Chemical modification of graphene via hyperthermal molecular reaction
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| Autores: | , , , , , , |
|---|---|
| Formato: | artículo original |
| Fecha de Publicación: | 2014 |
| Descripción: | Chemical functionalization of graphene is achieved by hyperthermal reaction with azopyridine molecular ions. The one-step, room temperature process takes place in high vacuum (10–7 mbar) using an electrospray ion beam deposition (ES-IBD) setup. For ion surface collisions exceeding a threshold kinetic energy of 165 eV, molecular cation beams of 4,4′-azobis(pyridine) covalently attach to chemical vapor deposited (CVD) graphene. A covalent functionalization degree of 3% of the carbon atoms of graphene is reached after 3–5 h of ion exposure of 2 × 1014 azopyridinium/cm2 of which 50% bind covalently. This facile approach for the controlled modification of graphene extends the scope of candidate species that would not otherwise react via existing conventional methods. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/86056 |
| Acceso en línea: | https://pubs.acs.org/doi/abs/10.1021/ja5046499 https://hdl.handle.net/10669/86056 |
| Palabra clave: | Chemical Hyperthermal Molecular reaction |