A highly efficient coordination polymer for selective trapping and sensing of perrhenate/pertechnetate
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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 Kd (5.8 × 105 mL g–1) as well as outstanding selectivity in 500 times excess of CO32– or PO43– 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.
Li , C-P , Zhou , H , Chen , J , Wang , J-J , Du , M & Zhou , W 2020 , ' A highly efficient coordination polymer for selective trapping and sensing of perrhenate/pertechnetate ' , ACS Applied Materials & Interfaces , vol. 12 , no. 13 , pp. 15246-15254 . https://doi.org/10.1021/acsami.0c00775
ACS Applied Materials & Interfaces
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DescriptionThis work was financially supported by the National Natural Science Foundation of China (21771139), Tianjin Natural Science Foundation (17JCYBJC22800), and the Program for Innovative Research Team in University of Tianjin (TD13-5074).
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