香豆素-苯并噻唑荧光探针的合成及性质研究

The synthesis and property research of coumarin-benzothiazole fluorescent sensor

为了快速、便捷地检测铁离子,设计并合成了一种新型香豆素-苯并噻唑荧光探针(BC-1)并将其应用于Fe(Ⅲ)检测。探针BC-1以香豆素为荧光团并引入硫原子和氧原子作为识别基团以达到良好的检测效果。Fe(Ⅲ)与识别基团络合后,探针BC-1表现出猝灭型的检测效果,并能在短时间内对Fe(Ⅲ)表现出高选择性和高灵敏度地识别。另外探针BC-1合成路线简便、成本低、产率高,因此探针BC-1除了可以在自然水系、工业废水和生物体内很好的检测Fe(Ⅲ)外,还有很好的市场化前景、便于向大众推广。

In order to detect iron ion quickly and conveniently, a fluorescent sensor（BC-1） for iron ion bearing coumarin-benzothiazole derivative has been designed and synthesized by a novel way. Sulphur and oxygen heteroatoms were introduced as chelating site and ethyl-7-hydroxycoumarin-3-carboxylate group was introduced as fluorophore to achieve recognition. After complexing of iron ion and identification group, BC-1 which served as an ON–OFF type sensor displayed high selectivity and sensitivity for iron ion in a very short time. BC-1 was designed with ease of synthesis, low cost and low yield. Therefore, the sensor has potential in physiological and environmental applications,including connate water and industrial waste water, systems for iron ion detection.