Direct observation of spin-injection in tyrosinate-functionalized single-wall carbon nanotubes
| Autor: | Maurizio Prato, Petra Rudolf, Theodoros Tsoufis, Andreas Mavrandonakis, George E. Froudakis, Konstantinos C. Christoforidis, Asem Ampoumogli, Enrico Maccallini, Lubos Jankovic, Yiannis Deligiannakis, Dimitrios Gournis, Aurelio Mateo-Alonso, Vasilios Georgakilas |
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| Přispěvatelé: | Theodoros, Tsoufi, Asem, Ampoumogli, Dimitrios, Gourni, Vasilios, Georgakila, Lubos, Jankovic, Konstantinos C., Christoforidi, Yiannis, Deligiannaki, Andreas, Mavrandonaki, George E., Froudaki, Enrico, Maccallini, Petra, Rudolf, Aurelio Mateo, Alonso, Prato, Maurizio, Zernike Institute for Advanced Materials |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
DECOMPOSITION
Thermogravimetric analysis spin injection functionalized carbon naotubes spin injection Selective chemistry of single-walled nanotubes Carbon nanotube Photochemistry Quantitative Biology::Cell Behavior law.invention Condensed Matter::Materials Science Delocalized electron symbols.namesake PHOTOSYSTEM-II law CHEMISTRY General Materials Science Physics::Chemical Physics Electron paramagnetic resonance Quantitative Biology::Biomolecules PURIFICATION Chemistry CATALYSIS General Chemistry RESONANCE Resonance (chemistry) Quantitative Biology::Genomics EVOLUTION functionalized carbon naotubes TYROSYL RADICALS Covalent bond symbols EPR POLYMERS Raman spectroscopy |
| Zdroj: | Carbon, 67, 424-433. PERGAMON-ELSEVIER SCIENCE LTD |
| ISSN: | 0008-6223 |
| Popis: | In this work, we report on the interaction of a tyrosinate radical with single wall carbon nanotubes (CNT). The tyrosinate radical was formed from tyrosine (ester) by Fenton's reagent and, reacted in situ with carbon nanotubes resulting in novel tyrosinated carbon nanotube derivatives. The covalent attachment of tyrosine on the external surface of the CNTs resulted in the appearance of a free radical, localized in the graphitic surface. The 'electron injection' (delocalization) of the free radical from the tyrosine ring onto the carbon nanotubes was studied and characterized by a combination of electron paramagnetic resonance, Raman and X-ray photoelectron spectroscopies, thermogravimetric analysis, as well as transmission electron and atomic force microscopies. The experiments, complemented by computer simulations, give insight into the formation process and structural details of the produced hybrid structures. (C) 2013 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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