基于Glaser偶合反应的铜离子探针的合成及性能

Synthesis and characterization of Cu iron fluorescence probes based on Glaser coupling reaction

为准确检测溶液中铜离子浓度,首先合成结构简单的有机小分子铜离子探针,利用探针分子能够发生Glaser偶合反应的性质对铜离子进行实时检测,研究探针分子结构对铜离子响应的灵敏度.其次通过核磁共振确定探针分子的结构,利用紫外吸收光谱和荧光光谱分析探针分子对铜离子的识别作用.最后通过紫外光谱确定荧光光谱的激发波长为370 nm,且荧光发射强度随铜离子浓度的增加而减弱,随时间的延长而降低.

In order to test copper ion in solution,firstly, fluorescent copper ion probes with simple structure is synthesized, the copper ion could be detected by Glaser coupling reaction of the fluorescent probe. Then,the molecular structure of copper ion probe is confirmed by i HNMR data. The UV-Vis and fluorescence spectra were used to study the role of the probe for recog- nizing copper ion. The fluorescence spectra were measured at 370nm determined by the UV-Vis spectra. The results of fluorescence spectra show that the fluorescence emission intensity is weakened with the increase of concentration of copper ion,and decreased with the extension of reaction time.