Studies On Synthesis, Characterization And Recognition Properties Of Calix[4]Arene Based Redox Active Receptors

Supramolecular electrochemical recognition is an emerging and interesting subject, which focuses on developing novel redox-active receptors. It is great important to both the field of supramolecular chemistry and practical domain of advanced techniques of ion transport, molecular switch, electrochemical molecular devices and chemical sensors. Therefore, a study on design, synthesis and supramolecular recognition properties of calix[4]arene based redox-active receptors was carried out. The main results are as follows:1. Recent research progress of calixarene based redox-active receptors, including molecular design, chemical synthesis and their supramolecular electrochemical recognition and sensing properties, was briefly reviewed.2. Three novel calixarene based redox-active receptors containing tetrahedral MoFeCoS cluster cores were prepared via the selective O-dial- kylation, tosylation, iodination and isolobal displacement reactions. The electrochemical properties of these receptors were investigated by the cyclic voltammetry and differential pulse voltammetry techniques.3. The first examples of 1, 2, 3-triazole-bridged ferrocene calixarene receptors were synthesized via the click reactions in excellent yields. The recognition and sensing properties of these receptors were studied by the cyclic voltammetry. It was found that such receptors show a high selectivity towards Eu3+ and H2PO4-.4. A total of 16 novel calixarene based receptors were synthesized. Their structures were fully characterized by elemental analyses, IR, 1H NMR, 13C NMR and MS spectroscopies, as well as for one calixarene derivative and two organometallic compounds being determined by X-ray diffraction techniques.