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Legler, A. V.; Kazachenko, Аleksandr S.; Kazbanov, V. I.; Peryanova, Olga V.; Veselova, O.F.

doi:10.1023/a:1014098810078

Cited by 25 publications

(12 citation statements)

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“…Chelation, which has been reported to reduce the polarity of the metal ion by partial sharing of its positive charge with the donor group of ligands, also supports this theory [8,9]. Promising antimicrobial activities of some amino acids chelates have been reported, including those of histidine [1,10], arginine and glutamic acid [11]. However, there is dearth of information on coordination compounds of phenylalanine.…”

Section: Introductionmentioning

confidence: 78%

Synthesis, characterization and antimicrobial activities of some metal(II) amino acids’ complexes

Aiyelabola¹,

Ojo²,

Adebajo³

et al. 2012

ABC

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Metal(II) coordination compounds of glycine and phenylalanine were synthesized and characterized using infrared and electronic spectroscopic, and magnetic susceptibility measurements. The complexes were tested for antimicrobial activity against Bacillus subtilis, Staphylococcus aureus, Methicillin Resistant Staphylococcus aureus (MRSA), Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris and Candida albicans. The stoichiometric reaction between the metal (II) ions and ligands in molar ratio M:L (1:3) [where M = Mn, Co, Ni, Cu and Cd; L= glycine; phenylalanine] resulted in the formation of five-coordinate square pyramidal dinuclear geometry for both copper complexes and six-coordinate octahedral geometry for the other complexes. The spectroscopic and magnetic moment data suggested that the ligands coordinated via both their amino and carboxylate ion moieties. The complexes demonstrated better activities against one or more of the tested microbes than acriflavine, the standard drug used.

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Section: Introductionmentioning

confidence: 78%

Synthesis, characterization and antimicrobial activities of some metal(II) amino acids’ complexes

Aiyelabola¹,

Ojo²,

Adebajo³

et al. 2012

ABC

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“…Aqueous solution of arginine-silver complexes was prepared as reported earlier. 25 Five sets of silver-arginine complexes (aq.) were synthesized having the molar concentrations of AgNO 3 of 5, 10, 20, 25, and 75 mM such that the molar ratio of silver : arginine was kept constant at 5 : 2.…”

Section: Synthesis Of Agnp-zno Hybrid Nanorodsmentioning

confidence: 99%

Arginine-assisted immobilization of silver nanoparticles on ZnO nanorods: an enhanced and reusable antibacterial substrate without human cell cytotoxicity

2015

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Silver-based hybrid nanomaterials are gaining interest as potential alternatives for conventional antimicrobial agents. Herein, we present a simple, facile and eco-friendly approach for the deposition of silver nanoparticles (AgNPs) on ZnO nanorods, which act as a nanoreactor for in situ synthesis and as an immobilizing template in the presence of arginine. The presence of arginine enhanced the stability of ZnO deposition on the glass substrate by hindering the dissolution of zinc under alkaline conditions. Various Ag/ZnO hybrid nanorod (HNR) samples were screened to obtain a high amount of silver immobilization on the ZnO substrate. Ag/ZnO HNRs displayed potent antibacterial ability and could achieve 100% kill for both Escherichia coli and Bacillus subtilis strains under various test conditions. The hybrid material mediated its dual mode of antibacterial action through direct contact-killing and release of silver ions/nanoparticles and showed superior bactericidal performance compared to pure ZnO nanorods and colloidal AgNPs. No significant decline in antibacterial efficacy was observed even after the same substrate was repeatedly reused multiple times. Interestingly, the amount of Ag and Zn release was much below their maximal limit in drinking water, thus preventing potential health hazards. Immobilized AgNPs showed no cytotoxic effects on the human hepatocarcinoma cell line (HepG2). Moreover, treating cells with the antibacterial substrate for 24 hours did not lead to significant generation of reactive oxygen species (ROS). The good biocompatibility and bactericidal efficacy would thus make it feasible to utilize this immobilization strategy for preparing new-generation antibacterial coatings.

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“…2 shows some peaks for hydrocarbon (C-H) below 3000 cm −1 and two peaks for amino group above 3000 cm −1 (ν as (NH 2 ) = 3288 cm −1 , ν s (NH 2 ) = 3362 cm −1 ). After silver nitrate is added to BAm, two peaks related to the amino group shift to lower wavenumber (ν as (NH 2 ) = 3165 cm −1 , ν s (NH 2 ) = 3261 cm −1 ) due to electron donation from the amino group to the silver atom, which decreased the electron density of the amino group and resulted in lower wavenumber on the FT-IR spectrum [23][24][25][26]. Therefore, it could be summarized that the lattice of silver nitrate was dissociated by coordinative interaction with BAm and then dissolved into hydrocarbon solvent, as shown in Fig.…”

Section: Dissociation Of Silver Nitrate In Hydrocarbon Solventmentioning

confidence: 99%

Direct synthesis and bonding origins of monolayer-protected silver nanocrystals from silver nitrate through in situ ligand exchange

Lee

Shim

et al. 2006

Journal of Colloid and Interface Science

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Untitled

Cited by 25 publications

References 0 publications

Synthesis, characterization and antimicrobial activities of some metal(II) amino acids’ complexes

Synthesis, characterization and antimicrobial activities of some metal(II) amino acids’ complexes

Arginine-assisted immobilization of silver nanoparticles on ZnO nanorods: an enhanced and reusable antibacterial substrate without human cell cytotoxicity

Direct synthesis and bonding origins of monolayer-protected silver nanocrystals from silver nitrate through in situ ligand exchange

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