4.7 Article

Highly efficient deep-blue phosphorescence from heptafluoropropyl-substituted iridium complexes

Journal

CHEMICAL COMMUNICATIONS
Volume 51, Issue 1, Pages 58-61

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc07768g

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Funding

  1. industry technology R&D program of MOITE/KEIT [10048317]

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New deep-blue iridium complexes, consisting of a heptafluoropropyl (HFP) substituent at the 3' position of 2',4 ''-difluorophenyl, have a deep HOMO level and decreased shoulder electronic transition and inhibit self-quenching due to the sterically hindered group without conjugation. An OLED using (HFP)(2)Ir(mpic) exhibited a maximum EQE of 21.4% with a CIE of (0.146, 0.165).

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