One pot fabrication of optically active and efficient antibacterial poly(amide-benzimidazole-imide)/Ag bionanocomposite

Mallakpour, Shadpour; Abdolmaleki, Amir; Borandeh, Sedigheh; Sabzalian, Mohammad R.

doi:10.1007/s10965-015-0743-1

Cited by 10 publications

(3 citation statements)

References 45 publications

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“…However, the signal is faint, most likely because the CR−Ag NPs are distributed throughout the polymer matrix. Additionally, the EDX profile of the produced polymer nanocomposites exhibits signals related to oxygen, which may have been generated by the embedded CR−Ag NPs [48] . From the above observations, it is clear that the modification of PVA by the inclusion/incorporation of CR−Ag NPs is significant and is supported by the existing elements on the CR−Ag PVA films.…”

Section: Resultsmentioning

confidence: 84%

Biosynthesized Silver Nanoparticles Encapsulated in a Poly(vinyl alcohol) Matrix: Dielectric and Structural Properties

et al. 2022

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In the present investigation, silver (Ag) nanoparticles were prepared employing green synthesis from the aqueous leaves extract of Cyperus rotundus (CR) plant at ambient temperature in less reaction time. A preliminary phytochemical analysis test was performed, and it has been revealed that the extract comprised bioactive components such as alkaloids, phenols, and terpenoids, among others. For average size, the morphology (spherical shape) and purity of the nanoparticles were characterized using scanning electron microscopy (SEM, 358 nm) with energy-dispersive X-ray (EDX), dynamic light scattering (27 nm), high-resolution transmission electron microscopy (3.9 nm), and selected area electron diffraction (SAED) pattern methods. Without any extra peaks in the EDX spectrum, the produced Ag nanoparticles were confirmed to be pure. In addition, the solvent-casting approach has been used to encapsulate a different weight fraction of biosynthesized Ag nanoparticles (CRÀ AgÀ NPs) in a polyvinyl alcohol (PVA) matrix. By using UV-visible, FTIR spectroscopy, and SEM, we were able to characterize the synthesized CRÀ AgÀ NPs as well as their composite (PVA) films, and we were able to compare the results with those of pristine PVA. The effects of doping with CRÀ AgÀ NPs on structural and morphological changes of PVA were studied. Impedance studies, including dielectric constant, dielectric loss, tangent loss, and AC conductivity, revealed that incorporating CRÀ AgÀ NPs into the PVA matrix impacts the electrical properties of PVA. This study showed that the synthesized nanoparticles had a spherical shape with entangled biocomponents and were encapsulated within the PVA polymer matrix, indicating that CRÀ AgÀ NPs can be used in various applications (wound healing).

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Section: Resultsmentioning

confidence: 84%

Biosynthesized Silver Nanoparticles Encapsulated in a Poly(vinyl alcohol) Matrix: Dielectric and Structural Properties

et al. 2022

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“…Results showed that these NPs not only can generate a stronger signal than the usually used gold nanorods and single-walled carbon nanotubes on a per mass basis but also they are an ideal nanoplatform for enhancing photoacoustic molecular probes. Mallakpour et al [92] synthesized poly (amide-benzimidazole-imide) (PABI) nanostructure containing amino acid. FE-SEM images showed nano-patterns of PABI particles with homogenous spherical shape.…”

Section: Application Of Other Class Of Nanostructure Polymersmentioning

confidence: 99%

Polymeric nanoparticles: Recent development in synthesis and application

Mallakpour¹,

Behranvand²

2016

Express Polym. Lett.

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Abstract. Nanosized particles have attractive characteristics, which have received considerable attention in the last decade. Polymeric nanoparticles (PNP)s are solid particles or particulate dispersions with size in the range of 10-1000 nm. Due to the very small size, the surface area is very large so the percentage of atoms or molecules on the surface is significantly increased, which is expected to have extensive applications in various fields such as drug delivery systems, biosensors, catalysts, nanocomposites, agriculture and environment. The aim of the present paper is to critically review enhancement in the field of synthesis and different application of novel PNPs in various area from drug delivery to composite fabrication. Literature sources were mainly taken from the publications of 2011 and later; though, for a basic depiction of the structural principles, older publications have also been cited. Vol.10, No.11 (2016) 895-913 Available online at www.expresspolymlett.com DOI: 10.3144/expresspolymlett.2016.84 * Corresponding author, e-mail: mallak@cc.iut.ac.ir © BME-PT of these methods as low cost and safe ways should be highlighted. Furthermore, their importance according to their applications discusses. We will also show some properties of them such as morphology and biological activity. Keywords: biopolymers, biocomposites, polymeric nanoparticles, drug delivery systems, biosensors eXPRESS Polymer Letters

