Spectral, lifetime, fluorescence quenching, energy transfer and photodecomposition of N, N′-bis(2,6-dimethyl phenyl)-3,4:9,10-perylentetracarboxylic diimide (DXP)

Abstract

The spectral behavior and fluorescence quantum yield of N,N′-bis(2,6-dimethyl phenyl)-3,4:9,10-perylentetracarboxylic diimide (DXP) have been measured in different solvents. The role of molecular oxygen and KI in deactivation of excited singlet state DXP have been studied and the second-order quenching rate constant have been determined. The excitation energy transfer from 9,10-diphenylanthracene (DPA) to DXP has also been studied and the value of energy transfer rate constant, k ET, and critical transfer distance, R 0, indicate a Förster-type energy transfer mechanism. The photochemical reactivity of DXP in carbon tetrachloride has been studied.