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http://dx.doi.org/10.9713/kcer.2011.49.3.325

Study on Electroluminescence of the Phosphorescent Iridium(III) Complex Prepared by Ultrasonic Wave  

Yu, Hong-Jeong (Department of Chemical and Biological Engineering, Korea University)
Chung, Won-Keun (Department of Chemical and Biological Engineering, Korea University)
Chun, Byung-Hee (Department of Chemical and Biological Engineering, Korea University)
Kim, Sung-Hyun (Department of Chemical and Biological Engineering, Korea University)
Publication Information
Korean Chemical Engineering Research / v.49, no.3, 2011 , pp. 325-329 More about this Journal
Abstract
$Ir(pmb)_{3}$(Iridium(III)Tri(1-phenyl-3-methylbenzimidazolin-2-ylidene-$C,C^{2 ) was synthesized to develop a deep blue-emitting Ir(III) complex. We suggested the ultrasonic reactor to enhance the poor reaction yield of $Ir(pmb)_{3}$. The ultrasonic wave enhanced the reaction yield of $Ir(pmb)_{3}$ because the ultrasound helped non-soluble reactants disperse efficiently and produced free radial during the reaction. The maximum yield of $Ir(pmb)_{3}$ was 42.5%, which was 4 times higher than conventional method. Organic light emitting devices were fabricated with the synthesized mer-$Ir(pmb)_{3}$ which emitted at 405 nm. A range of host materials with large bandgaps (UGH2, mCP and CBP) were tested for developing a deep blue emitting device. In case of the device with mCP as the host material, it emitted deep blue and performed quite well relative to the other host materials tested.
Keywords
Organic Light Emitting Diode; Phosphorescent Material; Iridium(III) Complex; Ultrasonic; Preparation;
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Times Cited By KSCI : 1  (Citation Analysis)
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