Tetracyanoethylene oxide- functionalized graphene and graphite characterized by Raman and Auger spectroscopy
| Autor: | Sanjiv K. Jha, Gary Chandler, Jill Garcia, Nikolai G. Kalugin, Liliya V. Frolova, Eric A. Shaner, Igor V. Magedov, Mekan Ovezmyradov, Donald Bethke, Aaron Harper, Igor Vasiliev |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Auger electron spectroscopy
Materials science Graphene Inorganic chemistry Oxide General Chemistry Chemical vapor deposition Tetracyanoethylene Photochemistry Article law.invention chemistry.chemical_compound symbols.namesake chemistry law Molecular vibration symbols General Materials Science Graphite Raman spectroscopy |
| Popis: | The tetracyanoethylene oxide (TCNEO) functionalization of chemical vapor deposition grown large area graphene and graphite was performed using reaction of TCNEO with carbon surface in chlorobenzene. The successful functionalization has been confirmed by Raman and Auger spectroscopy, and by numerical modeling of the structure and vibrational modes of TCNEO-functionalized graphene. Raman spectra of TCNEO-functionalized graphene and graphite show several groups of lines corresponding to vibrations of attached carbonyl ylide. Lastly, one of key signatures of TCNEO attachment is the high intensity Raman band at ~1450 cm₋1, which represents the C-C=C in plane vibrations in functionalization-distorted graphene. We find Raman spectra indicate the existence of central (pristine) attachment of TCNEO to graphene surface. |
| Databáze: | OpenAIRE |
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