Preparation and characterization of persistent maltose-conjugated triphenylmethyl radicals |
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Authors: | Mesa Juan Antonio Velázquez-Palenzuela Amado Brillas Enric Coll Josep Torres Josep Lluís Juliá Luis |
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Institution: | Departament de Química Biològica i Modelització Molecular, Institut de Química Avan?ada de Catalunya (CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain. |
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Abstract: | The 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. |
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