'Quenching of Excited States of Metal Complexes

Ru(bpy)₃²⁺

excited state quenched by N,N'-Bis(3-sulfonato-1-propyl)-3,3'-dimethyl-(bpy²⁺) zwitterion

Furlong, D.N.; Johansen, O.; Launikonis, A.; Loder, J.W.; Mau, A.W.-H.; Sasse, W.H.F.
Aust. J. Chem. 38: 363-7 (1985)

Ru(bpy)₃²⁺ quenched by N,N'-Bis(3-sulfonato-1-propyl)-3,3'-dimethyl-(bpy²⁺) zwitterion
Solvent : H₂O, pH 9.2

k_q = 1.7 x 10⁸(L mol^–1 s^–1)

Mechanism: oxidative electron transfer

Furlong, D.N.; Johansen, O.; Launikonis, A.; Loder, J.W.; Mau, A.W.-H.; Sasse, W.H.F.
Aust. J. Chem. 38: 363-7 (1985)

Ru(bpy)₃²⁺ quenched by N,N'-Bis(3-sulfonato-1-propyl)-3,3'-dimethyl-(bpy²⁺) zwitterion
Solvent : H₂O, 0.2% w/w colloidal silica, pH 9.2

k_q = 2.4 x 10⁸(L mol^–1 s^–1)

Mechanism: oxidative electron transfer
Comments: S adsorbed