title: Fluorogenic Thorium Sensors Based on 2,6-Pyridinedicarboxylic Acid-Substituted Tetraphenylethenes with Aggregation-Induced Emission Characteristics.
abstract: A novel fluorescent sensor based on tetraphenylethene (TPE) modified with 2,6-pyridinedicarboxylic acid (PDA) that shows aggregation-induced emission (AIE) characteristics for thorium recognition with remarkable fluoresence enhancement response has been synthesized. This sensor is capable of visually distinguishing Th(4+) among lanthanides, transition metals, and alkali metals under UV light. Th(4+) can be detected by the naked eye at ppb levels owing to the AIE phenomenon. The sensor showed high selectivity for Th(4+) compared to all other metals tested, and this recognition displayed good anti-interference qualities. This study represents the first application of a AIE fluorescence sensor in actinide metal recognition and it has potential applications in environmental systems for thorium ion detection.
authors.affiliation: China Academy of Engineering Physics, Institute of Nuclear Physics and Chemistry, Mianyang, 621900, Sichuan Province, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wen
authors.affiliation: China Academy of Engineering Physics, Institute of Nuclear Physics and Chemistry, Mianyang, 621900, Sichuan Province, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Dong
authors.affiliation: China Academy of Engineering Physics, Institute of Nuclear Physics and Chemistry, Mianyang, 621900, Sichuan Province, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Hu
authors.affiliation: Xihua University, School of Science, Chengdu, Sichuan, 610065, China. weiyili@mail.xhu.edu.cn.
authors.forename: Weiyi
authors.initials: W
authors.lastname: Li
authors.affiliation: Chongqing University of Technology, School of Chemical Engineering, Chongqing, 400054, China. lishuo@cqut.edu.cn.
authors.forename: Shuo
authors.initials: S
authors.lastname: Li
authors.affiliation: China Academy of Engineering Physics, Institute of Nuclear Physics and Chemistry, Mianyang, 621900, Sichuan Province, China. xlwang@caep.cn.
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Wang
keywords: aggregation-induced emission; dft; fluorescence; sensors; thorium recognition