Energy Transfer in Organic Systems I: Photofluorescence of Terphenyl-toluene Solutions

Abstract

The fluorescence quantum intensities of normal and oxygen-free solutions of para-terphenyl in toluene have been measured as a function of concentration c and of excitation wavelength λ from 2200 Å to 3300 Å. The absorption spectra of toluene and terphenyl have been observed. The energy transfer coefficient f from excited toluene molecules to terphenyl molecules has thus been obtained.