Self-assembly of π-conjugated discs on heterogeneous surfaces: Effect of the micro- and nano-scale dewetting

Vincenzo Palermo, Matteo Palma, Zeljko Tomovic, Mark D. Watson, Klaus Müllen, Paolo Samori

Research output: Contribution to journalConference articlepeer-review

12 Scopus citations


We report on the self-assembly from solutions of a large synthetic polycyclic aromatic hydrocarbon (PAH) on a mica surface partially coated by macroscopic gold electrodes. Isotropie structures, continuous monolayers and interconnected networks have been obtained by varying the deposition conditions, including the type of solvent as well as the temperature of the solution and of the substrate. The growth of these organic-inorganic interfaces is governed by the interplay between intermolecular and interfacial interactions. In this frame, the rate of the solvent evaporation plays an important role as the structural arrangement of the PAH ad-layer on the sub-micrometer scale is controlled by the dewetting process. The presence of the gold electrodes influences the film morphology on mica at distances of tens of micrometers from the electrode border, due to the different wettability of gold and mica surfaces.

Original languageEnglish
Pages (from-to)117-121
Number of pages5
JournalSynthetic Metals
Issue number1-3
StatePublished - Dec 7 2004
EventSupramolecular Approaches to Organic Electronics and Nanotechn. - Strasbourg, France
Duration: May 24 2004May 28 2004

Bibliographical note

Funding Information:
Financial support from ESF-SONS-BIONICS is gratefully acknowledged. We thank Dr. Fabio Cicoira for the contact angle measurements.


  • Gold electrodes
  • Organic-inorganic interface
  • Polycyclic aromatic hydrocarbon

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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