A series of ruthenium macrocycle polyamine complexes were synthesized and characterized by 1H NMR spectroscopy and mass spectrometry. The macrocycle ligands were prepared by reacting 4,4’–diformyl-2,2’-bipyridine with the appropriate polyamine. The resulting ligands were coordinated to a ruthenium center using Ru(bpy)2Cl2 to yield the target tris-bipyridine host framework. These complexes were investigated as host molecules for alkaline earth cationic guests such as alkali, alkaline earth, and transition metals. Fluorescence spectroscopy titration experiments were used to investigate the binding affinities of the host complexes for the cations, as well as to investigate the effects that pH play in a host-guest system.

Synthesis, characterization, and ion-binding studies of Ru(bpy)32+ macrocycle host complexes

249th National Meeting (2015)

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