Abstract
The effect of temperature, solvent, concentration of solute and quenching by oxygen on the decay time and fluorescence spectrum of naphthalene was investigated. At high solute concentrations (>0·1 M) an anomaly in the emission spectrum is interpreted as being due to transient dimers, whereas at lower solute concentrations (<0·1 M), no evidence has been found to support the assumption of transient dimers. The decay time of naphthalene in paraffin oil when excited by a pulsed beam of electrons is unaccountably longer than that of naphthalene in a less viscous medium.
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