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

10 Citations (Scopus)

Abstract

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
Volume50
Issue number64
DOIs
Publication statusPublished - Aug 18 2014

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Graphene
Monolayers
Thermodynamic stability
Perylene
Scanning tunneling microscopy
Vacancies
Derivatives
X rays
Temperature
Substrates
perylenetetracarboxylic diimide

ASJC Scopus subject areas

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

Cite this

Self-assembled organic monolayers on epitaxial graphene with enhanced structural and thermal stability. / Karmel, Hunter J.; Garramone, John J.; Emery, Jonathan D.; Kewalramani, Sumit; Bedzyk, Michael J.; Hersam, Mark C.

In: Chemical Communications, Vol. 50, No. 64, 18.08.2014, p. 8852-8855.

Research output: Contribution to journalArticle

Karmel, Hunter J. ; Garramone, John J. ; Emery, Jonathan D. ; Kewalramani, Sumit ; Bedzyk, Michael J. ; Hersam, Mark C. / Self-assembled organic monolayers on epitaxial graphene with enhanced structural and thermal stability. In: Chemical Communications. 2014 ; Vol. 50, No. 64. pp. 8852-8855.
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