New platinum(II) one-armed Schiff base complexes for blue and orange PHOLEDs applications

Jie Zhang*, Xunjin ZHU, Aiguo Zhong, Wenping Jia, Fengshou Wu, Dan Li, Hongbo Tong, Chenglin Wu, Wenyuan Tang, Ping Zhang, Lei Wang, Deman Han

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

The condensation of different groups substituted salicylaldehydes with aniline and 2,4,5-trifluoroaniline, afforded five one-armed Schiff base ligands HL1, HL2, HL3, HL4 and HL5. And their platinum(II) complexes Pt(L1)2, Pt(L2)2, Pt(L3)2, Pt(L4)2, Pt(L5)2 and PtL5·DMSO were prepared through the metallation of ligands with K2PtCl4. All ligands and complexes were characterized by 1H NMR, infrared spectroscopy, mass spectrometry and single crystal X-ray diffraction. And their thermal stability, photophysical properties, and electrochemical behaviors were investigated in detail. Using these complexes as phosphorescent emitting materials, blue to orange light-emitting devices were fabricated with moderate efficiencies. The maximum current efficiency, power efficiency, and brightness for the 3.0 wt % Pt(L3)2 doped OLED are 1.12 cd A−1, 0.62 l m W−1 and 1521 cd m−2, respectively. Given the synthetic simplicity and ease of structural variation, the results here indicate that these platinum(II) Schiff base complexes are good candidates for phosphorescent OLEDs.

Original languageEnglish
Pages (from-to)153-162
Number of pages10
JournalOrganic Electronics
Volume42
DOIs
Publication statusPublished - 1 Mar 2017

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

User-Defined Keywords

  • PHOLEDs
  • Platinum complexes
  • Schiff base

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