STM Investigation of Alkylated Thiotriphenylene Monolayers at the Solid–Liquid Interface: Structure and Dynamics

Matteo Palma; Giuseppina Pace; Olivier Roussel; Yves Geerts; Paolo Samorì

doi:10.1071/CH06142

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STM Investigation of Alkylated Thiotriphenylene Monolayers at the Solid–Liquid Interface: Structure and Dynamics

Matteo Palma ^A , Giuseppina Pace ^A , Olivier Roussel ^B , Yves Geerts ^B and Paolo Samorì ^A ^C ^D

+ Author Affiliations

- Author Affiliations

^A ISIS-CNRS 7006, Université Louis Pasteur, 8 allée Gaspand Monge, 67083 Strasbourg, France.

^B Laboratoire de Chimie des Polymères, CP 206/1, Université Libre de Bruxelles, Boulevard du Triomphe, 1050 Bruxelles, Belgium.

^C Istituto per la Sintesi Organica e la Fotoreattività – Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy.

^D Corresponding author. Email: samori@isof.cnr.it

Australian Journal of Chemistry 59(6) 376-380 https://doi.org/10.1071/CH06142
Submitted: 28 April 2006 Accepted: 9 June 2006 Published: 6 July 2006

Abstract

We describe a STM investigation of the structure and dynamics of alkylated thiotriphenylene monolayers at the solid–liquid interface. This discotic system was found to pack into two coexisting structural motifs on the basal plane of graphite. The interpretation of the intra-molecular contrast in the STM images showed a large contribution of electronic levels localized on the sulfur atoms bridging the conjugated core with the aliphatic side-chains. The temporal evolution of domain boundaries in a polycrystalline monolayer, explored by recording series of subsequent STM images, revealed an Ostwald ripening phenomenon, namely coarsening in two-dimensional molecular polycrystals.

Acknowledgments

Financial support from the EU through the Marie Curie EST project SUPER (MEST-CT-2004–008128) and the Regione Emilia-Romagna PRIITT Nanofaber Net-Laboratory are gratefully acknowledged.

References

STM Investigation of Alkylated Thiotriphenylene Monolayers at the Solid–Liquid Interface: Structure and Dynamics

Abstract

Acknowledgments

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