Photochromic hyperbranched azopolyamide and preparation method thereof

A technology for decomposing azo polyamides and azo polyamides, which is applied in the field of hyperbranched azo polyamides and its preparation, can solve the problem of poor mechanical processing performance and thermal stability of azo polymers, and photoinduced trans-cis isomerization effect The efficiency is not high, the optical performance is not significant enough, etc.

Inactive Publication Date: 2019-10-18
LINGNAN NORMAL UNIV
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Problems solved by technology

[0004] Among the many factors affecting the photoinduced trans-cis isomerization effect of azo polymers, the electrostatic interaction between the dipoles of azophenyl groups is one of the main factors. The known photoinduced trans-cis isomerization of azo polymers The efficiency of the isomerization effect is not high, so that its optical properties are not significant enough, and the known azo polymers have poor mechanical processing properties and thermal stability. Overcoming these obstacles, azo polymers are used in photoelectric information functional materials. can have a more practical and efficient use

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  • Photochromic hyperbranched azopolyamide and preparation method thereof
  • Photochromic hyperbranched azopolyamide and preparation method thereof
  • Photochromic hyperbranched azopolyamide and preparation method thereof

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Embodiment Construction

[0030] The present invention is further described in conjunction with the following examples.

[0031] The present invention is further described in conjunction with the following examples. The photochromic hyperbranched azopolyamide of the present embodiment, as figure 1 Shown, the structural formula of hyperbranched azopolyamide, the hyperbranched azopolyamide is a polymer structure. The hyperbranched azopolyamide (hereinafter referred to as HBAPE) not only has the optical activity of the azo group, but also has good thermodynamic stability and excellent processing performance of polyamide substances.

[0032] The photochromic hyperbranched azo polyamide is obtained by the following preparation method:

[0033] S1: In a three-necked flask equipped with a reflux condenser and an HCl receiving device, add 21 grams of trimesic acid with a concentration of 0.10 mol and 100 ml of thionyl chloride, and then add dropwise 1 ml of N,N-dimethylmethane Amide is used as a catalyst, t...

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Abstract

The invention provides a photochromic hyperbranched azopolyamide and a preparation method thereof. The method includes: taking 4, 4'-azodianiline and trimesic acid as the raw materials, firstly converting trimesic acid into trimesoyl chloride, and then utilizing the reaction activity of acyl chloride group and amino to synthesize hyperbranched azopolyamide by low temperature solution polycondensation. The photochromic hyperbranched azopolyamide has the optical activity of azo group, and also has good thermodynamic stability and excellent processability of polyamide substances, and a UV-Vis spectrum is employed to study the photoisomerization characteristics and photo-trans-cis isomerization kinetics of the synthesized azo polymer.

Description

technical field [0001] The invention relates to the field of research and preparation of chemical polymer materials, in particular to a photochromic hyperbranched azo polyamide and a preparation method thereof. Background technique [0002] Hyperbranched polymer is a highly branched polymer with a three-dimensional dendritic structure and a large number of intramolecular voids. With its unique structure and excellent performance, it has become a research hotspot in the field of polymer chemistry. Compared with dendritic polymers, the geometric shape of hyperbranched polymers has no dendritic macromolecular rules, a quasi-spherical molecular structure, a wider molecular weight distribution, and more geometric isomers, but it has similar characteristics to dendritic polymers. Such as low viscosity, high solubility, etc., in addition, it has good film-forming properties, simple synthesis process, low cost, and is conducive to large-scale production. Therefore, hyperbranched pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/32C09K9/02
CPCC08G69/32C09K9/02C09K2211/1425
Inventor 冯宗财汪德凤宋秀美
Owner LINGNAN NORMAL UNIV
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