A kind of preparation method and application of hyperbranched azo polymer

Abstract

The invention relates to a preparation method and applications of a hyperbranched azo polymer, belonging to the organic synthesis field. The preparation method comprises the steps: firstly, performing nitroreduction and carboxyl acylation by taking p-nitrobenzoic acid as a raw material, to obtain an A2 type monomer azo-bi(benzoyl chloride) with an azobenzene structure, and then reacting the A2 type monomer azo phthaloyl dichloride with a B3 type monomer glycerol according to certain mole ratio to obtain the hyperbranched azo polymer. The materials of the obtained hyperbranched azo polymer has higher thermo-optical coefficient which is more than ten times of that of inorganic materials such as borosilicate glass, zinc silicate glass, silica glass and the like, and the material provides a possibility for developing a novel digital thermo-optical switch with low driving power.

Description

technical field

[0001] The invention belongs to the field of organic synthesis and relates to the preparation of azobenzene photochromic compounds. Specifically refers to the use of azobenzene chromophore molecules as monomers for the synthesis of hyperbranched macromolecules to prepare hyperbranched azo polymer materials with photochromic properties; Potential applications in the field of optoelectronics such as storage, optoelectronic modulators, and optical switching. Background technique

[0002] As a new type of functional material, azobenzene photochromic compounds can be widely used in frontier fields such as optical information storage, optical conversion devices, and optical switches. In the past few decades, linear azo polymers with side-chain or main-chain structures have been intensively studied. Recently, dendrimers containing azobenzene structures have attracted considerable attention and have been intensively studied. Compared with dendritic azo compounds, ...

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