Mechanism of electron ejection induced by mono- and biphotonic excitation of Cu(CN) 2 − –halide ion systems

This contribution reviews recent studies devoted to understanding the mechanism of electron ejection in aqueous solutions of dicyanocuprate(I) in the presence of halide ions of high concentration using steady state and time resolved luminescence and absorption techniques. It has been demonstrated that electrons originate from two excited states: the lower energy level achieved by one-photon absorption, and the high energy state populated by biphotonic excitation.