Electrogenerated chemiluminescence from violanthrone.
Violanthrone, an emitter of exceptionally bright chemiluminescence, was examined in dimethylformamide solution to determine whether it also emits particularly bright electrogenerated chemiluminescence (ECL). The ECL measurements were carried out using a cycled potential which was applied to platinum electrodes. At the maximum sweep rate of 80 V s-1 available, the intensity of the violanthrone ECL was still increasing with sweep rate and was c. 56% of that from rubrene, a bright, commonly used emitter of ECL. Furthermore, assuming that the emission arises from radical anion-cation recombination, the sweep rate dependence showed that the least stable radical ion (probably the cation) decays with a half-life shorter than 0.2 s.
Quickenden
T I
TI
Department of Chemistry, University of Western Australia, Nedlands.
Hansongnern
K
K
D001580:Benzopyrenes / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D004563:Electrochemistry; D008163:Luminescent Measurements; D009279:Naphthacenes / Q000737:chemistry; D010777:Photochemistry
D001580:Benzopyrenes; D004396:Coloring Agents; D009279:Naphthacenes; C095681:violanthrone; C045049:rubrene