Physical and photophysical properties of a linear copper(I) complex of a bulky acenapthene-based NHC ligand

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Abstract

We report the first example of a charge-neutral linear 2-coordinate copper(I) complex bearing a sterically demanding acenaphthoimidazolylidene-based N-heterocyclic carbene ligand. The identity and geometry of the complex was confirmed by single-crystal XRD (X-Ray Diffraction) analysis. The complex is poorly emissive at room temperature, showing either ligand-centered (LC) emission at around 340 nm when excited at 300 nm or ligand-to-ligand charge-transfer (LLCT) emission at around 540 nm when excited at 420 nm; in chloroform, dual emission is observed upon photoexcitation at 300 nm. Nanosecond emission lifetimes were recorded for these processes. This is the first example of emissive linear copper(I) complexes containing this bulky NHC ligand.
Original languageEnglish
JournalJournal of Coordination Chemistry
VolumeLatest Articles
Early online date25 Jan 2021
DOIs
Publication statusE-pub ahead of print - 25 Jan 2021

Keywords

  • Copper complex
  • Linear complex
  • Acenaphthoimidazolylidene
  • Dual emission
  • DFT study

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