Journal
COORDINATION CHEMISTRY REVIEWS
Volume 415, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2020.213299
Keywords
Luminescent metal-organic frameworks (LMOFs); Metal-ion detection; Photoluminescent (PL) methods; Signal transduction; Cation sensing
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Owing to their porosity and enriched host-guest chemistry, metal-organic frameworks (MOFs) applied extensively in detection of large variety of hazardous chemicals using different instrumental methods, especially metal ions by photoluminescence methods. Application of luminescent MOFs (LMOFs) in detection of metal ions demonstrates successes in this area along with some challenges. Contrary to versatile application of LMOFs as metal-ion sensor, there is not any review in this area. Also, there are some inconsistencies in this area needing right solution. Considering such vacancies, we tried to identify the successes and challenges of using MOFs as metal ion sensor. To this aim, for the first time in this review we present structure-signal and mechanism-response approaches through communicating between LMOFs structural features and their signal transduction and detection mechanism. In structure-signal approach we discuss how a LMOF with special organic linker and inorganic nodes can generate special kind of luminescence signal. In mechanism-response we explain that how a detection mechanism can produce selective and sensitive response toward special metal ion. Then, we address about some essential concepts in photoluminescence (PL) methods to avoid any misunderstandings. However, our goal is not giving a full explanation about PL principles because other reviews did this job very well. Finally, we discussed about sensing parameters and characterization techniques and offer a generalized updated roadmap for detection of metal ions. (C) 2020 Elsevier B.V. All rights reserved.
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