Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Color Pure and Stable Blue Light Emitting Material Containing Anthracene and Fluorene for OLED

  • Park, Hyun-Tae (Department of Chemistry and RINS, Gyeongsang National University) ;
  • Oh, Dae-Hwan (Department of Chemistry and RINS, Gyeongsang National University) ;
  • Park, Jong-Won (School of Materials Science and Engineering and Engineering Research Institute (ERI), Gyeongsang National University) ;
  • Kim, Jin-Hak (School of Materials Science and Engineering and Engineering Research Institute (ERI), Gyeongsang National University) ;
  • Shin, Sung-Chul (Department of Chemistry and RINS, Gyeongsang National University) ;
  • Kim, Yun-Hi (Department of Chemistry and RINS, Gyeongsang National University) ;
  • Kwon, Soon-Ki (School of Materials Science and Engineering and Engineering Research Institute (ERI), Gyeongsang National University)
  • Received : 2010.03.31
  • Accepted : 2010.05.17
  • Published : 2010.07.20
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Abstract

A new blue light emitting anthracene derivative, 9,10-bis-(9',9'-diethyl-7'-t-butyl-fluoren-2'-yl)anthracene (BETF), has been designed and synthesized by a palladium catalyzed Suzuki cross-coupling. A theoretical calculation of the three-dimensional structure of BETF supports that it has a non coplanar structure and inhibited intermolecular interactions resulting in high luminescent efficiency and high color purity. BETF has good thermal stability with glass-transition temperature (Tg) of $131^{\circ}C$. The PL maximum of BETF in solution and film were 438 nm and 440 nm, respectively, showing pure blue emission. A multilayer device using BETF as emitting material exhibits maximum luminescence efficiency of 2.2 cd/A and a pure blue emission (Commission Internationale de L'Eclairage (CIE) coordinates of x = 0.15, y = 0.10).

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References

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