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Updated: Jun 25, 2026

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
Published on: October 18, 2018
[Studies on rare earth ions complexation properties of tetranitrophenols-armed Aza-18-crown-6]
1College of Chemical and Environmental Science, Inner Mongolia Normal University, Huhhot 010022, China. zhangq@imnu.edu.cn
Abstract:
The synthesis of macrocyclic ligands appended with fluorescent or chromogenic chelators is a promising approach to developing metal--ion chemosensors because of the ion selectivity of macrocyclic ligands and the fluorescence or chromogenic response of the appended chelating groups. In the present paper, 1,10-dioxa-4,7,13,16-tetraaza-18-crown-6(L1) and 4,7,13,16-tetra(2-hydroxy-5-nitrobenzyl)-1, 10-dioxa-4,7,13,16-tetraaza-18-crown-6(L2) were synthesized and characterized via elemental analysis and 1H NMR spectrum. The complexation properties of L2 for H+, Ce3+, Nd3+, Sm3+, Eu3+, Gd3+, Tb3+, DY3+ and Yb3+ were studies by UV-Vis method in H2 -DMSO (
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