Spectroscopic studies on napththalene in the vapor phase. III. Phosphorescence and intersystem crossing yields of single vibronic levels

Abstract

Gas‐phase phosphorescence spectra of naphthalene‐h₈ and ‐d₈ are reported. A triplet lifetime of 4.2 msec was derived from the 0⁰₀ band of the n‐h₈ phosphorescence. Intersystem crossing yields of single vibronic levels in S₁ were determined from excitation spectra of biacetyl phosphorescence.