Striking solvent dependence of total emission and circularly polarised luminescence in coordinatively saturated chiral europium complexes: solvation significantly perturbs the ligand field

Jack D. Fradgley, Andrew T. Frawley, Robert Pal, David Parker*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

8 Citations (Scopus)

Abstract

Examination of total emission and circularly polarised luminescence (CPL) spectra of three 9-coordinate Eu(iii) complexes with well-defined speciation shows that the ligand fields of these C3 symmetric complexes are extremely sensitive to solvent polarity, even when solvent is not present in the first coordination sphere. The energies, intensities, and (for CPL) the sign of some transitions vary with solvent polarity. These observations are rationalised by analysis of the factors that control total and circularly polarised emission, and have important implications for design of responsive luminescent Ln(iii) probes.

Original languageEnglish
Pages (from-to)11479-11487
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume23
Issue number19
Early online date28 Apr 2021
DOIs
Publication statusPublished - 21 May 2021

Scopus Subject Areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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