| Tetrathiafulvalene (TTF) and TTF derivatives have been used in novel material chemistry and supramolecular chemistry, because they exhibit unique redox, optical, electronic and magnetic properties. For example, Langmuir-Blodgett film, materials of modified electrodes, nonlinear optical materials, anion and cation sensors, organic ferromagents, redox-fluorescence switches, and so on.During the latest decades, great interest is currently devoted to obtain organic/inorganic hybrid materials that combine the sulfur-rich organic donors with the transition-metal ions in TTF research fields. The TTF compounds having pyridine moiety would be good candidates for preparation of bifunctional TTF derivatives. While TTF-py derivatives without space would increase the coupling among the organicπelectrons (TTF and py group), and also the coupling between organic ligand and the metal d electrons. Thus the complexes of this type ligand are suitable to be bricks of potential molecular materials.Based on these purpose above, the major studies are as follows:1,Compound 2,3-dimethylthio-6-pyridyl-tetrathiafulvalene, DMT-TTF-py, has been synthesized. The electrochemical responses of the compound to H proton and the absorption spectra in a mixed solvent (CH2Cl2 and CH3CN) have been studied. Crystal of the protonated salt was prepared. The structure of this compound has been determined by single crystal X-ray diffraction.2,Four metal complexes of DMT-TTF-py have been designed, synthesized and characterized. The structures of these complexes have been determined by single crystal X-ray diffraction. Their redox and coordination behaviors were also studied by electrochemical and spectral analysis. 3,Surface modified Au-electrodes with metal-TTF derivatives were prepared by layer-by-layer assembling technique. The amorphous layers are polymers of {Am[M(TTFS4)]}n (M = Cu2+ and Ni2+, m = 0-2). The multilayers were characterized by techniques including SEM, UV-vis-NIR spectra and electrochemical behaviors.
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