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- W2316156548 abstract "Coupling the rigid spacer 4,4′-bipyrazole (H2BPZ), in its anionic or neutral form, to different silver(I) salts allowed isolation of the novel coordination polymers [Ag2(BPZ)] (1) and [Ag(H2BPZ)(X)] (X = NO3, 2; ClO4, 3; BF4, 4; PF6, 5; CH3SO3, 6; CF3SO3, 7), which were fully characterized by infrared and emission spectroscopies, thermal analysis, and X-ray powder diffraction. The crystal structure of 1 consists of 2-D layers containing 1-D chains of Ag(I) ions bridged by exo-tetradentate bipyrazolato moieties. The crystal structures of the [Ag(H2BPZ)(X)] species 2–7 feature 1-D chains of [Ag(H2BPZ)] stoichiometry, along which the metal centers are bridged by exo-bidentate bipyrazolyl spacers. Contacts among adjacent chains are mediated by the counterions through nonbonding interactions involving the Ag(I) ions and the pyrazolyl N–H groups. Thermogravimetric analyses disclosed the good thermal stability of these materials, decomposing in the range 200–300 °C. Under UV irradiation at room temperature, all the species showed a yellow-green emission centered in the range 520–522 nm. When embedded into polyethylene disks, 1, 2, and 4–7 demonstrated their activity as topical antibacterial agents against suspensions of E. coli, P. aeruginosa, and S. aureus: complete reduction of the three bacterial strains was achieved in 24 h, reduction of S. aureus reaching ca. 90% in only 2 h. Biocidal action was expressed also by contact susceptibility tests." @default.
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- W2316156548 date "2012-08-24" @default.
- W2316156548 modified "2023-10-15" @default.
- W2316156548 title "Antibacterial Action of 4,4′-Bipyrazolyl-Based Silver(I) Coordination Polymers Embedded in PE Disks" @default.
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- W2316156548 doi "https://doi.org/10.1021/ic3011635" @default.
- W2316156548 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22921278" @default.
- W2316156548 hasPublicationYear "2012" @default.
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