Cucurbit[10]uril binding of heteroleptic iridium(iii) complexes: synthesis and photophysical characterization.

The supramolecular host-guest interaction between heteroleptic iridium(iii) complexes and cucurbit[10]uril (Q[10]) in an aqueous medium was investigated in this work. Both studied iridium complexes, [Ir(ppy)(bpy-(CHO))] (complex 1) and [Ir(ppy)(bpy-(COOH))] (complex 2), possessed two phenylpyridine ligands and a single R-bipyridine ligand. The formation of the encapsulated species (Q[10]·1 and Q[10]·2) was demonstrated by H NMR and luminescence studies.