Visualized uranium rapid monitoring system based on self-enhanced electrochemiluminescence-imaging of amidoxime functionalized polymer nanoparticles  

作　　者：Ziyu Wang Hang Gao Peng Liu Xinqi Wu Qian Li Jing-Juan Xu Daoben Hua 

机构地区：[1]State Key Laboratory of Radiation Medicine and Protection,School for Radiological and Interdisciplinary Sciences(RAD-X),Soochow University,Suzhou 215123 China [2]State Key Laboratory of Analytical Chemistry for Life Science,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China [3]Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions,Soochow University,Suzhou 215123,China

出　　处：《Chinese Chemical Letters》2022年第7期3456-3460,共5页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos. U1867206, 21906115);State Key Laboratory of Analytical Chemistry for Life Science (No. SKLACLS2014);the China Postdoctoral Science Foundation (No. 2020T130456);the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)。

摘　　要：The development of uranyl ion detection technology has exhibited its significance in public security and environmental fields for the radioactivity and chemical toxicity of uranyl ion.The WHO standard of uranyl ion makes it necessary to develop highly sensitive uranyl rapid warning system in drinking water monitoring.Herein,a visualized rapid warning system for trace uranyl ion is carried out based on electrochemiluminescence(ECL) imaging technology to give an ultra-low limit of detection(LOD) and high selectivity.Amidoxime,a bi-functional group with both uranyl ion capturing and co-reactive functions,is modified on a conjugated polymer backbone with strong ECL signal to be prepared into three-in-one polymer nanoparticles(PNPs) with self-enhanced ECL property.The captured uranyl ion can enhance the ECL signal of PNPs via resonance energy transfer process to give the LOD as 0.5 ng/L,which is much lower than the known luminescent uranyl sensors.Furthermore,ECL imaging technology is introduced into realizing visualized uranyl rapid warning,and can be successfully applied on natural water samples.This study provides a novel strategy for uranyl rapid warning,and shows its potential meaning in public security and environmental fields.

关 键 词：Visualized monitoring ELECTROCHEMILUMINESCENCE AMIDOXIME URANIUM Public security 

分 类 号：TB383.1[一般工业技术—材料科学与工程] X84[环境科学与工程—环境工程]