Applications of Fluorescent Sensor Based on 1H-pyrazolo[3,4-b]quinoline in Analytical Chemistry
作者:Marek Mac、Tomasz Uchacz、Andrzej Danel、Hanna Musiolik
DOI:10.1007/s10895-013-1251-5
日期:2013.11
inorganic cations (lithium, sodium, barium, calcium, magnesium, cadmium, lead and zinc) in strongly polar solvent (acetonitrile). An electron transfer from the electro-donative part (receptor) of the molecule to the acceptor part (fluorophore) is thought to be the main mechanism that underlies functionality of the compound as a sensor. This process can be retarded upon complexation of the receptor moiety
荧光染料 2-[(2-Hydroxyethyl)-(1,3-diphenyl-1 H - pyrazolo[3,4- b ]quinolin-6-ylmethyl)-amino]ethanol (LL1)检查了它在检测小无机阳离子(锂、钠、钡、钙、镁、镉、铅和锌)方面的效率。该染料在实验室合成,并通过稳态和时间分辨荧光技术进行研究。该化合物用作荧光传感器,适用于检测强极性溶剂(乙腈)中的小无机阳离子(锂、钠、钡、钙、镁、镉、铅和锌)。从分子的电子给体部分(受体)到受体部分(荧光团)的电子转移被认为是化合物作为传感器功能的主要机制。该过程可以在受体部分与无机阳离子络合时被延迟。观察到含有指示剂的氨基醇对二值阳离子的灵敏度相对较高但选择性较差。然而,在加入一定量的水后,该传感器的选择性得到了增强(尤其是对铅阳离子)。讨论了传感器在分析应用中的初步结果。