Re(I) sensitised near-infrared lanthanide luminescence from a hetero-trinuclear Re2Ln array

The trinuclear complexes Re(2)Ln (Ln = Nd, Yb or Er) contain two Re-I tricarbonyl units linked to a DTPA binding site via 2,2'-bipyridyl ligands; Ln(III)-centred emission is sensitised by the Re' MLCT excited states.