2024-03-29T02:13:33Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1458572018-01-26T05:30:23Zcom_10261_46com_10261_3col_10261_299
00925njm 22002777a 4500
dc
Seber, Gonca
author
Rudnev, Alexander V.
author
Droghetti, Andrea
author
Rungger, Ivan
author
Veciana, Jaume
author
Mas Torrent, Marta
author
Rovira, Concepció
author
Crivillers, Núria
author
2017-01-26
A novel, persistent, electrochemically active perchlorinated triphenylmethyl (PTM) radical with a diazonium functionality has been covalently attached to highly ordered pyrolytic graphite (HOPG) by electrografting in a single-step process. Electrochemical scanning tunneling microscopy (EC-STM) and Raman spectroscopy measurements revealed that PTM molecules had a higher tendency to covalently react at the HOPG step edges. The cross-section profiles from EC-STM images showed that there was current enhancement at the functionalized areas, which could be explained by redox-mediated electron tunneling through surface-confined redox-active molecules. Cyclic voltammetry clearly demonstrated that the intrinsic properties of the organic radical were preserved upon grafting and DFT calculations also revealed that the magnetic character of the PTM radical was preserved.
Chemistry - a European Journal 23(6): 1415–1421 (2017)
0947-6539
http://hdl.handle.net/10261/145857
10.1002/chem.201604700
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100000781
http://dx.doi.org/10.13039/501100005053
http://dx.doi.org/10.13039/501100002809
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100008737
Diazonium compounds
Electrochemistry
Radicals
Redox chemistry
Surface chemistry
Covalent Modification of Highly Ordered Pyrolytic Graphite withaStable OrganicFree Radical by UsingDiazonium Chemistry