Farzaneh Maliji - Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
Rahman Hosseinzadeh - Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
Shahram Ghasemi - Department of Applied Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran

The design and synthesis of receptors that have the ability to selectively bind and sense neutral and ionic species is a new emerging topical field of supramolecular chemistry. The importance of spatial pre-organization of the complexing groups has been recognized and calixarenes in particular have been developed as structures for the preparation of selective receptors [1]. The versatility of calixarenes has been extensively used as their scaffolds present a hydrophobic aromatic core that can be functionalized easily at both the upper and lower rims [2]. Such receptors are generally achieved through combining well-defined recognition centers with signaling moieties to enable detection of ion binding via optical and electrochemical methods [3]. We present here a ferrocene reporting unit that has been successfully incorporated onto the lower-rim of calix[4]arene through click chemistry. This novel redox-active receptor is expected to be used as an electrochemical sensor to recognize ions with a good selectivity. The new ferrocene-based calix[4]arene was characterized by 1H and 13C NMR spectra. The details of this procedure and characterization of receptor will be reported during the Seminar.