21 May 2018 Solution-processable green phosphorescent iridium(III) complexes bearing 3,3,3-triphenylpropionic acid fragment for use in OLEDs
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Abstract
New solution-processable materials based on well-known green iridium(III) heteroleptic complexes (ppy)2Ir(acac) and (ppy)2Ir(pic) were acquired by chemical modification of ppy ligand with functionable hydroxyl groups and subsequent esterification with 3,3,3-triphenylpropionic acid fragment. Photoluminescence quantum efficiencies up to 0.90 were measured for the compounds in solution. Emission characteristics in pure solid films and different guest-host systems with hole transporting materials were investigated. Green light emitting OLEDs (organic light emitting devices) was prepared and characterized.
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Kaspars Traskovskis, Kaspars Traskovskis, Aivars Vembris, Aivars Vembris, Valdis Kokars, Valdis Kokars, "Solution-processable green phosphorescent iridium(III) complexes bearing 3,3,3-triphenylpropionic acid fragment for use in OLEDs", Proc. SPIE 10687, Organic Electronics and Photonics: Fundamentals and Devices, 1068715 (21 May 2018); doi: 10.1117/12.2306806; https://doi.org/10.1117/12.2306806
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