Organometallic polymer light-emitting diodes derived from a platinum(II) polyyne containing the bithiazole ring

Wai Yeung WONG*, Gui Jiang Zhou, Ze He, Kai Yin Cheung, Alan Man Ching Ng, Aleksandra B. Djurišić, Wai Kin Chan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

The synthesis, thermal, and photoluminescence properties of novel platinum metallopolyynes of bithiazole derivatives trans-[-Pt(PR3) 2-C≡C-Ar-C≡C-]n (Ar = 4,4′-dibutyl-2, 2′- bithiazole-5,5′-diyl P1; 4,4′-dinonyl-2,2′- bithiazole-5,5′-diyl P2) and their molecular model complexes are described. The structural properties of the dinuclear model compound for PI have been examined by X-ray crystallography. In view of the electron-donating and electron- with-drawing nature of the thiazole rings in the main chain, a strong π-conjugated system that features unique donor-acceptor interactions is created, which results in optical bandgaps of 2.40 eV. The optical gap of the polymer is notably reduced as compared to that for the more electron-rich bithienyl analogue. Multi-layer polymer light-emitting diodes have been fabricated with the metallopolymer as the emitting layer, which give a green light color with the Commission Internationale de L'Eclairage (CIE) chromaticity coordinates of (0.26, 0.58) at 8 V.

Original languageEnglish
Pages (from-to)1319-1332
Number of pages14
JournalMacromolecular Chemistry and Physics
Volume209
Issue number13
DOIs
Publication statusPublished - 3 Jul 2008

Scopus Subject Areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

User-Defined Keywords

  • Bithiazole
  • Donor-acceptor compounds
  • Luminescence
  • Metal-polymer complexes
  • Photoluminescence
  • Platinum(II) polyynes

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