Laser receptive polyelectrolyte thin films doped with biosynthesized silver nanoparticles for antibacterial coatings and drug delivery applications

Sripriya, Jaganathan; Sundaramurthy, Anandhakumar; Achiraman, Shanmugam; Antony, Jacob Joe; Siva, Durairaj; Raichur, Ashok M.

doi:10.1016/j.ijpharm.2013.09.036

Cited by 43 publications

(17 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Hence there is an urgent need for a commercially viable, economical, rapid, and environmentally friendly route for the detection of Al(III). The optical, chemical, mechanical and electrochemical properties of noble metal nanoparticles make them an excellent resource for varied applications in diverse fields - anticancer 20 , cosmetics 21 , coating 22 , and biocatalysis 3 , 4 . Recently, colorimetric assays and nanoprobes such as paper-based analytical device (PAD), quantum-dots-based photoelectrochemical immune assays, magnetic bead-based reverse colorimetric sensors, MnO 2 nanoflakes with enzyme cascade amplification for colorimetric immunoassay, Fenton reaction-based colorimetric immunoassay for sensitive detection of brevetoxin B have been synthesized for the colorimetric detection of metal ions in aqueous system 23 – 28 .…”

Section: Introductionmentioning

confidence: 99%

Mentha-Stabilized Silver Nanoparticles for High-Performance Colorimetric Detection of Al(III) in Aqueous Systems

Sharma

Dhillon

Kumar

2018

Sci Rep

View full text Add to dashboard Cite

The present paper reports a facile and selective colorimetric method for the detection of potential environmental and health hazardous metal ions using green synthesized silver nanoparticles (AgNPs). Here the organic functional groups present in the plant extract (Mentha arvensis) are used as reductants and stabilizers in the synthesis of AgNPs. They also provide a suitable binding site to the (Al(III)) analyte in the detection mechanism. The leaf extract of Mentha arvensis was used to synthesize AgNPs at room-temperature and at 80 °C. The AgNPs synthesized at 80 °C exhibit excellent selective colorimetric detection of Al(III). The as-synthesized AgNPs have been characterized, and the synthesis, stabilization of NPs and detection mechanism has also been illustrated by using UV-vis, XPS, FTIR, TEM, EDX, SEM, AAS, and TGA analytical tools and techniques. The selectivity of detection probe was supported by the reaction between probe and metal ions followed first-order kinetics having the highest value of the regression coefficient (R2 = 0.99) for Al(III) and the analysis of thermodynamic parameters. The prepared sensor showed a lower limit of detection (LOD) of 1 nM (S/N = 3.2) in real water samples. The proposed method can be successfully utilized for the detection of Al(III) from both drinking and real water samples at the nanomolar level.

show abstract

Section: Introductionmentioning

confidence: 99%

Mentha-Stabilized Silver Nanoparticles for High-Performance Colorimetric Detection of Al(III) in Aqueous Systems

Sharma

Dhillon

Kumar

2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…34,35 This feature of TiO 2 was indeed reflected by the laser-generated novel compound Ag-TiO 2 NPs used in this study. The red shift of the absorption curve for the laser Ag-TiO 2 NPs results in the reduction of the band gap energy and also the recombination rate, and hence, enhanced photocatalytic and antibacterial activities from the TiO 2 NPs.…”

mentioning

confidence: 54%

Antibacterial mechanisms of a novel type picosecond laser-generated silver-titanium nanoparticles and their toxicity to human cells

