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

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

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


Authors

Jack D. Fradgley

Andrew T. Frawley



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.

Citation

Fradgley, J. D., Frawley, A. T., Pal, R., & Parker, D. (2021). Striking solvent dependence of total emission and circularly polarised luminescence in coordinatively saturated chiral europium complexes: solvation significantly perturbs the ligand field. Physical Chemistry Chemical Physics, 23(19), 11479-11487. https://doi.org/10.1039/d1cp01686e

Journal Article Type Article
Acceptance Date Apr 28, 2021
Online Publication Date Apr 28, 2021
Publication Date 2021-05
Deposit Date Jun 24, 2021
Publicly Available Date Mar 29, 2024
Journal Physical Chemistry Chemical Physics
Print ISSN 1463-9076
Electronic ISSN 1463-9084
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 23
Issue 19
Pages 11479-11487
DOI https://doi.org/10.1039/d1cp01686e

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