Bis coumarin podands and their complexes with Na+, K+ and Pb2+ cations

Abstract

Abstract The synthesis and characterization of some bis-7-oxabenzo-α-pyrone ended polyoxyethylenes is reported and their electronic spectra evaluated. Their fluorescence spectra showed cation specific spectral intensity changes in the presence of Na + , K + and Pb 2+ in acetonitrile due to the cation complexing.