Electrogenerated Chemiluminescence. Direct Heterogeneous Formation of the Triplet State by Reduction of Rubrene Radical Cation at an N-Type Zinc Oxide Electrode,

摘要

The electrogenerated chemiluminescence (ECL) of rubrene resulting from direct electron transfer from a zinc oxide semiconductor electrode to rubrene radical cation to form the triplet state of rubrene is reported. ECL characteristic of rubrene fluorescence occurs following triplet-triplet annihilation. Emission is observed at electrode potentials insufficient to form the radical anion of rubrene, although the more intense radical ion annihilation ECL is observed when the ZnO is held at more negative potentials. (Author)