Selective Cooperative Self-Assembly between an Organic Semiconductor and Native Adatoms on Cu(110)

Bret Maughan, Percy Zahl, Peter Sutter, Oliver L A Monti Masel

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We investigate molecular adsorption, film growth, and self-assembly for titanyl phthalocyanine (TiOPc) on Cu(110) in ultrahigh vacuum using low-temperature scanning tunneling microscopy (LT-STM). Three unique molecular adsorption configurations are identified, two of which are referred to as "O-down" and one as "O-up", each differing in the molecular registry with the surface. Even though disorder dominates film growth to coverages in excess of 1 monolayer in the native thin film, extended self-assembled 1D configuration-dependent nanoribbons form upon annealing of the film. The STM data reveal that the nanoribbons consist of "O-down" TiOPc and a Cu skeleton, anchoring cooperatively on the Cu(110) terraces. Agent-based simulations show that nanoribbons grow and elongate due to anisotropic adatom attachment rates along the two major surface directions. The study reveals the importance of molecule-adatom interactions for novel approaches toward nanostructuring organic semiconductor/metal interfaces.

Original languageEnglish (US)
Pages (from-to)27416-27425
Number of pages10
JournalJournal of Physical Chemistry C
Volume119
Issue number49
DOIs
StatePublished - Dec 10 2015

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

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