[Ru(bpy)<sub>2</sub>(dppz-NH<sub>2</sub>)]<sup>2+</sup>Complex (dppz-NH<sub>2</sub>: 7-Amino-dipyrido[3,2-<b><i>a</i></b>: 2<sup>′</sup>,3<sup>′</sup>-<b><i>c</i></b>]phenazine) as a Useful Photosensitizing Unit for the Construction of Photoinduced Energy Transfer Systems
energy-accepting units, and were successfully connected to [Ru(bpy)2(dppz-NH2)]2+ through an amide bond. Electronic spectral and electrochemical studies of the resultant complexes were carried out, and it was shown that effective excited electron or energytransfer took place from the Ru(II) polypyridyl center to these units. In the case of the heterodinuclear Ru(II)/Os(II) complex, emission from the Ru(II) polypyridyl
Synthesis and properties of an efficient and switchable photosensitizing unit, [Ru(4,4′-diphenyl-2,2′-bipyridine)2(7-amino-dipyrido[3,2-a:2′,3′-c]phenazine)]2+, for a photo-induced energy transfer systemElectronic supplementary information (ESI) available: time-resolved emission decay curves of Ru(Ph)-NHCO-Os and Ru-NHCO-Os. See http://www.rsc.org/suppdata/dt/b2/b211225f/
by an amide bond to construct a heterodinuclear Ru(II)/Os(II) photo-induced energy transfer system. This system showed stronger Os(II) centered emission compared to the similar heterodinuclear Ru(II)/Os(II) complexcontaining 2,2′-bipy (bpy) instead of Ph2bpy. Analysis of the photophysical processes of these complexes indicated that the stronger Os(II) emission was ascribed not only to the higher absorptivity