A “turn-on” lanthanide complex chemosensor for recognition of lead(<scp>ii</scp>) based on the formation of nanoparticles
作者:Benhua Xu、Xiaoliang Tang、Ji'an Zhou、Wanmin Chen、Haile Liu、Zhenghua Ju、Weisheng Liu
DOI:10.1039/c6dt02835g
日期:——
embedment and fixation of Tb3+ complexes. Furthermore, Tb-1 could effectively eliminate the signal interference from the short-lived fluorescence and improve the signal-to-noise ratio to increase the accuracy of the detection for Pb2+. An understanding of the recognition mechanism of the Tb3+ complex-based chemosensor and the application of the characteristic spectra of lanthanide ions might be able to provide
设计并合成了功能性酰胺型钳型配体,该配体可以有效捕获Tb 3+离子,从而形成基于磷光配合物的化学传感器Tb-1。化学传感器可以进一步与Pb 2+离子配位并显示开启磷光响应。通过稳态发光光谱,时间分辨发光光谱,电子显微镜和动态光散射对这种传感过程进行了详细分析,这表明Pb 2+诱导的氢氧化物纳米团簇的形成可以调节外部发光化合物的光信号。通过嵌入和固定Tb 3+复合物。此外,Tb-1可以有效消除短寿命荧光产生的信号干扰,提高信噪比,提高Pb 2+的检测精度。对基于Tb 3+络合物的化学传感器的识别机理的理解和镧系元素离子特征光谱的应用可能会为开发高选择性的光学化学传感器提供更多的机会。