Synthesis and luminescent properties of platinum-containing polyynes with tetraacetylenic 9,9-dihexylfluorene units

Li Liu*, Zu-Xing Chen, Shi-Zhong Liu, Wai-Yeung Wong

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

2 Citations (Scopus)
9 Downloads (Pure)

Abstract

Soluble platinum(II) polyyne polymers trans-{Pt-[P(C4H 8N)3]2(C ≡ C)2R(C ≡ C)2-}n and trans-{Pt-[P(C4-H3O) 3]2(C≡C)2R(C≡C)2-} n (R=9,9-dihexylfluorene-2,7-diyl) have been prepared in good yields by CuI-catalyzed polymerization involving the dehydrohalogenating coupling of trans-{PtCl2[P(C4H8N)3] 2} and trans-{PtCl2[P-(C4H3O) 3]2} with H(C≡C)2R(C≡C) 2H, respectively. We report the optical spectroscopy of these polyplatinaynes. The influence of the heavy metal atom in these metal alkynyl systems on the intersystem crossing rate and the spatial extent of lowest singlet and triplet excitons was systematically characterized. Our investigations indicate that the organic triplet emissions can be harvested by the heavy-atom effect which enables efficient intersystem crossing from the S1 singlet excited state to the T1 triplet excited state.

Original languageEnglish
Pages (from-to)1020-1025
Number of pages6
JournalChinese Journal of Chemistry
Volume24
Issue number8
DOIs
Publication statusPublished - Aug 2006

Scopus Subject Areas

  • Chemistry(all)

User-Defined Keywords

  • Acetylide
  • Butadiyne
  • Fluorene
  • Platinum
  • Triplet emission

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