A facile and versatile route for preparation AgNp nanocomposite thin films via thiol-acrylate photopolymerization: Determination of antibacterial activity

Adıbelli, Melisa; Ozcelik, Elif; Batibay, Gonul S.; Arasoğlu, Tülin; Arsu, Nergis

doi:10.1016/j.porgcoat.2020.105620

Cited by 18 publications

(7 citation statements)

References 41 publications

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“…The absorbance red-shifts to lower energies when the distance between the particles increases or decreases. The silver nanoparticles, then, seem brown and yellow, while the gold nanoparticles illustrate purple and blue tones. − A metal’s Surface plasmon resonance “SPR” band can be defined as these distinguishing plasmon resonance absorbances. , The frequency of oscillations depends on the metal, the particle size and shape, the interparticle distance, temperature, dielectric constant, and viscosity of the medium . Noble metals demonstrate an intense resonance because of the strong coupling between the plasmon transition and interband excitation.…”

Section: Resultsmentioning

confidence: 99%

Light-Assisted Synthesis of Silver and Gold Nanoparticles by New Benzophenone Derivatives

et al. 2023

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Benzophenone derivatives were evaluated as new photoinitiators in combination with triethylamine (TEA) and iodonium salt (Iod) for very rapid and efficient formation of metal nanoparticles in an organic solvent, by which silver and gold ions were reduced under light at 419 nm (photoreactor) with an irradiation intensity of 250 microwatts/cm 2 . The new benzophenone derivatives combined with TEA/Iod salt showed good production of metal nanoparticles (Au 0 and Ag 0 ) and a small size of nanoparticles of around 4−13 nm. The photochemical mechanisms for the production of initiating radicals were studied using cyclic voltammetry, where a negative ΔG of around −1.96 eV was obtained, which made the process favorable. The obtained results proved the formation of amine and phenyl radicals, which led to the reduction of gold III chloride or silver ions to the gold and silver NPs. The UV−vis spectroscopy technique was used as a very beneficial tool for the surface plasmon resonance band detection of metal nanoparticles. To sum up the results, we have observed that nanoparticles (NPs) were distributed differently in different photoinitiator systems and the particle size also changed by changing the system of initiation. In comparison to the system alone, not only were the nanoparticles smaller but they were also generated within a shorter period of irradiation time for the system BP\Iod\TEA. Finally, the quenching process of benzophenone fluorescence by the gold and silver nanoparticles was investigated.

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Section: Resultsmentioning

confidence: 99%

Light-Assisted Synthesis of Silver and Gold Nanoparticles by New Benzophenone Derivatives

et al. 2023

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“…This binding of AgNPs to bacterial cell wall is caused by a difference in charge between the nanoparticles and the bacterial cell wall. Further, the high surface area of nanoparticles, size of the nanoparticles and the ability to generate free radicals might have influenced the effective antibacterial efficacy of nanoparticles 51,52 . The binding of AgNPs to a bacterial cell wall stimulates conformational changes in membrane proteins, which results in an increase in membrane permeability.…”

Section: 006 C 20 H 34 O Thunbergolmentioning

confidence: 99%

Evaluation of Secondary Metabolites of Ageratina adenophora and Synthesis of Silver Nanoparticles for its Antibacterial and Antioxidant Activity

Maheswari¹,

N²,

N³

et al. 2023

Orient. J. Chem

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Synthetic antibiotics have been successfully utilized for decades against pathogenic bacteria to control infectious diseases. However, the continuous and overuse has resulted in multidrug resistant (MDR) bacterial species. Further, the negative side effects caused by commercial antibiotics also hindered their usage. The phytochemicals produced by plants in response to adverse biotic and abiotic conditions possess significant pharmacological properties and can be an effective alternative to synthetic antibiotics. The phytochemicals of Ageratinaadenophora, served the role of reducing and stabilizing agent. Ageratinaadenophora mediated silver nanoparticles (Aa-AgNPs) were characterized using advanced spectroscopic instrumentation. The qualitative analysis by GC-MS showed Methyl ionone, 2(3H)-Naphthalenone, 4, 4a, 5, 6, 7, 8- hexahydro-4a,7,7-trimethyl-(R), Isolongifolone as the major compounds. The quantitative estimation showed leaves were rich in total phenol, flavonoids, alkaloids and tannins. The Aa-AgNPs were effective in inhibiting bacterial pathogens. Further, A.adenophora mediated nanoparticles possessed strong antioxidant activity.

