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Carbon N Y. 2015 Jan 1;81:216-222.

Tetracyanoethylene oxide- functionalized graphene and graphite characterized by Raman and Auger spectroscopy.

Author information

1
Department of Chemistry, New Mexico Tech, Socorro, NM 87801, USA.
2
Department of Physics, New Mexico State University, Las Cruces, NM 88003, USA.
3
Department of Materials Engineering, New Mexico Tech, Socorro, NM 87801, USA.
4
Center for Integrated Nanotechnologies and Sandia National Laboratories, Albuquerque, NM 87185, USA.
5
Department of Chemistry, New Mexico Tech, Socorro, NM 87801, USA ; Department of Materials Engineering, New Mexico Tech, Socorro, NM 87801, USA.

Abstract

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. 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. Raman spectra indicate the existence of central (pristine) attachment of TCNEO to graphene surface.

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