Sang Jin Lee, J. S. Lee, K. Hwang
2005
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0
Influential Citations
3
Citations
Journal
Current Applied Physics
Abstract
Abstract The preparation and photophysics of organometallic Ir(III) complexes with 3-phenylpyridazine (H6Clppdz) and its derivative are reported. IrCl 3 · n H 2 O reacts with H6Clppdz, and 3-chloro-6-(3 ′ -methoxyphenyl)-4-methyl-pyridazine (MCOMppdz) to give the corresponding chloride-bridged dimers, (6Clppdz) 2 Ir( μ -Cl) 2 Ir(6Clppdz) 2 and (MCOMppdz) 2 Ir( μ -Cl) 2 Ir(MCOMppdz) 2 in good yields. These chloride-bridged dimers are cleaved with 2-pyrazinecarboxylic acid (Hpyzc), 2-picolinic acid (Hpic), acetylacetone (Hacac), and 2,2,6,6-tetramethyl-3,5-heptanedione (Htmd) to give the corresponding monomer, (6Clppdz) 2 Ir(pyzc), (6Clppdz) 2 Ir(pic), (6Clppdz) 2 Ir(acac), (6Clppdz) 2 Ir(tmd), (MCOMppdz) 2 Ir(acac), and (MCOMppdz) 2 Ir(tmd), respectively. The complexes show bright orange to red luminescence at room temperature and the emission wavelenghts are affected by the ancillary ligands as well as cyclometalating ligands (593–664 nm).