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Scano A, Mereu E, Cabras V, Mannias G, Garau A, Pilloni M, Orrù G, Scano A, Ennas G. Green Preparation of Antimicrobial 1D-Coordination Polymers: [Zn(4,4'-bipy)Cl2]∞ and [Zn(4,4'-bipy)2(OAc)2]∞ by Ultrasonication of Zn(II) Salts and 4,4'-Bipyridine. Molecules 2022; 27:molecules27196677. [PMID: 36235214 PMCID: PMC9572912 DOI: 10.3390/molecules27196677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/17/2022] [Accepted: 09/28/2022] [Indexed: 11/24/2022] Open
Abstract
We report on the green preparation of one-dimensional metal coordination polymers by sonochemical approach. The spacer ligand 4,4'-bipyridine was ultrasonicated with chloride or acetate zinc salts to obtain [Zn(4,4'-bipy)Cl2]∞ and [Zn(4,4'-bipy)2(OAc)2]∞, respectively. Benign solvents such as ethanol and water were selected as reaction media, and the synthesis took place in a few minutes-a very short time compared to conventional methods where some days' synthesis is required. X-ray powder diffraction, Fourier transform infrared spectroscopy, thermal analysis (thermogravimetric and differential scanning calorimetry), and CHN techniques investigated the influence of using different reaction solvents on the chemical, structural, and thermal properties of the final products. The 1D [Zn(4,4'-bipy)Cl2]∞ and [Zn(4,4'-bipy)2(OAc)2]∞ polymers, in agreement with the structures reported in the literature, were obtained in the form of nanocrystals with an average crystal size around 100 nm. As a proof of concept, a set of Gram-positive (Staphylococcus aureus) and Gram-negative bacteria (Klebsiella pneumoniae), and three yeast strains (Candida albicans, Candida krusei, Candida glabrata) were tested to evaluate the antimicrobial activity of the coordination polymers, following the Kirby-Bauer procedure and microplate dilution method. Thus, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), and minimal biofilm inhibitory concentration (MBIC) were evaluated. Except for Candida krusei, the compounds showed an appreciable antimicrobial and antibiofilm activity against these strains grown in the liquid medium.
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Affiliation(s)
- Alessandra Scano
- Department of Chemical and Geological Sciences, University of Cagliari and INSTM Unit, SS 554 Bivio per Sestu, 09042 Monserrato, CA, Italy
- Correspondence: or (A.S.); (G.E.)
| | - Elisabetta Mereu
- Department of Chemical and Geological Sciences, University of Cagliari and INSTM Unit, SS 554 Bivio per Sestu, 09042 Monserrato, CA, Italy
| | - Valentina Cabras
- Department of Chemical and Geological Sciences, University of Cagliari and INSTM Unit, SS 554 Bivio per Sestu, 09042 Monserrato, CA, Italy
| | - Giada Mannias
- Department of Chemical and Geological Sciences, University of Cagliari and INSTM Unit, SS 554 Bivio per Sestu, 09042 Monserrato, CA, Italy
| | - Alessandra Garau
- Department of Chemical and Geological Sciences, University of Cagliari and INSTM Unit, SS 554 Bivio per Sestu, 09042 Monserrato, CA, Italy
| | - Martina Pilloni
- Department of Chemical and Geological Sciences, University of Cagliari and INSTM Unit, SS 554 Bivio per Sestu, 09042 Monserrato, CA, Italy
| | - Germano Orrù
- Department of Surgical Sciences, Molecular Biology Service, University of Cagliari, 09124 Cagliari, Italy
| | - Alessandra Scano
- Department of Surgical Sciences, Molecular Biology Service, University of Cagliari, 09124 Cagliari, Italy
| | - Guido Ennas
- Department of Chemical and Geological Sciences, University of Cagliari and INSTM Unit, SS 554 Bivio per Sestu, 09042 Monserrato, CA, Italy
- Correspondence: or (A.S.); (G.E.)
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Yan B. Luminescence response mode and chemical sensing mechanism for lanthanide-functionalized metal–organic framework hybrids. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01153c] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This comprehensive review systematically summarizes the luminescence response mode and chemical sensing mechanism for lanthanide-functionalized MOF hybrids (abbreviated as LnFMOFH).
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Affiliation(s)
- Bing Yan
- School of Chemical Science and Engineering
- Tongji University
- Shanghai 200092
- China
- School of Materials Science and Engineering
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