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.
|Number of pages||9|
|Journal||Physical Chemistry Chemical Physics|
|Early online date||28 Apr 2021|
|Publication status||Published - 21 May 2021|
Scopus Subject Areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry