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Photophysical and photochemical properties of three-dimensional metal-tris-oxalate network structures

Hazenkamp-von Arx, Marianne Elisabeth
Pellaux, René
Decurtins, Silvio
Published in Molecular Crystals and Liquid Crystals. 1996, vol. 286, no. 22, p. 225
Abstract Chemical variation and combination of metal ions of different valencies in the oxalate backbone as well as in the tris-bpy cation of the three-dimensional network structures of the type [MII2(ox)3][MII(bpy)3] (bpy = 2,2'-bipyridine, ox = C2O42-), [MIMIII(ox)3][MII(bpy)3] and [MIMIII(ox)3][MIII(bpy)3]ClO4 offer unique opportunities for studying a large variety of photophysical processes. Depending upon the relative energies of the excited states of the chromophores, excitation energy transfer either from the tris-bipyridine cation to the oxalate backbone or vice versa is observed, as for instance from [Ru(bpy)3]2+ as photo-sensitiser to [Cr(ox)3]3- as energy acceptor in the combination [NaCr(ox)3][Ru(bpy)3], or from [Cr(ox)3]3- to [Cr(bpy)3]3+ in [NaCr(ox)3][Cr(bpy)3]ClO4. In addition efficient energy migration within the oxalate backbone is observed. Furthermore, depending upon the excited state redox potentials, light-induced electron transfer processes may be envisaged.
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Research group Groupe Hauser
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HAUSER, Andreas et al. Photophysical and photochemical properties of three-dimensional metal-tris-oxalate network structures. In: Molecular Crystals and Liquid Crystals, 1996, vol. 286, n° 22, p. 225. https://archive-ouverte.unige.ch/unige:2972

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Deposited on : 2009-09-21

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