Rational design of aminoanthraquinones for colorimetric detection of heavy metal ions in aqueous solution
作者:Elena Ranyuk、Alexei Uglov、Michel Meyer、Alla Bessmertnykh Lemeune、Franck Denat、Alexei Averin、Irina Beletskaya、Roger Guilard
DOI:10.1039/c1dt10677e
日期:——
prepared with the aim of assaying metal cations. The outstanding UV-Vis absorption properties of the 1-aminoanthraquinone chromophore allowed the efficient visual detection and quantification of copper(II) ions by chelatorsL1–L3 in buffered aqueous solution. Moreover, the visible response of L2 is not interfered by addition of large excesses of 13 common metal ions, whereas chemosensor L3 produces also
为了测定金属阳离子,制备了一种水溶性比色化学传感器家族,其掺入了被带有多胺链的功能化的蒽醌信号亚基,该多胺链带有亲水性二乙氧基磷酰基部分。1-氨基蒽醌生色团具有出色的UV-Vis吸收特性,可通过螯合剂L 1 - L 3在缓冲水溶液中进行可视检测和定量铜(II)离子。此外,L 2的可见响应不会因添加大量过量的13种常见金属离子而受到干扰,而化学传感器L 3在等摩尔量的铅存在下也会产生颜色变化(II)。考虑到两个吸收最大值之间的134 nm间隙,可以设想同时比色定量测定铅和铜。详细电位和分光光度分析的Cu 2+络合大号2和大号3,以及铅2+和Cd 2+由大号3,以获得一个更深入的了解pH依赖性形态和理解了颜色变化被承担过程。此外,[Pb L 3 ] 2+配合物的内部配位球通过NMR光谱法探测。