4.6 Article

Robust Phosphorescent Platinum(II) Complexes Containing Tetradentate (ONCN)-N-boolean AND-C-boolean AND-N-boolean AND Ligands: Excimeric Excited State and Application in Organic White-Light-Emitting Diodes

Journal

CHEMISTRY-A EUROPEAN JOURNAL
Volume 19, Issue 1, Pages 69-73

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201203687

Keywords

charge transfer; chelates; cyclometalation; organic light-emitting diodes; phosphoresence; platinum

Funding

  1. Innovation and Technology Commission of the HKSAR Government [GHP/043/10]
  2. Research Grants Council of Hong Kong SAR [HKU 7008/09P, T23-713/11]
  3. National Natural Science Foundation of China/Research Grants Council Joint Research Scheme [N HKU 752/08]
  4. Guangdong Special Project of the Introduction of Innovative RD Teams, China
  5. Guangdong Aglaia Optoelectronic Materials Co., Ltd.
  6. Hong Kong UGC Special Equipment Grant [SEG HKU09]

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The bright white lights: A series of highly robust platinum(II) complexes supported by tetradentate O N C N ligands with high emission quantum yields (0.72-0.93) and high T-d (>400 degrees C) have been synthesized. Among the complexes, that shown in the figure has strong excimer emission attributed to the monomer triplet excited state with a localized structure. The application of this low band-gap material on single-dopant organic or polymer white-light-emitting diodes (WOLED) is highlighted.

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