文摘
Using achiral coordinatively unsaturated metal complex building-blocks, the two step synthesis of a bimetallic complexcontaining independent [RuIIdppz] units tethered together by a linking 4,4'dipyridyl-1,5-pentane ligand is reported.Photophysical studies on this prototype system indicate that the characteristic luminescence of the [RuIIdppz] moietiesis perturbed by self-quenching processes. Preliminary binding studies on the complex with natural and syntheticduplex DNA is reported. Luminescence and calorimetric titrations reveal that the complex does not show enhancedbinding affinity with respect to analogous monometallic complexes. This result is interpreted by a consideration ofthe length and rigidity of the linker employed in the complex.