Chemically Induced Dynamic Nuclear Polarization in Photoreduction Reactions of 1,4-Benzoquinone in an Acidic Medium

Abstract

Chemically induced dynamic nuclear polarization during photolysis of unsubstituted benzoquinone in an acidic medium was observed upon reduction with tertiary butyl alcohol. It was found that protonated triplet quinone molecules accept an electron from alcohol. Elementary acts of the formation of nuclear polarization by the triplet mechanism were revealed.