Abstract
Time-resolved fluorescence detected magnetic resonance (FDMR) was used to examine the geminate ion recombination events of aromatic hydrocarbons in alkane solutions. The FDMR linewidth was found to be dependent on aromatic hydrocarbon concentration. In addition, the recombination kinetics were observed to be dependent on the concentration of aromatic hydrocarbon, viscosity of solvent, temperature and the monitored fluorescence wavelength. The formation of dimer-multimer cations explains the observed data. The dimer-multimer radical cation role in excimer formation is demonstrated.
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