Electrogenerated Chemiluminescence from Phosphorescent Molecules Used in Organic Light-Emitting Diodes
- 1 January 2002
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 149 (5) , E137-E142
- https://doi.org/10.1149/1.1464137
Abstract
The role of triplet states in the electrogenerated chemiluminescence (ECL) of organic light-emitting diode (OLED) materials was investigated. The spectroscopic, electrochemical, and electrochemiluminescent properties of two phosphorescent materials, platinum(II) octaethylporphyrin (PtOEP) and tris(2-phenylpyridine)iridium(II) [Ir(ppy)3][Ir(ppy)3] are described. Radical cations and anions of PtOEP were generated in solution and recombined to produce ECL. The ECL from PtOEP was less than a 9,10-diphenylanthracene (DPA) standard. Ir(ppy)3Ir(ppy)3 could be electro-oxidized and reduced in acetonitrile to produced ECL that was brighter than DPA. The light from both of these compounds was stable, and their emission spectra were the same as those reported for OLEDs based on these compounds. © 2002 The Electrochemical Society. All rights reserved.Keywords
This publication has 56 references indexed in Scilit:
- Transient analysis of organic electrophosphorescence: I. Transient analysis of triplet energy transferPhysical Review B, 2000
- Significant improvement of device durability in organic light-emitting diodes by doping both hole transport and emitter layers with rubrene moleculesApplied Physics Letters, 1999
- Free Energy Control of Reaction Pathways in Electrogenerated ChemiluminescenceJournal of the American Chemical Society, 1997
- Effects of Solvent and Ionic Strength on the Electrochemiluminescence of 9,10-DiphenylanthraceneThe Journal of Physical Chemistry, 1994
- High-frequency generation of electrochemiluminescence at microelectrodesAnalytical Chemistry, 1993
- A new synthetic route to the preparation of a series of strong photoreducing agents: fac-tris-ortho-metalated complexes of iridium(III) with substituted 2-phenylpyridinesInorganic Chemistry, 1991
- Electrogenerated chemiluminescence. 35. Temperature dependence of the ECL efficiency of tris(2,2'-bipyridine)rubidium(2+) in acetonitrile and evidence for very high excited state yields from electron transfer reactionsThe Journal of Physical Chemistry, 1979
- The one-electron oxidation of magnesium octaethylporphinJournal of the American Chemical Society, 1968
- Polarographic Reduction of Porphyrins and Electron Spin Resonance of Porphyrin Anions1Journal of the American Chemical Society, 1966
- Successive One-Electron Reduction Potentials of Porphins and Metal Prophins in DimethylformamideJournal of the American Chemical Society, 1965