The oxidative quenching by a diazonium salt of the excited state of a pyrrole-substituted Ru(bpy)(3)(2+) complex in acetonitrile leads to its polymerization, forming a soluble metallopolymer. The same phenomena is observed with dioxygen as the quencher. The data are consistent with the initial oxidation of the pyrrole moieties by Ru-III species formed upon electron-transfer quenching of [Ru(bpy)(3)](2+*) by O-2. This process appears competitive with pyrrole oxygenation by singlet oxygen formed by energy transfer, due to the subsequent fast polymerization reaction.
Deronzier, A., Jardon, P., Martre, A., Moutet, J.c., Santato, C., Balzani, V., et al. (1998). Photoredox pathways for the polymerization of a pyrrole-substituted ruthenium tris(bipyridyl) complex. NEW JOURNAL OF CHEMISTRY, 22(1), 33-37 [10.1039/a706749f].
Photoredox pathways for the polymerization of a pyrrole-substituted ruthenium tris(bipyridyl) complex
Balzani, V;Credi, A;Paolucci, F;Roffia, S
1998
Abstract
The oxidative quenching by a diazonium salt of the excited state of a pyrrole-substituted Ru(bpy)(3)(2+) complex in acetonitrile leads to its polymerization, forming a soluble metallopolymer. The same phenomena is observed with dioxygen as the quencher. The data are consistent with the initial oxidation of the pyrrole moieties by Ru-III species formed upon electron-transfer quenching of [Ru(bpy)(3)](2+*) by O-2. This process appears competitive with pyrrole oxygenation by singlet oxygen formed by energy transfer, due to the subsequent fast polymerization reaction.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
