-di-(9-ethynyltriptycenyl)-benzene) on SmSi(111)-8x2 and Si(111)-7x7 interfaces has been investigated by scanning tunneling microscopy (STM) at room temperature. Density functional theory (DFT) and semi-empirical (ASED+) calculations have been performed to define the nature of the molecular adsorption sites of the target molecule on SmSi as well as their self-alignment on this interface. Experimental data and theoretical results are in good agreement.

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Younes Makoudi, Eric Duverger, Madjid Arab, Frederic Cherioux, Franscisco Ample, Gwenael Rapenne, Xavier Bouju, Frank Palmino. 2008-05-21. Room temperature electronic template effect of pre-structured SmSi(111)-8x2 interface yielding self-aligned organic molecules. https://arxiv.org/abs/0805.3281

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