Journal
DALTON TRANSACTIONS
Volume 41, Issue 34, Pages 10182-10188Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2dt30754e
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Funding
- DST [SR/S1/OC-63/2010]
- UGC [40-75/2011 (SR)]
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A new terphenyl-based macrocycle 5 incorporating phenanthroline as a fluorophore has been designed, synthesized and examined for its recognition ability toward various cations (Pb2+, Hg2+, Ba2+, Cd2+, Ag+, Zn2+, Cu2+, Ni2+, Co2+, K+, Mg2+, Na+ and Li+) by UV-vis, fluorescence and NMR spectroscopy. The receptor 5 showed highly selective 'Off-On' fluorescence signaling behavior for Zn2+ ions in THF. Interestingly, the addition of H2PO4- ions to the [5-Zn] complex regulates the binding site for additional Zn2+ ions and hence leads to a blue-shifted emission band.
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