Korshed¹,

Li²,

Li³

et al. 2017

IJN

View full text Add to dashboard Cite

In this study, we explored the antibacterial mechanisms for a novel type of Ag-TiO 2 compound nanoparticles (NPs) produced from an Ag-TiO 2 alloy using a picosecond laser and evaluated the toxicity of the Ag-TiO 2 NPs to a range of human cell types. Transmission electron microscopy was used to determine the morphology, shapes, and size distribution of the laser-generated Ag-TiO 2 NPs. UV-visible spectrometer was used to confirm the shift of light absorbance of the NPs toward visible light wavelength. Results showed that the laser-generated Ag-TiO 2 NPs had significant antibacterial activities against both Gram-negative and Gram-positive bacterial strains, including Escherichia coli, Pseudomonas aeruginosa , and the methicillin-resistant Staphylococcus aureus . Increased level of reactive oxygen species was produced by E. coli after exposure to the Ag-TiO 2 NPs, which was accompanied with lipid peroxidation, glutathione depletion, disintegration of cell membrane and protein leakage, leading to the cell death. Five types of human cells originated from lung (A549), liver (HePG2), kidney (HEK293), endothelium cells (human coronary artery endothelial cells [hCAECs]), and skin (human dermal fibroblast cells [HDFc]) were used to evaluate the cytotoxicity of the laser-generated Ag-TiO 2 NPs. A weak but statistically significant decrease in cell proliferation was observed for hCAECs, A549 and HDFc cells when co-cultured with 2.5 µg/mL or 20 µg/mL of the laser-generated Ag-TiO 2 NPs for 48 hours. However, this effect was no longer apparent when a higher concentration of NPs (20 µg/mL) was used after 72 hours of co-culture with human cells, suggesting a possible adaptive process in the cells had occurred. We conclude that picosecond laser-generated Ag-TiO 2 NPs have a broad spectrum of antibacterial effect, including against the drug-resistant strain, with multiple underlying molecular mechanisms and low human cell toxicity. The antimicrobial properties of the new type of picoseconds laser-generated Ag-TiO 2 compound NPs could have potential biomedical applications.

show abstract

“…There are articles on hybrid polyelectrolyte‐Ag films. However, they are either about direct assembly of Ag nanoparticles in the LbL films; or on later immersion of the polyelectrolyte multilayers in a silver(I) solution precursor followed by different reduction methods . By immersing the polyelectrolyte multilayers containing PAH/PAA (PAA denotes poly‐acrylic acid) in a silver acetate aqueous solution, followed by reduction with

{normalH}_{2}^{26}

(or dimethylamine borane, DMAB), or ambient light (or UV light), Ag nanoparticles without specific morphology forming in the films are documented.…”

Section: Resultsmentioning

confidence: 99%

Assembly and antibacterial activity of horizontally oriented silver nanoplates

Zhang

Kang

Xie

2015

J of Applied Polymer Sci

View full text Add to dashboard Cite

This work describes a strategy of assembling horizontally oriented Ag nanoplates (AgNPTs) with PSS-Ag as the precursor of silver by the layer-by-layer (LbL) technique on planar substrates. These AgNPTs have a lateral dimension of 20-80 nm and a thickness of 9-12 nm. A corresponding formation mechanism of these AgNPTs is discussed considering the orientation of the polyelectrolytes molecules, as well as their confinement effect on the diffusion of Ag nanoparticles. The exposed horizontal surfaces of the AgNPTs correspond to low free energy; they show an active antimicrobial activity. No Staphylococcus aureus colonies appear on the nutrient agar medium inoculated and incubated with S. aureus solutions treated by LbL films containing AgNPTs. The horizontally oriented AgNPTs by the described strategy in this work not only provides a novel method for controlled assembly of AgNPTs, but also provides insight in the antimicrobial behavior of nanoplate surfaces with low free energy.

show abstract

Laser receptive polyelectrolyte thin films doped with biosynthesized silver nanoparticles for antibacterial coatings and drug delivery applications

Cited by 43 publications

References 33 publications

Mentha-Stabilized Silver Nanoparticles for High-Performance Colorimetric Detection of Al(III) in Aqueous Systems

Mentha-Stabilized Silver Nanoparticles for High-Performance Colorimetric Detection of Al(III) in Aqueous Systems

Antibacterial mechanisms of a novel type picosecond laser-generated silver-titanium nanoparticles and their toxicity to human cells

Assembly and antibacterial activity of horizontally oriented silver nanoplates

Contact Info

Product

Resources

About