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Colorimetric sensing of fluoride ion by new expanded calix[4]pyrrole through anion-π interaction
Sanjeev P Mahanta1, B Sathish Kumar, Sambath Baskaran
1School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India.
Abstract:
Three new expanded calix[4]pyrroles were synthesized, where the two dialkylldipyrromethane units are linked via C-C double bonds. One of them, calix[2]bispyrrolylethene, colorimetrically senses fluoride ion only, owing to anion-π interaction in polar aprotic solvents.
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