Synthesis of metalloporphyrin containing calix[4]arene and calix[4]pyrrole as ionophores in anion selective electrodes

Abstract

This thesis reported the synthesis of metalloporphyrins containing calix[4]arene (ML1) and calix[4]pyrrole (ML2) However, only ML1 was used as ionophores in anion selective electrodes. ML1 was synthesized by metallation of L1 and metal salts. The L1 was obtained from the acid catalyzed condensation of benzaldehyde and 1,3-calix[4]arene-bis-dipyrromethane (4). Compound ML1 (ZnL1, CuL1, CoL1, FeL1 and SnL1) was used as ionophore in ion selective electrodes. The potentiometric response of anions for ionophores (ZnL1, CuL1, CoL1 and FeL1) showed the selectivity toward iodide with perchlorate and thiocyanate as interference ions. Moreover, the potentiometric response of anions for ionophores SnL1 exhibited selectivity toward for salicylate more than other anions, with iodide as an interference ion.