Singlet Excitation Energy Harvesting and Triplet Emission in the Self-Assembled System Poly{1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2,7-diyl}copolymer/tris(bipyridyl)ruthenium(II) in Aqueous Solution

Tris(bipyridyl)ruthenium(II) self-assembles with the oppositely charged conjugated-polyelectrolyte poly{1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2, 7-diyl} in aqueous solution in the presence of the nonionic surfactant C12E5. Rapid energy transfer is observed from the singlet state of the polyelectrolyte to the metal complex, leading to emission from the triplet state of the ruthenium complex.