摘要
A propanetricarboxylic acid ornamented multi-CeⅢencapsulated phospho(Ⅲ)tungstate[H_(2)N(CH_(3))_(2)]_(4)Na_(4)H_(2)[Ce_(4)(HP)W_(4)(H_(2)0)_(14)(H_(2)PTCA)_(2)O_(18)][(HPⅢ)_(2)W_(22)O_(76)]·16H_(2)O(1,H_(3)PTCA=1,2,3-propanetricarboxylic acid)was obtained by a facile one-step reaction of Na_(2)WO_(4)·2H_(2)O,H_(3)PO_(3),Ce(NO_(3))·6H_(2)O,itaconic acid(H2ICA)and dimethylamine hydrochloride.Notably,the polyanion of 1 possesses a neotype[(HP^(Ⅲ))_(2)W_(22)O_(76)]12-fragment and an unusual[HP^(Ⅲ)W_(4)O_(18)]^(8-)unit bridge d by fourCe^(3+)centers in the assistance of two H2PTCA-ligands.It is worth emphasizing that two H2PTCA-ligands simultaneously chelate with WⅥand CeⅢcenters.Furthermore,the composite of 1 and carboxyl-functionalized multi-walled carbon nanotube(CMCN)is utilized to modify glassy carbon electrode(GCE)to develop the 1@CMCN/GCE electrochemical sensor.The 1@CMCN/GCE electrochemical sensor displays potential sensing property toward detection of noradrenaline(NDL)with low limit of 2.10μmo1·L^(-1).This research will powerfully facilitate continuous investigations on rational design and in-depth development of structure-oriented rare-earth inserted phospho(Ⅲ)tungstates and tremendously promote their application developments in drug testing,clinical diagnosis,and food detection.
基金
financially supported by the National Natural Science Foundation of China(Grant Nos.21871077,22071042,22171070)
the Program for Innovation Teams in Science and Technology in Universities of Henan Province(Grant Nos.20IRTSTHN004)。
作者简介
Li-Juan Chen,ljchen@henu.edu.cn;Jun-Wei Zhao,zhaojunwei@henu.edu.cn。
