Requirement on Aromatic Precursor for Graphene Formation
| Autor: | Michael Giersig, Christian Lotze, Stephanie Reich, Katharina J. Franke, Kati Gharagozloo-Hubmann, N. S. Müller |
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| Rok vydání: | 2016 |
| Předmět: |
Anthracene
Reaction mechanism Materials science Graphene Inorganic chemistry 02 engineering and technology Chemical vapor deposition Conjugated system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound General Energy chemistry Polymerization Chemical engineering law Terphenyl Molecule Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 120:9821-9825 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.6b01781 |
| Popis: | We studied graphene growth from solid, aromatic precursors at low temperature (∼400 °C) on a metal surface via high vacuum (6 × 10–6 mbar) chemical vapor deposition. A set of conjugated and condensed aromatic precursor molecules, i.e., structural isomers of terphenyl and anthracene are compared. While p-terphenyl and m-terphenyl were found to be excellent precursors for the formation of graphene, no graphene was obtained from o-terphenyl or anthracene. We propose a reaction mechanism that explains the differing growth products. The key requirement for the synthesis of graphene is a three-dimensional nature and suitable molecular structure of the precursor. Its incorporation into a flat aromatic system on a metal surface has to provide sufficient energy gain for the polymerization to occur. |
| Databáze: | OpenAIRE |
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