A library of ethylene oxide bridged ruthenium oligomers were synthesized, which function as host molecules for cationic guest, such as Li+, Na+, Ba2+, Mg2+, Cs+, and K+. The host properties of the ruthenium oligomers were investigated using liquid to liquid membrane ion transport studies. In addition, UV-Vis and NMR spectroscopy titration studies were performed in order to determine the binding efficiency and selectivity of the hosts for the various cationic guests. The binding constants were also determined for these host-guest pairs and it was found that the larger hosts tended to bind more strongly to the ions with the larger charge. A similar charge concept was also obtained for the small host-guest pairs.

Ruthenium tris-bipyridine oligomers as host systems for alkali and alkaline earth guests

245th National Meeting (2013)

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