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“…Many studies have been published in which photoinitiator molecules are used simultaneously both as initiators for polymerization and as photoreducing agents for Np synthesis. [21][22][23][24][25][26] Photoinitiators are the main component in this technique and they greatly affect the properties of the polymeric film. 2-mercaptothioxantone and thioxanthone acetic acid derivatives, one-component type II photoinitiators, have been used in the photochemical synthesis of various metal and metal oxide Nps.…”

Section: Introductionmentioning

confidence: 99%

“…2-mercaptothioxantone and thioxanthone acetic acid derivatives, one-component type II photoinitiators, have been used in the photochemical synthesis of various metal and metal oxide Nps. [21][22][23][24] In addition, another important application of these photoinitiators that has been studied is the investigation of binding mechanisms with DNA. [27][28][29] As a continuing interest in new photoinitiator systems, TX attached POSS as a nanophotoinitiator was synthesized and used for formation of a hybrid network of PEG formulations.…”

Section: Introductionmentioning

confidence: 99%

Thermal and morphological investigation of the effect of POSS‐(PEG₂₀₀₀)₈ addition to UV curable PEGMEA/PEGDA formulation and simultaneously in situ formed silver nanoparticles

Kazancioglu

Batibay

Uner

et al. 2021

Journal of Polymer Science

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In this study, hybrid nanocomposites were synthesized by photo‐crosslinking of poly (ethylene glycol) methyl ether acrylate/poly (ethylene glycol) diacrylate monomer system using 2‐ (carboxymethoxy) thioxanthone and POSS‐(PEG2000)8. Additionally, AgNO3 was added to this formulation and in situ formation of silver nanoparticles onto hybrid nanocomposites were achieved in one‐step. UV–Vis spectroscopy technique was used as a very useful tool for surface plasmon resonance band detection of silver nanoparticles. In addition to thermogravimetric analyses which were performed in nitrogen atmosphere to determine the thermal stability of the nanocomposites, dynamic light scattering, and scanning electron microscopy techniques were also used for size and morphology of silver nanoparticles in a hybrid network. TGA analyses proved that even the addition of a very low amount of POSS‐(PEG2000)8 made noteworthy contribution to thermal stability especially in the presence of silver nanoparticles in the hybrid network. The swelling capacities of the prepared films were examined at 1, 3 and 24 h in phosphate buffer solution (pH = 7.4). It was found that film containing only POSS‐(PEG2000)8 had the highest swelling ratio in the shortest time.

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A facile and versatile route for preparation AgNp nanocomposite thin films via thiol-acrylate photopolymerization: Determination of antibacterial activity

Cited by 18 publications

References 41 publications

Light-Assisted Synthesis of Silver and Gold Nanoparticles by New Benzophenone Derivatives

Light-Assisted Synthesis of Silver and Gold Nanoparticles by New Benzophenone Derivatives

Evaluation of Secondary Metabolites of Ageratina adenophora and Synthesis of Silver Nanoparticles for its Antibacterial and Antioxidant Activity

Thermal and morphological investigation of the effect of POSS‐(PEG₂₀₀₀)₈ addition to UV curable PEGMEA/PEGDA formulation and simultaneously in situ formed silver nanoparticles

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A facile and versatile route for preparation AgNp nanocomposite thin films via thiol-acrylate photopolymerization: Determination of antibacterial activity

Cited by 18 publications

References 41 publications

Light-Assisted Synthesis of Silver and Gold Nanoparticles by New Benzophenone Derivatives

Light-Assisted Synthesis of Silver and Gold Nanoparticles by New Benzophenone Derivatives

Evaluation of Secondary Metabolites of Ageratina adenophora and Synthesis of Silver Nanoparticles for its Antibacterial and Antioxidant Activity

Thermal and morphological investigation of the effect of POSS‐(PEG2000)8 addition to UV curable PEGMEA/PEGDA formulation and simultaneously in situ formed silver nanoparticles

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Thermal and morphological investigation of the effect of POSS‐(PEG₂₀₀₀)₈ addition to UV curable PEGMEA/PEGDA formulation and simultaneously in situ formed silver nanoparticles