Synthesis and spectral properties of pyrene based calix[4]arene

A new pyrene-based calix[4]arene was synthesized. This compound (4) was examined for its fluorescent properties towards different metal ions (Mg2+, Ni2+, Ba2+, Ca2+, Cu2+, Pb2+, Zn2+) and anions (F−, Cl−, Br−, H 2 PO 4 - , NO 3 - , HSO 4 - , CH3COO−) by UV, NMR and fluorescence spectroscopy. Fluorescence spectroscopy demonstrated that 4 exhibited high affinity for Cu2+ and low affinity for Pb2+, Mg2+, F−. Quenching constant and stability constants for complexation of 4 with Cu2+ and F− have been determined according to literature.