Bulletin of the Korean Chemical Society

  • 제33권1호
  • /
  • Pages.183-188
  • /
  • 2012
  • /
  • 0253-2964(pISSN)
  • /
  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Synthesis and Crystal Structure of Blue Phosphorescent mer-Tris(2',6'-difluoro-2,3'-bipyridinato-N,C4') Iridium(III)

  • Jung, Na-Rae (Division of Science Education & Department of Chemistry, Kangwon National University) ;
  • Lee, Eun-Ji (Division of Science Education & Department of Chemistry, Kangwon National University) ;
  • Kim, Jin-Ho (Division of Science Education & Department of Chemistry, Kangwon National University) ;
  • Park, Hyoung-Keun (Division of Science Education & Department of Chemistry, Kangwon National University) ;
  • Park, Ki-Min (Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University) ;
  • Kang, Young-Jin (Division of Science Education & Department of Chemistry, Kangwon National University)
  • 투고 : 2011.11.10
  • 심사 : 2011.11.18
  • 발행 : 2012.01.20
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초록

A blue phosphorescent $Ir(dfpypy)_3$ (dfpypy:fluorinated pyridine-pyridine ligand) complex with meridional configuration has been synthesized by newly developed effective method and its solid state structure and photoluminescence are characterized. For this complex, mer-$Ir(dfpypy)_3$, the glass-transition and decomposition temperatures appear at $160^{\circ}C$ and $384^{\circ}C$ respectively in TGA and DSC experiments, which indicates that this complex has high thermal stability. In a crystalline structure, an average Ir-C bond length of mer-$Ir(dfpypy)_3$ is slightly longer than that of fac-$Ir(dfpypy)_3$, which assumed to be due to the weak trans-influence. The absorption and emission spectra are observed more red-shifted in mer-$Ir(dfpypy)_3$ than fac-$Ir(dfpypy)_3$. In addition, the former is readily oxidized than the latter in electrochemical behavior.

키워드

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