有机荧光共轭聚合物含有离域大π键,电子或能量可以在共轭聚合物主链上快速迁移,这一“分子导线”性质可使荧光信号成倍增大。此外,有机荧光共轭聚合物还具有较大的斯托克位移、良好的稳定性、较高的摩尔消光吸收系数等优点。通过合理设计,将金属离子识别基团键合至有机荧光共轭聚合物,得到的有机共轭聚合物荧光材料比小分子荧光材料更具优势。有机共轭聚合物荧光材料有多种合成方法,从反应合成类型的角度,结合设计理念、传感应用及检测机理等,综述了近年来有机共轭聚合物荧光材料应用于重金属离子检测的研究进展,并对其发展趋势进行了展望。
Organic conjugated polymer fluorescent materials have delocalized π bonds,and electrons or energy can migrate rapidly in the main chain of the conjugated polymer.This “molecular wire” property can multiply the fluorescence signals.In addition,organic fluorescent conjugated polymers also have the advantages of large Stokes shift,good stability,and high molar extinction absorption coefficient.By rational design,the metal ion recognition groups are bonded to the organic fluorescent conjugated polymer,and the obtained organic polymer fluorescent material has more advantages than small molecule fluorescent materials.There are many synthetic methods for organic conjugated polymer fluorescent materials.In this paper,from the perspective of reaction synthesis type,combined with design concepts,sensing applications and detection mechanisms,the recent advances in the application of organic conjugated polymer fluorescent materials for heavy metal ion detection in recent years were reviewed.The development trend was also prospected.
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基金资助
国家自然科学基金(21807062);青岛市自然科学基金(23-2-1-242-zyyd-jch);省部共建生物多糖纤维成形与生态纺织国家重点实验室(青岛大学)开放课题(KFKT202223)
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