Influence of the primarily excited state on exciplex formation in 1-(N,N-Dimethylamino)-2-phenylethane

Abstract

The emission yields of 1-(N,N-dimethylamino)-2-phenylethane are followed as a function of the excitation energy in solutions in n-hexane, 1,2-dichloroethane, and in ethanol at room temperature. In n-hexane intramolecular exciplex formation is slightly more favoured from the excited amino than the aryl moiety. The conversion from the excited amine to the exciplex is partly quenched by dichloroethane. In ethanolic solutions excited amine does not convert to the lowest aryl π, π ∗, but exciplex formation is observed following excitation of both chromophores.