Optical properties and antimicrobial effects of silver nanoparticles synthesized by femtosecond laser photoreduction

Lopes, Carla Regina Borges; Cordeiro, Thiago da Silva; Franzolin, Márcia Regina; Vieira, Nilson D.; Samad, Ricardo Elgul; Courrol, Lilia Coronato

doi:10.1016/j.optlastec.2018.01.044

Cited by 26 publications

(17 citation statements)

References 33 publications

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“…Single and broad LSPR peak indicates that Ag NPs have spherical shapes with a broad size distribution and sizes up to 100 nm [17]. LSPR intensity rises with higher Ag(I) salt concentrations, which implies that the amount of Ag NPs embedded inside the polymer increases [18]. Fig.…”

Section: Resultsmentioning

confidence: 92%

Selective Electroless Copper Deposition by Using Photolithographic Polymer/Ag Nanocomposite

Ryspayeva

Jones

Esfahani

et al. 2019

IEEE Trans. Electron Devices

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Section: Resultsmentioning

confidence: 92%

Selective Electroless Copper Deposition by Using Photolithographic Polymer/Ag Nanocomposite

Ryspayeva

Jones

Esfahani

et al. 2019

IEEE Trans. Electron Devices

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“…Recent studies evidenced the potential use of AgNPs as vaccine and drug carriers for specific and selective cell or tissue targeting [ 109 ]. In addition to the great optical properties of AgNPs (governed by specific surface plasmon resonance and localized surface plasmon resonance) [ 110 , 111 , 112 ], the recent improvements in AgNP biocompatibility and stability via surface modification strongly recommend nanostructured systems based on silver as specific, selective, and versatile candidates for drug-delivery applications [ 113 ].…”

Section: Silver Nanoparticles For Drug-delivery Systemsmentioning

confidence: 99%

Biomedical Applications of Silver Nanoparticles: An Up-to-Date Overview

et al. 2018

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During the past few years, silver nanoparticles (AgNPs) became one of the most investigated and explored nanotechnology-derived nanostructures, given the fact that nanosilver-based materials proved to have interesting, challenging, and promising characteristics suitable for various biomedical applications. Among modern biomedical potential of AgNPs, tremendous interest is oriented toward the therapeutically enhanced personalized healthcare practice. AgNPs proved to have genuine features and impressive potential for the development of novel antimicrobial agents, drug-delivery formulations, detection and diagnosis platforms, biomaterial and medical device coatings, tissue restoration and regeneration materials, complex healthcare condition strategies, and performance-enhanced therapeutic alternatives. Given the impressive biomedical-related potential applications of AgNPs, impressive efforts were undertaken on understanding the intricate mechanisms of their biological interactions and possible toxic effects. Within this review, we focused on the latest data regarding the biomedical use of AgNP-based nanostructures, including aspects related to their potential toxicity, unique physiochemical properties, and biofunctional behaviors, discussing herein the intrinsic anti-inflammatory, antibacterial, antiviral, and antifungal activities of silver-based nanostructures.

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“…For both 2-ME concentrations, the absorbance intensity increases with longer exposure times at the tested wavelengths. Since the absorbance of the solute depends on its concentration [10], [11] it implies that the Ag NPs concentration on the PEI substrate increases as Ag NPs react with the 2-ME molecules. The concentration of the formed Ag NPs on the PEI substrate reaches its maximum when the absorbance intensity plateaus with increasing exposure time.…”

Section: A Pei/ag As a Sensor For 2-me In Vapourmentioning

confidence: 99%

“…Therefore, the maximum Ag NPs concentration occurs after 30 minutes of exposure to 0.01 M of 2-ME and after 180 minutes for 0.005 M 2-ME. The absorbance intensity increases for all tested wavelengths, indicating thereby the presence of rather a broad absorption band spectrum, due to a broad NPs size distribution and the presence of large particles (> 100 nm) [10], [12]. NPs size distribution could be also analyzed from the color change of the PEI/Ag once it reacted with 2-ME.…”

Section: A Pei/ag As a Sensor For 2-me In Vapourmentioning

confidence: 99%

PEI/Ag as an Optical Gas Nano-Sensor for Intelligent Food Packaging

Rvspayeva

Jones

Hughes

et al. 2018

2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)

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In this work we report research carried out on the manufacturing of an optical sensor based on polyetherimide (PEI) and Ag nanoparticles (NPs) for food packaging and food freshness control applications. PEI/Ag films were fabricated and tested as optical sensors by exposing them to 0.01 M and 0.005 M of 2-mercaptoethanol (2-ME). Thiol groups of 2-ME react on the surface of the sample and reduce the silver ions to Ag NPs, which lead to the change of color. The real-time measurement of meat freshness was performed for salmon, chicken, turkey and beef. The colorimetric and UV-vis absorbance responses were measured over duration of 80 hours. The PEI/Ag sensor shows a good response to the released gases by meat. Moreover, salmon, chicken and turkey are shown to produce color changes of PEI/Ag films after 20 hours of exposure, and beef after 60 hours of exposure. Therefore, this nano-sensor has a potential to serve as an indicator of food spoilage in the packaging.

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Optical properties and antimicrobial effects of silver nanoparticles synthesized by femtosecond laser photoreduction

Cited by 26 publications

References 33 publications

Selective Electroless Copper Deposition by Using Photolithographic Polymer/Ag Nanocomposite

Selective Electroless Copper Deposition by Using Photolithographic Polymer/Ag Nanocomposite

Biomedical Applications of Silver Nanoparticles: An Up-to-Date Overview

PEI/Ag as an Optical Gas Nano-Sensor for Intelligent Food Packaging

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