Abstract
The ruthenium dyad 3 was synthesized in 8.5% overall yield using standard metal-catalyzed cross-coupling techniques; as opposed to the conventional analogue in which the Ru(bpy)3 moieties are connected through the imide nitrogen, the two Ru(bpy)3 arms of 3 are linked through its naphthalene core. The rate of photoinduced intramolecular electron transfer from ruthenium to the naphthalenebisimide (NBI) core of 3 was found to be 1000-fold faster than that for the conventional analogue due to the increased electronic coupling afforded by the naphthyl bridge.
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