Triplet exciton band structure of crystalline phenazine

The structure of the lowest triplet state of crystalline phenazine was studied by optical and magnetic resonance techniques. The exciton band was characterized by a large translationally equivalent splitting (17 ± 1 cm^(−1)) which was determined from the resonance pair spectrum. The spin splittings were obtained using the optical detection of magnetic resonance of phosphorescent phenazine crystals at 1.5 K