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首页> 外文期刊>Polymers for advanced technologies >Thermal and photostabilization studies on carbohydrates functionalized with azo chromophoric system 2-[(E)-(3-hydroxynaphthalen-2-yl)diazenyl]benzoic acid
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Thermal and photostabilization studies on carbohydrates functionalized with azo chromophoric system 2-[(E)-(3-hydroxynaphthalen-2-yl)diazenyl]benzoic acid

机译：偶氮发色体系2-[（（E）-（3-羟基萘-2-基）二氮烯基]苯甲酸官能化的碳水化合物的热和光稳定化研究

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摘要

In the present work, 2-[(E)-(3-hydroxynaphthalen-2-yl)diazenyl]benzoic acid, an azo chromophoric system was prepared and incorporated onto carbohydrates such as starch and cellulose by dicyclohexylcarbodiimide coupling. The products were characterized by UV-visible, fluorescence, FT-IR and NMR spectroscopic methods. The results of the studies show that incorporation of the chromophoric system onto the polymeric core enhanced the light absorption, emission and light stabilization properties of the chromophoric system. The light fastening properties of chromophoric system and the carbohydrate-bound photochromic systems were compared. It shows that light stabilization of the chromophoric system greatly enhanced on attaching to the polymeric core materials. Thermal stability of the chromophoric system also enhanced on attaching to the biopolymeric core systems.
机译：在本工作中，制备了2-[（（E）-（3-羟基萘-2-基）二氮烯基]苯甲酸]偶氮发色体系，并通过二环己基碳二亚胺偶联将其掺入碳水化合物如淀粉和纤维素中。通过紫外可见，荧光，FT-IR和NMR光谱法对产物进行表征。研究结果表明，将发色体系结合到聚合物核上可增强发色体系的光吸收，发射和光稳定性能。比较了发色系统和与碳水化合物结合的光致变色系统的光固定特性。它表明发色体系的光稳定性在附着到聚合物核材料上时大大增强。发色系统的热稳定性在附着到生物聚合物核心系统上也得到了增强。

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