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, Nian Yong Zhu, Wai Yeung Wong, Hai Mei Qin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 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 Cu2X2ring. 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

Keywords

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

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry

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