Journal
POLYHEDRON
Volume 188, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2020.114684
Keywords
Silver-based coordination polymer; Antimicrobial property; Ag+ ion; Escherichia coli
Categories
Funding
- Beijing Natural Science Foundation [8202016]
- Great Wall Scholars Training Program Project of Beijing Municipality Universities [CITTCD20180323]
- Project of Construction of Innovation Teams and Teacher Career Development for Universities and Colleges Under Beijing Municipality [IDHT20170508]
- Beijing Talent Project [2019A22]
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Two silver-based coordination polymers, [Ag-2(O-IPA)(H2O)]center dot(H3O) (CP1) and [Ag-2(bpe)(2)(Cl)(2)] (CP2), were facilely synthesized from AgNO3 and 5-hydroxyisophthalic acid (HO-H(2)IPA)/1,1'-(1,4-phenylene-bis (methylene))-bis(pyridine-3-carboxylic acid) (1pbb3ca) and 1,2-di(4-pyridyl)ethylene (bpe) by the slow evaporation method at room temperature. These two coordination polymers exhibited excellent and long-term antibacterial properties toward Gram-negative bacteria named Escherichia coli (E. coli), in which CP1 achieved the lowest minimum inhibitory concentration (MIC) of 5 ppm and largest inhibition zone of 11.12 mm due to its fastest Ag+ release rate and highest equilibrium concentration. These coordination polymers could destroy the membrane of the bacteria, leading to the death of cells. The stable and slow release of Ag+ ions in aqueous solutions for 5 d ensure the potentially further application in the purification of polluted water or medical purpose. (C) 2020 Elsevier Ltd. All rights reserved.
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