Paramagnetic resonance in phosphorescent aromatic hydrocarbons. I: Naphthalene

Abstract

Recently Hutchison and Mangum have observed electron spin resonance in the lowest triplet state of naphthalene. An analysis of their results is given on the basis of spin-spin interaction between the two unpaired electrons. In addition to the lines observed by these authors another transition, which corresponds to Δm = ±2 in the atomic case, must occur at low field strength. This transition has been observed in a mixed crystal as well as in rigid glass solution.