Ortho-fluoro-azobenzene derivative and preparation method thereof

Abstract

The invention discloses an ortho-fluoro-azobenzene derivative and a preparation method thereof. The ortho-fluoro-substituted azobenzene derivative is prepared by a diazotization coupling method; two fluorine atoms are introduced into the ortho-position of azobenzene, so that the electronic cloud density of nitrogen-nitrogen double bonds can be effectively reduced; the red shifting of azobenzene molecular absorption spectroscopy can be realized; the stability performance of a cis-configuration is greatly improved. The method of synthesizing the ortho-fluoro-azobenzene through diazotization coupling reaction is simple and efficient; the yield is high; the obtained material has excellent optical performance, and is hopeful to be applied in the fields of light driving, light energy storage, supramolecular assembly and the like.

Description

technical field [0001] The invention relates to the preparation of an ortho-fluoroazobenzene, which has broad application prospects in the fields of solar energy storage and light drive. Background technique [0002] Functional group substitution is an effective means to control the photophysical properties of azobenzene, so designing and synthesizing azobenzene molecules substituted with different functional groups is the basis and key of this field. In past research, a large number of azobenzene molecules were synthesized. For different molecular structures of azobenzene, a large number of synthetic methods have been developed and studied in depth, and a relatively complete theory of azobenzene synthesis has gradually been formed. Different synthetic methods have their advantages as well as limitations. For example, the diazotization coupling reaction is the most commonly used method for the synthesis of azobenzene molecules. The reaction is mainly through the diazotiza...

AI Technical Summary

Problems solved by technology

Generally, the photoisomerization process of azobenzene molecules is driven by ultraviolet light, and ultraviolet light has a great pollution to the environment, which limits the application range of azobenzene

For example, in the in situ molecular switch, ultraviolet light is easy to scatter, and it is difficult to penetrate from tissues or cells. In addition, ultraviolet light can also cause damage to the organism itself.

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