Synthesis, characterization and luminescent properties of copper(I) halide complexes containing biphenyl bidentate phosphine ligand

Bu Lin Chen, Li Liu*, Xin Xin Zhong, Abdullah M. Asiri, Khalid A. Alamry, Guang Hua Li, Fa Bao Li, Nianyong ZHU, Wai Yeung WONG, Hai Mei Qin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Copper(I) halide complexes having thermally activated delayed fluorescence (TADF) and phosphorescence have attracted much attention. Here, a series of four-coordinate dinuclear copper(I) halide complexes, [CuX(bpbp)]2 (bpbp = 2,2′-bis(diphenylphosphino)biphenyl, X = I (1), Br (2) and Cl (3)), were synthesized, and their molecular structures and photophysical properties were investigated. The structural analysis reveals that two copper(I) centers are bridged by two halogen ligands to form a dinuclear structure with a four-membered Cu2X2 ring. These complexes exhibit yellow to blue emission in the solid state at room temperature and have peak emission wavelengths at 575–487 nm with microsecond lifetimes (τ = 6.2–19.8 μs) and low emission quantum yields (<0.01%). The emissions of 1–3 originate from MLCT, XLCT, and IL (intraligand) transitions. Three complexes displayed good thermal stability.

Original languageEnglish
Pages (from-to)3907-3919
Number of pages13
JournalJournal of Coordination Chemistry
Volume70
Issue number23
DOIs
Publication statusPublished - 2 Dec 2017

Scopus Subject Areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry

User-Defined Keywords

  • 2,2′-Bis(diphenylphosphino)biphenyl
  • Cu(I) complexes
  • Neutral
  • photoluminescence
  • synthesis

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