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“…Hence, alternative approaches are needed to strengthen the antifungal pipeline . In recent years, nanomaterials have been used to form novel antimicrobial agents with distinctive chemical and physical properties. , Nanomaterials like silver (Ag), , zinc oxide (ZnO), titanium dioxide (TiO 2 ), iron oxide (Fe 3 O 4 ), copper oxide (CuO), magnesium oxide (MgO), and nitric oxide (NO) nanoparticles have displayed antibacterial activity. However, their toxicity has proven to be challenging for applications in the biomedical field…”

Section: Introductionmentioning

confidence: 99%

Eradication of Fungi Using MoSe₂/Chitosan Nanosheets

Saha

Gilliam

Wang

et al. 2022

ACS Appl. Nano Mater.

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Antifungal drug resistance is an increasingly significant threat to humans, livestock, and crops. Recent studies have shown nanomaterials as promising alternatives in combating drug-resistant pathogens. Here, we show that molybdenum diselenide (MoSe 2 ) nanosheets dispersed in the cationic polymer chitosan (CS) exhibit exceptional antifungal activity. The MoSe 2 /CS nanosheets provide minimum inhibitory concentrations (MICs) between 0.78 and 37.5 μg ml −1 against a variety of unicellular fungal strains and demonstrate minimum fungicidal concentrations (MFCs) from 0.5 to 75 μg ml −1 for diverse unicellular and filamentous strains. Furthermore, we demonstrate the ability of MoSe 2 /CS to eradicate increasingly prevalent and highly multi-drug-resistant (MDR) fungi Candida auris strains with MICs of 25 to 50 μm ml −1 and MFCs of 37.5 to 150 μm ml −1 . The effective antifungal activity of MoSe 2 /CS was observed after an incubation time of 3 h, which is faster than the time needed for other nanomaterial-based antifungal agents incorporating graphene, two-dimensional (2D) nanomaterials, or silver nanoparticles. MoSe 2 /CS also showed high biocompatibility and was benign toward human red blood cells and human embryonic kidney cells. Electron microscopy and confocal optical microscopy show that fungal cells treated with MoSe 2 /CS nanosheets exhibit morphological deformities, ruptured cell walls and interior voids, and metabolic inactivation. Mechanistic investigations revealed that treatment with MoSe 2 /CS triggers complete membrane depolarization and membrane disintegration within 3 h. Hence, this work demonstrates that the biocompatible nanomaterial MoSe 2 /CS is a highly effective alternative antifungal agent against many kinds of pathogenic fungi including MDR strains.

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One pot fabrication of optically active and efficient antibacterial poly(amide-benzimidazole-imide)/Ag bionanocomposite

Cited by 10 publications

References 45 publications

Biosynthesized Silver Nanoparticles Encapsulated in a Poly(vinyl alcohol) Matrix: Dielectric and Structural Properties

Biosynthesized Silver Nanoparticles Encapsulated in a Poly(vinyl alcohol) Matrix: Dielectric and Structural Properties

Polymeric nanoparticles: Recent development in synthesis and application

Eradication of Fungi Using MoSe₂/Chitosan Nanosheets

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One pot fabrication of optically active and efficient antibacterial poly(amide-benzimidazole-imide)/Ag bionanocomposite

Cited by 10 publications

References 45 publications

Biosynthesized Silver Nanoparticles Encapsulated in a Poly(vinyl alcohol) Matrix: Dielectric and Structural Properties

Biosynthesized Silver Nanoparticles Encapsulated in a Poly(vinyl alcohol) Matrix: Dielectric and Structural Properties

Polymeric nanoparticles: Recent development in synthesis and application

Eradication of Fungi Using MoSe2/Chitosan Nanosheets

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Product

Resources

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Eradication of Fungi Using MoSe₂/Chitosan Nanosheets