title: Ligand effects on the structural dimensionality and antibacterial activities of silver-based coordination polymers.
abstract: Four Ag-based coordination polymers [Ag(Bim)] (1), [Ag2(NIPH)(HBim)] (2), [Ag6(4-NPTA)(Bim)4] (3) and [Ag2(3-NPTA)(bipy)0.5(H2O)] (4) (HBim = 1H-benzimidazole, bipy = 4,4'-bipyridyl, H2NIPH = 5-nitroisophthalic acid, H2NPTA = 3-/4-nitrophthalic acid) have been synthesized by hydrothermal reaction of Ag(i) salts with N-/O-donor ligands. Single-crystal X-ray diffraction indicated that these coordination polymers constructed from mononuclear or polynuclear silver building blocks exhibit three typical structure features from 1-D to 3-D frameworks. These compounds favour a slow release of Ag(+) ions leading to excellent and long-term antimicrobial activities, which is distinguished by their different topological structures, towards both Gram-negative bacteria, Escherichia coli (E. coli) and Gram-positive bacteria, Staphylococcus aureus (S. aureus). In addition, these compounds show good thermal stability and light stability under UV-vis and visible light, which are important characteristics for their further application in antibacterial agents.
authors.affiliation: State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China. junweiye@dlut.edu.cn ninggl@dlut.edu.cn.
authors.forename: Xinyi
authors.initials: X
authors.lastname: Lu
authors.forename: Junwei
authors.initials: J
authors.lastname: Ye
authors.forename: Yuan
authors.initials: Y
authors.lastname: Sun
authors.forename: Raji Feyisa
authors.initials: RF
authors.lastname: Bogale
authors.forename: Limei
authors.initials: L
authors.lastname: Zhao
authors.forename: Peng
authors.initials: P
authors.lastname: Tian
authors.forename: Guiling
authors.initials: G
authors.lastname: Ning
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology / Q000528:radiation effects; D001562:Benzimidazoles / Q000737:chemistry; D056831:Coordination Complexes / Q000737:chemistry / Q000494:pharmacology / Q000528:radiation effects; D004926:Escherichia coli / Q000187:drug effects* / Q000254:growth & development; D008024:Ligands; D008027:Light; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D010795:Phthalic Acids / Q000737:chemistry; D011108:Polymers / Q000737:chemistry / Q000494:pharmacology / Q000528:radiation effects; D012834:Silver / Q000737:chemistry / Q000494:pharmacology / Q000528:radiation effects; D013211:Staphylococcus aureus / Q000187:drug effects* / Q000254:growth & development
chemical_list: D000900:Anti-Bacterial Agents; D001562:Benzimidazoles; D056831:Coordination Complexes; D008024:Ligands; D010795:Phthalic Acids; D011108:Polymers; D012834:Silver; D015082:2,2'-Dipyridyl