Preparation And Properties Of Eutectic Materials Based On TTF

Compared with traditional inorganic eutectic materials,organic eutectic materials often show more unique advantages,such as high integration,good flexibility,strong modifiability and so on.So it has been widely used both in production and life.However,most of the Organic eutectic material are just composed of single component,and the singleness of the components determines that it has only one property.Therefore,the synthesis of two-component or even multi-component organic crystal materials has attracted much attention,the application of organic eutectic materials to the removal of pollutants in the environment has also become a new hot issue in the environmental field.The research of this thesis aims at preparing organic eutectic materials with specific structures and function by selecting suitable raw material systems.And changing the charge transfer mode of the materials by adjusting the energy band structure of the crystal materials,the crystals also exhibit more novel properties by utilizing the synergistic and aggregation effect between molecules.In this experiment,taking the hydrogen and halogen bonds as representative weak interactions for the research system.Two different types of two-components HOF(hydrogen bond organic framework)materials were prepared,and synthesized four new bromine substituted compounds based on TTF(tetrathiafulvalene)structure.The effects of weak intermolecular interactions on the photoelectric properties and self-assembly structures of crystals has been discussed.Following are the specific results:(1)crystals 1 and 2 were prepared based on the TTF groups,the structures and properties were analysis.The research showed that there are two kinds of proton transfer in the crystals,because of the different hydrogen bond types and assembly modes,the light current intensity showed significant difference.At the same time,the redox active ligand was successfully introduced into HOFs,which bring a new function into the framework system.(2)The molecular structure of TTF modified by pyridine group and Br was designed.By adjusting the substitution positions of pyridine group and Br atom on benzene ring,The influence of halogen bond interaction on the TTF molecular assembly structure was mainly investigated.The purpose of regulating TTF molecular assembly structure at monoatomic level was realized.The foundation was laid for the accurate construction of organic molecular surface self-assembly to form nanostructure at molecular level.