【作者】 杜玉群； 贾文宁； 张运生； 张宇轩； 颜红侠；

【Author】 Yuqun Du;Wenning Jia;Yunsheng Zhang;Yuxuan Zhang;Hongxia Yan;School of Science, Northwestern Polytechnical University;

【机构】 西北工业大学理学院；

【摘要】 不含π-芳香族结构的荧光聚合物近年来引起了广泛的关注。在此,我们通过一锅法进行A₂+B₃酯化反应合成了一系列生物基脂族超支化聚酯。有趣的是,所得到的不含常规荧光单元的超支化聚酯在365 nm紫外光下表现出意想不到的明亮的蓝色荧光。并发现,当加入金属离子时,超支化聚酯溶液的荧光强度降低;且加入Fe³⁺时,荧光降低特别明显。随着Fe³⁺浓度的增加,AG-1溶液的荧光强度急剧下降。当Fe³⁺离子浓度为1×10^-3 mol/L时,聚酯的荧光完全消失。因此,生物基超支化聚酯可作为检测Fe³⁺的荧光探针。更多还原

【Abstract】 Non-conventional fluorescent polymers withoutπ-aromatic structure have attracted extensive interest in recent years.Herein,we synthesized a series of fully bio-based aliphatic hyperbranched polyesters via one-pot A₂+B₃esterification reaction.Intriguingly,the resultant hyperbranched polyesters carrying no conventional fluorescent units exhibit unexpected bright blue fluorescence under 365 nm UV light.The results show that the fluorescence intensity of the polyester solutions decreases in all cases,but the decrease varies remarkably with the kinds of metal ions.Furthermore,the fluorescence intensity of the polyester solution decreases drastically as the increase of Fe³⁺concentration.When the concentration of Fe³⁺is 1×10^-3 mol/L,the fluorescence of polyester completely disappears.The bio-based hyperbranched polyester could act as a potential fluorescent sensor for effectively detecting the Fe³⁺.更多还原