A Highly Efficient Coordination Polymer for Selective Trapping and Sensing of Perrhenate/Pertechnetate

• Published in: ACS applied materials & interfaces Vol. 12; no. 13; pp. 15246 - 15254
• Main Authors: Li, Cheng-Peng, Zhou, Hang, Chen, Jing, Wang, Jia-Jun, Du, Miao, Zhou, Wuzong
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 01.04.2020
• Subjects: aromatic compounds; carbonates; coordination polymers; density functional theory; fluorescence; ligands; phosphates; silver; sorption; ultraviolet radiation; coordination polymers; perrhenate/pertechnetate; anion exchange; test paper; fluorescence sensor
• ISSN: 1944-8244; 1944-8252; 1944-8252
• DOI: 10.1021/acsami.0c00775

A porous cationic Ag­(I) coordination polymer, [Ag­(1,2,4,5-p4b)]­(SbF6) (TJNU-302) with the ligand 1,2,4,5-p4b (1,2,4,5-tetra­(pyridin-4-yl)­benzene), is reported that shows high sorption capacity (211 mg g–1) and distribution coefficient K d (5.8 × 105 mL g–1) as well as outstanding selectivity in 500 times excess of CO3 2– or PO4 3– anion for perrhenate removal. TJNU-302 can act as a crystalline turn-off sensor for perrhenate upon UV radiation. In this way, a test paper strip for sensing ReO4 – could be produced. In water solution, TJNU-302 shows an efficient fluorescence quenching response to ReO4 – ion, with the highest quenching percentage (86%) among all reported ReO4 – sensors. These results could be elucidated by the bonding properties of single-crystal structures of TJNU-302 before and after perrhenate sorption, as well as density functional theory (DFT) calculations.