Rh(4,7-Ph2phen)33+ excited state quenched by Diphenylamine

Rh(4,7-Ph₂phen)₃³⁺ quenched by Diphenylamine
Solvent : Acetonitrile/H₂O

k_q = 9.7 x 10⁹(L mol^–1 s^–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, absorption, single shot signal
Lifetime in the absence of quencher, air free = 73 micro sec.
Electron transfer fraction of quenching = 0.38