Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Synthesis and Electrochemical Study of the Ir(III) Complexes Containing the Diphenyl-quinoline, -Quinoxaline and Pyrazolonate Ligands

  • Lee, Hyun-Shin (Department of Information Display Engineering, Hongik University) ;
  • Ha, Yun-Kyoung (Department of Information Display Engineering, Hongik University)
  • Received : 2010.09.03
  • Accepted : 2010.12.06
  • Published : 2011.03.20
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Abstract

$Ir(dpq/dpqx)_2$(przl-R) complexes were prepared and their electrochemical properties were investigated, where dpq, dpqx and przl-R represent 2,3-diphenylquinoline, 2,3-diphenylquinoxaline and N-phenyl-R-pyrazolonate derivatives, respectively. The iridium complexes containing dpq and dpqx as main ligands were reported to show red phosphorescence, and involvement of a pyrazolonate ancillary ligand in the iridium complexes led to high luminous efficiency for organic light-emitting diodes. In this study, we synthesized red phosphorescent iridium complexes containing a new pyrazolonate ancillary ligand and investigated the HOMOs, LUMOs and resulting electrochemical gaps of $Ir(dpq/dpqx)_2$(przl-R) by cyclic voltammetry. The emission wavelengths of the complexes at 600 - 640 nm were consistent with the gaps of 1.95 - 2.03 eV measured from reduction and oxidation potentials of the complexes.

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References

  1. Censo, D. D.; Fantacci, S.; Angelis, F. D.; Klein, C.; Evans, N.;Kalyanasundaram, K.; Bolink, H. J.; Gratzel, M.; Nazeeruddin,M. K. Inorg. Chem. 2008, 47, 980. https://doi.org/10.1021/ic701814h
  2. Li, J.; Djurovich, P. I.; Alleyne, B. D.; Yousufuddin,M.; Ho, N.N.; Thomas, J. C.; Peters, J. C.; Bau, R.; Thompson,M. E. Inorg.Chem. 2005, 44, 1713. https://doi.org/10.1021/ic048599h
  3. Baldo, M. A.; Thompson,M. E.; Forrest, S. R. Nature 2000, 403,750.S. https://doi.org/10.1038/35001541
  4. Lamansky, S.; Djurovich, P.; Murphy, D.; Abdel-Razzaq, F.;Lee, H. E.; Adachi, C.; Burrow, P. E.; Forrest, S. R.; Thompson,M. E. J. Am. Chem. Soc. 2001, 123, 4304. https://doi.org/10.1021/ja003693s
  5. Lowry, M. S.; Bernhard, S. Chem. Eur. J. 2006, 12, 7970. https://doi.org/10.1002/chem.200600618
  6. Shi,M.; Li, F.; Yi, T.; Zhang, D.; Hu, H.; Huang, C. Inorg. Chem.2005, 44, 8929. https://doi.org/10.1021/ic050844p
  7. ZhaO, Q.; Jiang, C. Y.; Shi, M.; Li, F. Y.; Yi, T.; Cao, Y.; Huang,C. H. Organometallics 2006, 259, 3631.
  8. Lee, H.; Seo, J.; Choi,M. K.; Kim, Y.; Ha, Y. Journal of Physicsand Chemistry of Solids 2008, 69, 3697.
  9. Riesgo, E. C.; Jin, X.; Thummel, R. P. J. Org. Chem. 1966, 61,3017.
  10. Nonoyama, M. J. Organomet. Chem. 1975, 86, 263. https://doi.org/10.1016/S0022-328X(00)89620-5
  11. Lee, H. S.; Ahn, S. Y.; Huh, H. S.; Ha, Y. J. Organomet. Chem.2009, 694, 3325. https://doi.org/10.1016/j.jorganchem.2009.06.003
  12. Lee, J.; Chu, H. Y.; Kim, S. H.; Do, L. M.; Zyung, T.; Hwang, D.H. Opt. Mater. 2002, 21, 205.
  13. Gupta, D.; Katiyar, M.; Deepak, 0. Opt. Mater. 2006, 28, 295. https://doi.org/10.1016/j.optmat.2004.11.036
  14. Thomas, K. R. J.; Velusamy, M.; Lin, J. T.; Chien, C.; Tao, Y.;Wen, Y. S.; Hu, Y.; Chou, P. Inorg. Chem. 2005, 44, 5677. https://doi.org/10.1021/ic050385s
  15. Zhao, Q.; Jiang, C.; Shi, M.; Li, F.; Yi, T.; Cao, Y.; Huang, C.Organnometallics 2006, 25, 3631. https://doi.org/10.1021/om060037d

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