Spiral frameworks constructed by 1,2-phenylene-dioxydiacetic acid as highly sensitive and selective luminescent probes to detect PO43- ions in aqueous solutions

摘要

Three novel clubbed photo-luminescent lanthanide-organic frameworks 1D coordination polymers, [Ln(L)(NO3)(H2O)(2)](n) (1-3) (where Ln is La, Ce, and Pr, respectively, and H2L = 1,2-phenylenedioxydiacetic acid), have been synthesized in a concise and reproducible manner under hydrothermal conditions. It is worth noting that the H2L ligand is used for the first time in synthesis complexes. 1, 2 and 3 possess same structure with the same topology of [3(boolean AND)3; 4(boolean AND)2; 5] built using Ln-L 1D helical chains. Fluorescence properties of the obtained complexes have been studied in detail, revealing that 3 can sensitively and selectively detect pollutant PO43- among various anions.