Synthesis And Gelation Properties Of Tetrathiafulvalene(TTF) Derivatives

Low molecular organic gel is the three dimensional orderly aggregation that is self-assembly by the weak force between molecules,(such as the hydrogen,п-п stacking) in the organic solvent which is the relatively low molecular mass, it makes the solution form gel system between solid and liquid. Organic compound of forming a gel is the organogelator. Based on this unique structure and properties of gel, it has a potential application in oil, organic soft materials, molecular devices, molecular regulation of the functional aspects of biological macromolecules.In this thesis, two groups of compounds are mainly designed and synthesized, the first group of compounds is an amide-substituted derivative of TTF; A second group of compounds is pyrrole fuse TTF of derivatives. The structure of target compounds were characterized by the method IR,1H NMR, MALDI-TOF-MS. At the same time, testing the ability of forming gel in different solvents.The result of studying the properties of the compounds is that: the compounds (4a-c) can form stable gel in various organic solvents, the minimum gelation concentration of0.1wt%or less. And in the solvent of cyclohexane and carbon tetrachloride can form a transparent gels, while opaque gelother forms in other solvents. The result by FT-IR is that the role of intermolecular hydrogen bonds to form gel is the main driving force. The xerogel forming in the cyclohexane is a relatively perfect three-dimensional net structure by observing the SEM; Studying the electrochemical properties of the compounds by the method of Cyclic voltammetry shows that the redox process of the compounds is strictly reversible.