ESR Studies of Spin-Spin Dipolar Interaction in Pure and Diluted Phenoxyl Radical Solids

Abstract ESR studies have been carried out on powder samples of pure phenoxyl (2,6-di-t-butyl-4-phenylphenoxyl) and 3% phenoxyl diluted in its diamagnetic corresponding phenol matrix. The dipolar splittings due to the spin pairs in closest approach have been observed for both the pure and 3% phenoxyl.