The origin of wavelength effects in the fluorescence quenching of aromatic hydrocarbons by chlorinated alkanes has been investigated using fluorescence lifetime and fluorescence steady-state techniques and absorption spectroscopy. Evidence was obtained for the presence of ground-state complexes between the aromatic hydrocarbon and the chlorinated alkane in both polar and nonpolar solvents. The kinetics of the fluorescence quenching are consistent with the hypothesis that these ground-state complexes are responsible for the variations of the quenching efficiency with wavelength.
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Ware et al. (1972) studied this question.
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