The synthesis of a new mono tert-butyl ester mono pyrene acetamide calix[4]arene 2 and 5,11,17,23-tetra(tert-butyl)-25-pyrene acetamide-27-acid calix[4]arene 3, that both present pyrene fluorescent functionalities is reported. The binding properties towards a variety of transition and non-transition metal cations have been determined along with a fluorescence study. Particular selectivity to lead cations was observed
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