Synthesis and anion binding properties of novel 3,12- and 3,7-bis(4'-nitrophenyl)-azo-caIix[4]pyrrole receptors

摘要

Two novel 3,12- and 3,7-bis(4'-nitrophenyl)-azo-5,5,10,10,15,15,20,20-octamethyl calix[4]pyrroIes were prepared and studied as potential anion binders for AcO and H2PO_4~- ; the isomeric pair not only allowed for the colorimetric detection but also helped to discriminate the geometrically different anions.