Water-stable Cd(ii)/Zn(ii) coordination polymers as recyclable luminescent sensors for detecting hippuric acid in simulated urine for indexing toluene exposure with high selectivity, sensitivity and fast response
| Autor: | Lei Zhang, Zhiliang Liu, Yan-Qin Wang, Peng-Yu Liu, Wei-Zhe Chen, Jiao-Jiao Zhao |
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| Rok vydání: | 2020 |
| Předmět: |
Models
Molecular Luminescence Time Factors Polymers Molecular Conformation Urinalysis Inorganic Chemistry chemistry.chemical_compound Coordination Complexes Limit of Detection Pyridine Humans Tetrazole Hydrogen bond Hippurates Hippuric acid Water Hydrogen Bonding Toluene Zinc chemistry Chemical stability Terpyridine Nuclear chemistry Cadmium |
| Zdroj: | Dalton transactions (Cambridge, England : 2003). 50(2) |
| ISSN: | 1477-9234 |
| Popis: | Three novel Cd(ii)/Zn(ii) coordination polymers (CPs), namely [Cd(L)(BPDC)0.5H2O]·0.5H2O (1), [Zn2(L)2(BPDC)]·2H2O (2) and [Cd2(L)(BTC)H2O]·3H2O (3) (L = 4-(tetrazol-5-yl)phenyl-4,2':6',4''-terpyridine, H2BPDC = 4,4'-biphenyldicarboxylic acid, and H3BTC = 1,3,5-benzenetricarboxylic acid), have been successfully synthesized and characterized. CP 1 and CP 2 display new two-dimensional double-layered honeycomb frameworks containing uncoordinated nitrogen atoms from pyridine and tetrazole rings, which can easily form hydrogen bonds with various analytes. CP 3 exhibits a 3D framework also with uncoordinated nitrogen atoms from pyridine and tetrazole rings. The fluorescence explorations indicate that CPs 1-3 exhibit strong blue luminescence and excellent chemical stability under a relatively wide range of pH conditions. It is worth noting that CPs 1-3 can quantitatively detect hippuric acid (HA), which is a metabolite of toluene in human urine, with high selectivity, sensitivity, fast response and relatively low detection limits. Moreover, the sensing mechanism of CPs 1-3 for HA can mainly be ascribed to fluorescence resonance energy transfer (FRET). CPs 1-3 could be ideal candidates as HA sensors in human urine samples for practical applications. Notably, to the best of our knowledge, we report for the first time Cd(ii)/Zn(ii)-based luminescent sensors for detecting HA in simulated urine. |
| Databáze: | OpenAIRE |
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