solutions. Fluorescence was quenched upon coordination, showing selectivity for Cu(II) over Mn(II), Fe(III), Ni(II), Pd(II), Zn(II), Ca(II), Hg(II), Na(I) and K(I) in a concentration range of 1.00 to 10.0 × 10‐7 mol L‐1. Good results were observed for sensor 1 derived from 2‐formylpiridine. Benesi‐Hilderbrand formalism indicates that the most abundant species formed have 2:1 (metal/ligand) ratio with
合成了一种新的含
芴的席夫碱传感器,并进行了研究,以测定
二甲基亚砜溶液中的
金属离子。配位猝灭后,荧光猝灭,显示出对Cu(II)的选择性高于Mn(II),Fe(III),Ni(II),Pd(II),Zn(II),Ca(II),Hg(II),Na (I)和K(I)的浓度范围为1.00至10.0×10 -7 mol L -1。衍生自2-甲酰基
吡啶的传感器1观察到良好的结果。Benesi-Hilderbrand形式主义表明,形成的最丰富的物种的比例为2:1(
金属/
配体),计算的出价常数为1.74×10 12 L 2 mol -2,与Stern-Volmer常数K SV为2.26× 10 12 升2 摩尔-2。Cu(II)的检出限(LOD)为0.037μmolL -1,在3.00至7.00×10 -7 mol L的
铜(II)浓度范围内,相对标准偏差(R
SD)为3.19%。‐1。