Low temperature fluorescence lifetime of aromatic solutes in 3-methylpentane: investigation using Čerenkov radiation

Abstract

The fluorescence lifetime-temperature dependences for naphthalene and pyrene in 3-methylpentane were investigated in the temperature range 92 - 298 K using Čerenkov light as the source of photochemical excitation. The results are explained in terms of temperature-dependent intersystem crossing from S₁ to the adjacent triplet levels.