Synthesis, characterization, luminescence and nonlinear optical (NLO) properties of truxene-containing platinum(II) alkynyl complexes

Carmen Ka Man Chan, Chi Hang Tao, King Fai Li, Keith Man-Chung Wong, Nianyong ZHU, Kok Wai CHEAH*, Vivian Wing Wah Yam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

A series of luminescent trinuclear platinum(II) alkynyl complexes containing dihydro-5H-diindeno[1,2-a;1′,2′-c]fluorene (truxene) as the core and aryl alkynyl ligands with different electronic properties at the periphery has been successfully synthesized and characterized. The electronic absorption, emission, nanosecond transient absorption and electrochemical properties of these complexes have been reported. These complexes showed long-lived emissions in degassed benzene solution at room temperature, and their emissions have been assigned to originate from triplet states of intraligand (IL) character with some mixing of metal-to-ligand charge-transfer (MLCT) character. The luminescent platinum(II) alkynyl complexes are found to show two-photon absorption (2PA) and two-photon induced luminescence (TPIL) properties, and their two-photon absorption cross-sections have been determined to be 6-51 GM upon excitation at 720 nm.

Original languageEnglish
Pages (from-to)1163-1173
Number of pages11
JournalJournal of Organometallic Chemistry
Volume696
Issue number6
DOIs
Publication statusPublished - 15 Mar 2011

Scopus Subject Areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

User-Defined Keywords

  • Luminescence
  • Metal alkynyls
  • Platinum(II) complexes
  • Transient absorption
  • Truxene
  • Two-photon induced luminescence

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