Synthesis and characterization of cyclometalated iridium(III) complexes containing pyrimidine-based ligands

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28344

Title:	Synthesis and characterization of cyclometalated iridium(III) complexes containing pyrimidine-based ligands
Authors:	Lin,CF;Huang,WS;Chou,HH;Lin,JT
Contributors:	中央大學
Keywords:	LIGHT-EMITTING-DIODES;BENZOIMIDAZOLE-BASED LIGANDS;CROSS-COUPLING REACTIONS;PHOSPHORESCENT OLEDS;ELECTROLUMINESCENT DEVICES;ROOM-TEMPERATURE;ENERGY-TRANSFER;EXCITED-STATES;SOLAR-CELLS;EFFICIENT
Date:	2009
Issue Date:	2010-06-29 19:46:35 (UTC+8)
Publisher:	化學研究所
Abstract:	New pyrimidine derivatives (pyr) have been synthesized using palladium-catalyzed Suzuki coupling reaction. These compounds can undergo cyclometalation with iridium trichloride to form bis-cyclometalated iridium complexes, (pyr)(2)Ir(acac) (acac = acetylacetonate; pyr = cyclometalated pyr). The substituents at the both cyclometalated phenyl ring and pyrimidine ring were found to affect both electrochemical and photophysical properties of the complexes. Computation results on these complexes are consistent with the electrochemical and photophysical data. The complexes are green-emitting with good solution quantum yields at similar to 0.30. Light-emitting devices using these complexes as dopants were fabricated, and the device performance at 100 mA/cm(2) are moderate: 9 (17 481 cd/m(2), 4.8%, 18 cd/A, 5.1 lm/W); 10 (18 704 cd/m(2), 4.9%, 18.9 cd/A, 4.7 lm/W); 13 (20 942 cd/m(2), 5.4%, 21.0 cd/A, 6.1 lm/W). (C) 2009 Elsevier B.V. All rights reserved.
Relation:	JOURNAL OF ORGANOMETALLIC CHEMISTRY
Appears in Collections:	[Graduate Institute of Chemistry] journal & Dissertation

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