Abstract
Scanning tunneling microscopy studies of the first monolayer of 2,8-difluoro-5,11-(bis)triethylsilylethynyl anthradithiophene on Au(111) reveal two ordered structures with anthradithiophene planes parallel to the substrate. Submolecular resolution STM images demonstrate structures with a close approach of fluorine-sulfur and fluorine-fluorine atoms in the ordered structures. This provides evidence for the importance of noncovalent F-S and F-F in driving 2D self-assembly in the monolayer. Spectroscopic studies indicate a transport gap of 2.4 eV that is insensitive to the local domain structures, as expected for weak intermolecular interactions.
Original language | English |
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Pages (from-to) | 21465-21471 |
Number of pages | 7 |
Journal | Journal of Physical Chemistry C |
Volume | 116 |
Issue number | 40 |
DOIs | |
State | Published - Oct 11 2012 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Energy (all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films