Synthesis, Characterization, and Antibacterial Activities of High-Valence Silver Propamidine Nanoparticles

Lee, Jinran; Purushothaman, Baskaran; Zhao, Li; Kulsi, Goutam; Song, Joon Myong

doi:10.3390/app7070736

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…The electronic spectra of Co(II) complex showed multiple bands at 8890,17,249 and 28,000 cm -1 . These bands are ascribed to 4 T 1g (F) → 4 T 2g ; 4 T 1g (F) → 4 A 2g (F) and 4 T 1g (F) → 4 T 1g (P) transitions, respectively, consistent with the octahedral geometry. ʋ 2 / ʋ 1 ratio is found to be 1.94, which further supports octahedral geometry for Co(II) complex 31 .…”

Section: Electronic Spectral Studiesmentioning

confidence: 91%

Untitled

2019

IJPSR

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Metal (II) complexes of Co, Ni and Cu with Schiff base derived from 2, 4-Dihydroxy-5-acetylacetophenone and Aminothiophenol (DAAAP) were synthesized and characterized by elemental analysis, FTIR, I H NMR, electronic spectra, thermal analysis, magnetic susceptibility and conductometric measurements. On the basis of these studies, a six coordinated octahedral geometry has been proposed for all the complexes. The Schiff base and its complexes were tested for biological activity against various types of Grampositive (Bacillus subtilis ATTC 6051 and S. pyogones ATTC 12600) and Gram negative bacteria (Escherichia coli ATTC 11775 and Proteus vulgaris ATTC 13315) and Fusarium solani Martius and Aspergillus niger Fungus. It has been found that metal complexes are found to have sensitivity for inhibition of Gram-positive more than Gram-negative bacteria. All the metal complexes show antifungal activity and it is clear from the data that the complexes exhibit more antifungal activity compared to the parent ligand. INTRODUCTION: Schiff bases and their bioactive complexes have been studied extensively over the past decade 1, 2. Schiff bases are useful chelators because of their ease of preparation, structural varieties, varied denticities and subtle steric and electronic control on their framework. Many Schiff base ligands have been reported by their potential applications in industry, pharma, drug, and catalysis. Metal complexes of Schiff base ligands have shown a wide variety of applications in the medicinal 3, 4 and biological fields 5, 6 such as antibacterial, anti-proliferative, antimalarial, anticancer 7-9 , antifungal, anti-inflammatory, antiviral and antipyretic properties 10 .

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Section: Electronic Spectral Studiesmentioning

confidence: 91%

Untitled

2019

IJPSR

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“…Therefore, the particle size of CD can be determined based on the distribution of the absorption spectrum of silver nanoparticles. Based on the literature, the absorption spectrum ranges from 250-280 nm with emission ranging from 400-470 nm the particle size of the synthesized CD ranges from 1-10 nm (Lee et al, 2017;Singh et al, 2013).…”

Section: Coatings Applicationmentioning

confidence: 99%

Carbon Dots-based Antifungal Coating Film Against Pathogens Colletotrichum sp. for Active Coating Application of Mango

Safitri,

Sugiarti,

Darmawan

2024

Sci. Technol. Indones

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Mangos are one of horticultural products that are leading the Indonesian agricultural industry. Simple post-harvest handling leads to high damage. The most common causes is anthracnose disease caused by Colletotrichum sp. Therefore, it’s necessary to modify the existing methods in postharvest handling such as coating. Adding active agents such as carbon dot (CD) in coating material to prevent anthracnose from growing and shorten the shelf life. This study aims to investigate the applicability and antifungal properties of CD as a composite coating. CDs were synthesized using chitosan as the carbon source in a one-pot hydrothermal technique. The CDs have blue-emitting luminescence caused by the functional group at the surface of CD. The CDs were used to prepare chitosan/pectin (Chi/Pec)-based composite coatings. The addition of CDs increased the viscosity and density of composites, increased the blue-emitting luminescence, and showed potential antioxidant activity. The CDs and composite coatings exhibited high antifungal activity against Colletotrichum sp. by agar well diffusion method and were classified as very strong antifungal agents. The chitosan/pectin/CDs-coating effectively reduced the growth of black spots on the surface of mangos and increased the fruit shelf life of the fruit by 24 days. The CDs are evidently safe, affordable, and value-added nanomaterials that can be used to prepare active packaging applications.

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“…For prevention of this serious medical problem, it is necessary to develop some new antibacterial agents or to expand the bioactivity of the previously used drugs [19,20]. Metal-based antibacterial compounds seem to be a promising research for designing a novel therapeutic methodology for new antibiotic drugs to control and prevent the growth of bacterial strains [21,22].…”

Section: Introductionmentioning

confidence: 99%

Cobalt (II) Complexes with Schiff Base Ligands Derived from Terephthalaldehyde and ortho-Substituted Anilines: Synthesis, Characterization and Antibacterial Activity

et al. 2018

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In this study, N-propyl-benzoguanamine-SO 3 H magnetic nanoparticles (MNPs) were used as a catalyst for the synthesis of new Schiff base ligands from condensation reaction of terephthalaldehyde and ortho-aniline derivatives. The bioactive ligands and their cobalt (II) complexes were characterized with nuclear magnetic resonance ( 1 H-NMR), Fourier-transform infrared spectroscopy (FT-IR), ultraviolet-visible (UV-Visible), mass spectroscopy studies and molar conductance. The antibacterial activity of ligands and their metal complexes were screened using disc diffusion and broth dilution methods against Escherichia coli, Serratia marcescens, Pseudomonas aeruginosa (gram negative bacteria), Bacillus Subtilis and Staphylococcus aureus (gram positive bacteria). The ligands with hydroxyl group showed better biological activity when compared to other ligands. The results showed that the metal complexes have much higher antibacterial activity compare to the parent ligands. It was found that the CoL 3 complex was more effective than other metal complexes used against all types of bacteria tested and it was more effective against Pseudomonas aeruginosa with diameter inhibition zone of 17 mm and minimal inhibitory concentration value of 0.15 mg/mL.

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Synthesis, Characterization, and Antibacterial Activities of High-Valence Silver Propamidine Nanoparticles

Cited by 7 publications

References 27 publications

Untitled

Untitled

Carbon Dots-based Antifungal Coating Film Against Pathogens Colletotrichum sp. for Active Coating Application of Mango

Cobalt (II) Complexes with Schiff Base Ligands Derived from Terephthalaldehyde and ortho-Substituted Anilines: Synthesis, Characterization and Antibacterial Activity

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