Synthesis And Properties Of Organic Electron Donors With Pyridine Group

Tetrathiafulvalene (TTF) and TTF derivatives are significant constitutional unit of organic optical, electronic and magnetic materials. They have an easily reversible redox couple and can be oxidized to plus radical cation. Because of providing electronic and unique redox properties, they have been widely researched in molecule and electron chemistry.Synthesis and properties of organic electron donors, such as EDT-TTF, BEDT-TTF, which are important derivatives, have been applied more and more widely. Nowadays, owing to the significant research component of organic conductors, the electromagnetic double functional materials have been concentrated on and used in molecule spintronics by increasingly amounts of researchers. Thanks to the self-assembling ability of BEDT-TTF, it would like to produce the compound with the stable metallic speciality, which used to form column stacking between the molecules.At the same time, pyridine group as a good coordinating group has access to complex with the transition metal ions. The TTF compounds having pyridine moiety would be good candidates for preparation of bifunctional TTF derivatives. While the compounds of TTF derivatives connected with Py would enhance the coupling among the organic π electrons, and be beneficial to organic ligand interact with d electrons from the metal. Thus the complexes of this type ligand are suitable to produce the electromagnetic bifunctional materials. Therefore, in the fields of organic functional materials, great interest is currently devoted to obtain organic/inorganic hybrid materials that combine TTF-Py with the transition-metal ions.Based on these purposes above, the major studies are as follows:1. In introduction, it briefly reviews the properties and important achievements of TTF derivatives, summerizes recent researches on redox active TTF-Py compounds and responses of proton to compounds with pyridine group.2. EDO-TTF-3-Py as a ligand, two metal complexes have been designed, synthesized and characterized by FT-IR and elemental analysis. The structures of these complexes have been characterized by single crystal X-ray diffraction. Their crystal cell, redox and coordination behaviors are also studied by electrochemical and spectral analysis.3. New compounds EDT-TTF-3-Py and EDT-TTF-4-Py have been synthesized for research. Both of them are characterized by a series of measures, such as FT-IR,’H NMR,13C NMR and MS. Crystals of these compounds have been prepared. The crystal structures have been used to measure by X-ray diffraction. And the properties of their redox and UV-vis spectrum have been researched.4. The corresponding UV-vis-NIR spectra and electrochemical responses of EDT-TTF-3-Py and EDT-TTF-4-Py to H cation have been studied.5. The azo compounds of TTF derivatives connected with pyridine have been synthesized.