Photoinduced Electron Transfer in a Tris(2,2′-bipyridine)-C60-ruthenium(II) Dyad: Evidence of Charge Recombination to a Fullerene Excited State

Abstract

A novel fulleropyrrolidine covalently linked to a tris(2,2′-bipyridine)ruthenium(II) complex is presented (see picture). While electrochemical investigations suggest the absence of any ground-state interaction between ruthenium and fullerene chromophores, photoinduced optical absorption studies clearly show that electron transfer occurs to afford the Ru3+−C60 pair with characteristic fullerene radical anion band at λmax = 1040 nm.