Self-assembled organic monolayers on epitaxial graphene with enhanced structural and thermal stability

Hunter J. Karmel, John J. Garramone, Jonathan D. Emery, Sumit Kewalramani, Michael J. Bedzyk, Mark C. Hersam

Research output: Contribution to journalArticle

11 Citations (Scopus)


Scanning tunnelling microscopy and X-ray reflectivity are used to characterize adlayers of perylenetetracarboxylic diimide (PTCDI) deposited on epitaxial graphene (EG) on SiC(0001). PTCDI adopts a herringbone structural phase on EG/SiC that can accommodate sub-5 nm voids with molecularly defined boundaries and isolated molecular vacancies at room temperature. The PTCDI monolayer remains intact up to substrate temperatures of ∼260 °C, thus demonstrating enhanced thermal stability compared to previously studied perylene derivatives on EG/SiC. This journal is

Original languageEnglish
Pages (from-to)8852-8855
Number of pages4
JournalChemical Communications
Issue number64
Publication statusPublished - Aug 18 2014


ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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