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报道了一种基于苯并噻二唑衍生物的荧光传感器用于检测金属铜离子和氟离子。通过紫外可见光谱和荧光光谱研究此传感器检测离子的能力。研究表明,在所测试的阴离子中,只有氟离子可以引起此荧光探针的吸收峰蓝移(从390 nm到383 nm),并伴随着一定强度的减弱。同样氟离子可以引起此荧光探针的荧光强度降低并且蓝移(从496 nm到488 nm)。在所测试的阳离子中,铜离子可引起荧光探针的吸收峰红移,荧光强度淬灭90%。此外,当加入铜离子和氟离子的先后顺序不同时,引起的荧光光谱变化也不同。
A fluorescence sensor based on benzothiadiazole derivatives was reported for the detection of metallic copper ions and fluoride ions. The sensor’s ability to detect ions was investigated by UV-vis and fluorescence spectroscopy. Studies have shown that only fluorine ions can cause a blue shift of the absorption peak of this fluorescent probe (from 390 nm to 383 nm) among the tested anions with a certain decrease in intensity. The same fluoride ion causes the fluorescence intensity of this fluorescent probe to decrease and blue shift (from 496 nm to 488 nm). Among the cations tested, copper ions caused a red shift in the absorption peak of the fluorescent probe, and the fluorescence intensity was quenched by 90%. In addition, when the order of addition of copper ions and fluoride ions is different, the fluorescence spectrum changes are also different.