Propanetricarboxylic acid ornamented multi-CeIII encapsulated phospho(III)tungstate and its electrochemical sensing properties

A propanetricarboxylic acid ornamented multi-CeIII encapsulated phospho(III)tungstate [H2N(CH3)2]4Na4H2[Ce4(HP)W4(H2O)14(H2PTCA)2O18][(HPIII)2W22O76]·16H2O (1, H3PTCA = 1,2,3-propanetricarboxylic acid) was obtained by a facile one-step reaction of Na2WO4·2H2O, H3PO3, Ce(NO3)·6H2O, itaconic (H2ICA) and dimethylamine hydrochloride. Notably, the polyanion 1 possesses neotype [(HPIII)2W22O76]12‒ fragment an unusual [HPIIIW4O18]8‒ unit bridged four Ce3+ centers in assistance two H2PTCA‒ ligands. It is worth emphasizing that ligands simultaneously chelate with WVI CeIII centers. Furthermore, composite carboxyl-functionalized multi-walled carbon nanotube (CMCN) utilized to modify glassy electrode (GCE) develop 1@CMCN/GCE electrochemical sensor. The sensor displays potential sensing property toward detection noradrenaline (NDL) low limit 2.10 μmol·L−1. This research will powerfully facilitate continuous investigations on rational design in-depth development structure-oriented rare-earth inserted phospho(III)tungstates tremendously promote their application developments drug testing, clinical diagnosis, food detection.