Complexes of Eu(iii)(hfa)3 with a planar chiral P(iii) ligand (Phanephos): solvent-sensitive sign inversion of circularly polarised luminescence.

Complexes of Eu(iii)(hfa)3 with a C2-symmetric planar P(iii) ligand exhibited intense circularly polarised luminescence (CPL) due to 5D0 → 7F1 and 5D0 → 7F2 transitions, with the signs and shapes of CPL signals depending on the choice of solvent (acetone or chloroform).