具有荧光传感器性能的稀土配合物制备和性能研究

Study on Preparations and Fluorescent Properties of Rare Earth Complex with Property of Fluorescence Sensor

以氯化铕、2-噻吩甲酰三氟丙酮(HTTA)和硅酸钠为原料制备了新型的检测二氯甲烷中乙醇含量的稀土配合物。通过在溶有所制备的稀土配合物的二氯甲烷溶液中滴加无水乙醇,发现溶液的荧光强度逐渐增强,而且具备一定的规律性。所制备的新型稀土配合物通过高分辨质谱分析表明,其结构属于多核稀土配合物。在二氯甲烷溶液中加入乙醇会改变溶液的极性,使多核稀土配合物发生解离从而增强荧光强度。这种稀土配合物可以作为荧光传感器检测有机溶剂中乙醇的含量。

Europium chloride,2-thienylformyltrifluoroacetone and sodium silicate were used to synthesize new-style rare earth complex（Eu-TNS）.By adding into dichloromethane solution containing Eu-TNS,the fluorescent intensities were enhanced gradually and regularly.High-resolution mass spectrometry was used to detect the formula of Eu-TNS,which belongs to multi-core rare-earth complex.Polarity of solution increasing by adding absolute ethanol will cause Eu-TNS to dissociate,which enhances the fluoresceot intensities of Eu-TNS solution.This rare earth complex Eu-TNS can be employed as fluorescence sensor to detect the content of ethanol in organic solvent.