SPIN-POLARIZED TRANSIENT RADICALS FROM p-BENZOQUINONE AND DI-t-BUTYL-p-QUINONES BY PHOTO-EXCITATION OF BENZOPHENONE IN A MAGNETIC FIELD

Article abstract of DOI:10.1246/cl.1986.589

In the photochemical electron transfer reactions of t-alkylamine and p-benzoquinone in liquid, emissively spin-polarized transient anion radicals from p-benzoquinone (PBQ) and 2,5- or 2,6-di-t-butyl-p-quinone (25Q or 26Q) are exclusively produced by photo-excitation of benzophenone (BP) in a magnetic field.Transient radicals of quinones with different unpaired spin distribution are obtained at the onset of photolysis.