jo202356u_si_001.pdf (1.11 MB)
Preparation and Characterization of Persistent Maltose-Conjugated Triphenylmethyl Radicals
journal contribution
posted on 2016-02-22, 08:09 authored by Juan Antonio Mesa, Amado Velázquez-Palenzuela, Enric Brillas, Josep Coll, Josep Lluís Torres, Luis JuliáThe condensation reaction of d-maltose to free
radicals
of the series of tris(2,4,6-trichlorophenyl)methyl (TTM) and tris(perchlorophenyl)methyl
(PTM) has been described for the first time. The new persistent radicals 1 and 2 are very stable and have been characterized
by EPR. Their cyclic voltammograms show a quasi-reversible process
in the cathode, being reduced to the corresponding anions, with redox
potentials a little lower than those of TTM and PTM, respectively.
Their oxidant activity is in close relation with their reduction potentials.
Therefore, while 2 is reduced by ascorbic acid, 1 remains unaltered.