Dual-Function Metal-Organic Framework as Efficient Turn-Off Sensor for Water and Unusual Turn-On Sensor for Ag+
authors Zhou, T; Liu, S; Guo, XM; Wang, Q; Fu, LS; Mi, SY; Gao, P; Su, QJ; Guo, HD
nationality International
journal CRYSTAL GROWTH & DESIGN
keywords REAL-TIME DETECTION; FLUORESCENT-PROBE; SOLVENTS; SILVER; MERCURY(II); BIOSENSOR; EMISSION; SYSTEM; IONS; GOLD
abstract Fluorescent sensors have been extensively employed in efficient energy utilization and environment protection. In this work, an amino-decorated metal-organic framework [Cd(3-NH2-pba)(2)](4).8DMF (3-NH2-Hpba = 3-amino-4-(pyridin-4-yl)benzoic acid) was synthesized as a dual-function fluorescent sensor through the distinctive interaction of amino moieties with analytes. This compound exhibits highly sensitive turn-off sensing of trace water in ethanol with a detection limit to 0.09%, much below the required values for hydrated ethyl alcohol fuel internationally. Meanwhile, it can also be developed as an unusual turn-on sensor for the probe of Ag+ in aqueous solution with the detection limit to 0.44 mu M, lower than the maximum concentration of Ag+ in drinking water according to the standard of the U.S. Environmental Protection Agency. It is the first example of MOF-based fluorescent sensor for simultaneously detecting trace water and Ag+.
publisher AMER CHEMICAL SOC
issn 1528-7483
isbn 1528-7505
year published 2021
volume 21
issue 9
beginning page 5108
ending page 5115
digital object identifier (doi) 10.1021/acs.cgd.1c00499
web of science category 8
subject category Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary
unique article identifier WOS:000693047300029
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