Cd(5 3P1)-photosensitized luminescence of N,N,N′,N′-tetramethyl-1,3-propanediamine

Abstract

Cd(5 ³P₁)-Photosensitized luminescence of N,N,N′,N′-tetramethyl-1,3-propanediamine has been studied under the conditions of steady-state illumination and pulsed laser excitation. There are two emission bands for the sensitized luminescence, the quantum yields of which were determined as well as the overall quenching rate constant of Cd(5 ³P₁) by the steady-state experiment. The temporal profiles of the two emission bands and that of the resonance fluorescence were measured under pulsed excitation conditions. It is suggested that both the emitters of the two bands are formed directly from Cd(5 ³P₁) and there are collision-induced mixing processes between these two kinds of emitters. The energy and entropy differences between these emitters were estimated.