%0 Book %A Hauser, Andreas %A Von Arx, Marianne E. %A Langford, Vaughan S. %A Kairouani, Sélim %A Oetliker, Ueli %A Pillonnet, Anne %T Photophysical properties of three-dimensional transition metal tris-oxalate network structures %B Topics in Current Chemistry, Transition Metal and Rare Earth Compounds. Excited States, Transitions, and Interactions, Vol III %E (ed. H. Yersin), Springer, Berlin %V 241 %D 2004 %K oxalate networks %K [Cr(ox)3]3- %K [Cr(bpy)3]3+ %K 2E state %K resonant energy transfer %K phonon-assisted energy transfer %K Förster transfer %K Exchange interaction %R 10.1007/b96860 %U http://dx.doi.org/10.1007/b96860 %U http://archive-ouverte.unige.ch/unige:3941 %X Excitation energy transfer processes play an important role in many areas of physics, chemistry and biology. The three-dimensional oxalate networks of composition [MIII(bpy)3][MIMIII(ox)3]ClO4 (bpy=2,2-bipyridine, ox=oxalate, MI=alkali ion) allow for a variety of combinations of different transition metal ions. The combination with chromium(III) on both the tris-bipyridine as well as the tris-oxalate site constitutes a model system in which it is possible to differentiate unambiguously between energy transfer from [Cr(ox)3]3– to [Cr(bpy)3]3+ due to dipole-dipole interaction on the one hand and exchange interaction on the other hand. Furthermore it is possible to just as unambiguously differentiate between the common temperature dependent phonon-assisted energy migration within the 2E state of [Cr(ox)3]3–, and a unique resonant process.