Journal
JOURNAL OF COORDINATION CHEMISTRY
Volume 71, Issue 20, Pages 3266-3276Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00958972.2018.1510122
Keywords
Silver supramolecular network; crystal structure; antimicrobial activity; thiophene-2,5-dicarboxylate; benzimidazole
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Funding
- National Natural Science Foundation of China [U1607101]
- Natural Science Foundation of Liaoning Province [2015020199]
- Fundamental Research Funds for the Central Universities of China [DUT17LK44]
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A silver(I) supramolecular network Ag(BIm)(2)(HTDC) (1) was assembled from thiophene-2,5-dicarboxylic acid (H2TDC) and benzimidazole (BIm) ligands and characterized by single-crystal X-ray diffraction, elemental analysis, FT-IR, and thermal gravimetric analysis. Complex 1 possesses a two-dimensional structure with a hydrogen-bonded grid network, in which the adjacent [Ag(BIm)(2)](+) cations and (HTDC)(-) are bridged via N-H center dot center dot center dot O hydrogen bonds forming undulating ribbons. The antibacterial properties of 1 were investigated by determining the minimal inhibitory concentration (MIC), the growth curve of bacteria and zone inhibition value assays against Gram-negative bacterium, Escherichia coli, and Gram-positive bacterium, Staphylococcus aureus. The MIC of 1 against E. coli and S. aureus are 15-20 ppm and 20-30 ppm which showed that 1 has higher antibacterial activity than commercial silver nanoparticles. The mechanism of antibacterial activity of 1 was also discussed.
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