Tetracyanoethylene oxide-functionalized graphene and graphite characterized by Raman and Auger spectroscopy |
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| Affiliation: | 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;1. State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing 210093, PR China;2. School of Chemistry and Pharmacy of Guangxi Normal University, Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guilin 541004, PR China;1. Laboratório de Bioinorgânica, Universidade Federal do Ceará, Caixa Postal 12200, 60455-760 Fortaleza, Ceará, Brazil;2. Laboratório de Fotoquímica e Conversão de energia, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil;1. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, PR China;2. College of Physics and Electronic Engineering, Qilu Normal University, Jinan 250013, PR China;1. Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, USA;2. Center for Advanced Research and Technology, Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, USA |
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| 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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