Disruption of molecular ordering over several layers near the Au/2,8-difluoro-5,11-bis(triethylsilylethynyl) anthradithiophene interface

Shawn M. Huston, Jiuyang Wang, Terry McAfee, Marsha Loth, John E. Anthony, Harald W. Ade, Brad R. Conrad, Daniel B. Dougherty

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The transition from an electrode-dominated ordered monolayer structure to a bulk-like thin film crystal structure of 2,8-difluoro-5,11-bis(triethylsilylethynyl) anthradithiophene (diF-TES-ADT) is observed to occur over at least the first four molecular layers near the electrode surface. Scanning tunneling microscopy studies of the growth of diF-TES-ADT on Au(111) show that the first two molecular layers assemble with aromatic planes parallel to the substrate surface. The monolayer structures are highly stable and well-ordered, while the bilayer structures are more loosely packed and poorly ordered. Subsequent diF-TES-ADT growth results in a more bulk-like layer containing standing up molecular configurations approaching the (001) crystal face as observed by grazing incidence wide angle X-ray scattering measurements. However, the third and fourth monolayers also show poor long-range ordering and an apparent height modulation that indicate significant strain effects from the substrate still persist.

Original languageEnglish
Pages (from-to)822-828
Number of pages7
JournalCrystal Growth and Design
Volume15
Issue number2
DOIs
StatePublished - Feb 4 2015

Bibliographical note

Publisher Copyright:
© 2014 American Chemical Society.

ASJC Scopus subject areas

  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics

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