Issue 64, 2014
From the journal:

Chemical Communications

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

Hunter J. Karmel,a   John J. Garramone,a   Jonathan D. Emery,a   Sumit Kewalramani,a   Michael J. Bedzykab  and  Mark C. Hersam*ac  

* Corresponding authors

a Dept. of Materials Science & Engineering, Northwestern Univ., Evanston, IL 60208, USA
E-mail: m-hersam@northwestern.edu

b Dept. of Physics, Northwestern Univ., Evanston, IL 60208, USA

c Dept. of Chemistry, Northwestern Univ., Evanston, IL 60208, USA

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.

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

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Article information

DOI
https://doi.org/10.1039/C4CC02761B
Article type
Communication
Submitted
14 Ebr. 2014
Accepted
10 Mezh. 2014
First published
13 Mezh. 2014

Chem. Commun., 2014,50, 8852-8855

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

H. J. Karmel, J. J. Garramone, J. D. Emery, S. Kewalramani, M. J. Bedzyk and M. C. Hersam, Chem. Commun., 2014, 50, 8852 DOI: 10.1039/C4CC02761B

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