聚(对苯二甲酸丁二醇酯-co-对苯二甲酸丙二醇酯)基荧光共聚酯的制备及性能

Preparation and Properties of Poly(butylene terephthalate-co-triethylene terephthalate)-Based Fluorescent Copolyesters

以对苯二甲酸二甲酯、丁二醇、丙二醇、四氯苝-铜配位聚合物网络酐(TTAD)为单体,通过熔融缩聚反应制备了一系列荧光共聚酯,研究了TTAD含量对共聚酯荧光性能的影响。利用紫外分光光度计、核磁共振仪、荧光分光光度计等表征了共聚酯的化学结构和荧光量子效率。结果表明,共聚酯具有预期的化学结构,且具有高亮度、高荧光量子产率的特征,随着TTAD含量的增加,共聚酯呈现出从黄绿色到橙红色的荧光,不同共聚酯间的荧光差异明显,TTAD在共聚酯中不会发生聚集荧光猝灭。

A series of fluorescent copolyesters were prepared by melt polycondensation reaction using dimethyl terephthalate,butanediol,propylene glycol and 1,6,7,12-tetrachloroperylene tetracarboxylic acid dianhydride(TTAD)as monomer.The influence of tetrachlorophthalic anhydride content on the fluorescence performance of the copolyesters was studied.The chemical structure and fluorescence quantum efficiency of the copolyesters were characterized by UV spectrophotometer,nuclear magnetic resonance spectrometer and fluorescence spectrophotometer.The results show that the copolyesters have high brightness and high fluorescence quantum yield.With the increase of TTAD content,the copolyesters exhibit different fluorescence from yellow-green to orange-red.The TTAD in copolyesters does not undergo fluorescence aggregation quenching in the copolyesters.