Strong circularly polarized luminescence of an octahedral chromium(iii) complex

The chiral spin-flip luminophore [Cr(ddpd)(2)](3+) can be resolved into enantiopure material by chiral HPLC. The corresponding enantiomers show very high luminescence dissymmetry factors of up to divide g(lum) divide approximate to 0.093 in circularly polarized luminescence (CPL) measurements for the ruby-like phosphorescence transition E-2/T-2(1) -> (4)A(2) in the near-IR region around lambda approximate to 775 nm.