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New polyamides with azo-chromophore groups

机译：新型带偶氮发色团的聚酰胺

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A series of four novel polyamides with semiflexible main chains were prepared from two azo-chromophore diamines: 2,4-diamino-4'-nitroazobenzene and 2,4-diamino-4-azo-(4'-nitroazobenzene)benzene. Polymers were obtained from diacid chlorides by the polycondensation reaction in DMA solution. The polymers were identified by infrared, ~1H NMR spectroscopy and elemental analysis. The thermal properties of these polymers were investigated using differential scanning calorimetry (DSC) method and thermogravimetric analysis. The presence of photoisomerisable azobenzene groups makes them interesting for the optical information storage and processing. We have checked that thin films casted on glass plates from these polymers are suitable substrates for holographic polarization grating recording realized by laser light of 514.5-nm wavelength. The kinetics of grating recording observed within the studied group of polymers is discussed in relation to structural properties of the polymers. Such type of materials could find potential applications in photonics.
机译：由两个偶氮-发色团二胺：2,4-二氨基-4'-硝基偶氮苯和2,4-二氨基-4-偶氮-（4'-硝基偶氮苯）苯制备了一系列具有半柔性主链的四种新型聚酰胺。在DMA溶液中通过缩聚反应从二酰氯中获得聚合物。通过红外，〜1H NMR光谱和元素分析鉴定聚合物。使用差示扫描量热法（DSC）和热重分析法研究了这些聚合物的热性能。可光异构的偶氮苯基团的存在使它们对于光学信息的存储和处理很有趣。我们已经检查了由这些聚合物浇铸在玻璃板上的薄膜是否适合用于通过514.5 nm波长的激光实现全息偏振光栅记录。在研究的一组聚合物中观察到的光栅记录动力学与聚合物的结构性质有关。这种类型的材料可以在光子学中找到潜在的应用。

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