Energy Transfer Calculations Based on Fluorescence Spectra of Acriflavine and Rhodamine B Laser Dyes

Abstract

In this work, the fluorescence spectra of a mixture of two laser dyes; acriflavine and rhodamine B in different solvents; ethanol and DMSO, were recorded and studied. The energy transfer efficiency of the prepared samples was determined and studied by comparing some parameters such as the critical transfer distance, the emission lifetime, and the rate constant for energy transfer at different concentrations of these solutions. The emission lifetime of the dye mixture in DMSO was shorter than that in ethanol by 35.6%.