Antimicrobial and mechanical properties of functionalized textile by nanoarchitectured photoinduced Ag@polymer coating

Plé, Jessica; Dabert, Marine; Lecoq, Hélène; Hellé, Sophie; Ploux, Lydie; Balan, Lavinia

doi:10.3762/bjnano.14.11

Cited by 3 publications

(4 citation statements)

References 64 publications

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“…Shifts in these peaks at lower (blue shift) and higher (red shift) wavenumbers are due to the chemical bond length of molecules ( 40 ). The larger bond length causes a shift to a lower wavenumber and vice-versa ( 41 ). Major peak shifts were observed in LN-229 cells at the periphery compared to the nucleus ( Figure 6I ; Table S2 ).…”

Section: Resultsmentioning

confidence: 99%

Understanding the role of membrane cholesterol upon Epstein Barr virus infection in astroglial cells

Rani,

Tanwar,

Verma

et al. 2023

Front. Immunol.

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BackgroundEBV infection has long been postulated to trigger multiple sclerosis (MS) and anti-EBV antibodies showed a consistent presence in MS patients. Previous reports from our group have shown that the EBV infects different brain cells. Entry of the virus in neuronal cells is assisted by several host factors including membrane cholesterol. By using an inhibitor, methyl-β-cyclodextrin (MβCD), we evaluated the role of membrane cholesterol in EBV infection and pathogenesisMethodologyThe membrane cholesterol depleted cells were infected with EBV and its latent genes expression were assessed. Further, EBV-mediated downstream signalling molecules namely STAT3, RIP, NF-kB and TNF-α levels was checked at protein level along with spatial (periphery and nucleus) and temporal changes in biomolecular fingerprints with Raman microspectroscopy (RS).ResultsUpon treatment with MβCD, lmp1 and lmp2a suggested significant downregulation compared to EBV infection. Downstream molecules like STAT3 and RIP, exhibited a decrease in protein levels temporally upon exposure to MβCD while NF-kB levels were found to be increased. Further, the intensity of the Raman spectra exhibited an increase in triglycerides and fatty acids in the cytoplasm of EBV-infected LN-229 cells compared to MβCD+EBV. Likewise, the Raman peak width of cholesterol, lipid and fatty acids were found to be reduced in EBV-infected samples indicates elevation in the cholesterol specific moieties. In contrast, an opposite pattern was observed in the nucleus. Moreover, the ingenuity pathway analysis revealed protein molecules such as VLDLR, MBP and APP that are associated with altered profile of cholesterol, fatty acids and triglycerides with infection-related CNS disorders.ConclusionTaken together, our results underline the important role of membrane cholesterol over EBV entry/pathogenesis in astroglia cells which further trigger/exacerbate virus-associated neuropathologies. These results likely to aid into the prognosis of neurological disease like MS.

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Section: Resultsmentioning

confidence: 99%

Understanding the role of membrane cholesterol upon Epstein Barr virus infection in astroglial cells

Rani,

Tanwar,

Verma

et al. 2023

Front. Immunol.

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“…This work has also been extended to include MOD ink formulations to produce gold films and textiles with polymer/silver-based structures with antimicrobial activity. 51,52 5.1.3. Laser Sintering.…”

Section: Processing Of Printed Mod Inkmentioning

confidence: 99%

“…It should also be noted that there is no solvent present in these ink formulations, so heat is not required to remove carrier solvent from the ink formulations, and the films solidify as the polymerization is completed. This work has also been extended to include MOD ink formulations to produce gold films and textiles with polymer/silver-based structures with antimicrobial activity. , …”

Section: Processing Of Printed Mod Inkmentioning

confidence: 99%

Advanced Applications of Metal–Organic Decomposition Inks in Printed Electronics

Kell,

Wagner,

Liu

et al. 2023

ACS Appl. Electron. Mater.

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Technology-based industries are constantly seeking materials and methods to fabricate compact, high-performance, and increasingly more complex printed electronic devices, fostering research in advanced conductive inks and processing techniques. Metal−organic decomposition (MOD) inks are a class of conductive inks based on molecular metal precursors that decompose into metallic features once printed, imparting them with unique attributes that distinguish them from particle-based inks. This Spotlight on Applications summarizes recent progress in understanding the chemistry, rheology, and printability of MOD inks that enable them to be printed, processed, and used with material substrates in unconventional ways. Their unique properties and capabilities are being leveraged to advance the field of printed electronics, from their use in 2.5D and 3D surfaces, wearables, and fine line printing and thus broadening the form factors and improving properties of devices used in the medial, automotive and aerospace industries.

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“…To avoid the use of harmful products or processes, a photoinduced approach has been developed to synthesize monometallic NPs in a photopolymerizable matrix by combining the photoinduced synthesis of metal NPs and the photo-cross-linking of monomers. − …”

Section: Introductionmentioning

confidence: 99%

Plasmon Active Functional Coatings with Hybrid Bimetallic Nanoparticles@Polymers by a Single Step Photoinduced Approach

Haemers,

Zanghi,

Le Bec

et al. 2024

ACS Appl. Opt. Mater.

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This study presents a direct method for creating bimetallic nanoparticles (Ag/Au BNPs) within a polymerizable host by a UV light process under atmospheric conditions (air, temperature and pressure). This approach offers both simplicity and efficiency by combining the photoinduced reduction of metal precursors (AgNO 3 and KAuCl 4 ) and the radical photopolymerization of a polyethylene glycol diacrylate in a single step. As a result, plasmon active coatings were obtained with three different BNPs in the form of Ag−Au alloy or core−shells (Ag@Au or Au@ Ag) confined in the polymer matrix, with an average diameter between 4 and 6 nm, respectively. The method requires only 15 to 45 min depending on the desired BNP system that was easily triggered by playing with the redox potentials of the metal pairs and small amounts (200−300 μL) of water or acetonitrile solvents used to dissolve these precursors. This control determines which metal is reduced first to form the core and which follows for the shell or even both simultaneously for the formation of the alloy system. Moreover, double-layered systems such as Ag@Au@Ag can also be synthesized with this approach. Various advanced characterization techniques, including real-time UV−vis spectroscopy, X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, and transmission electron microscopy (in particular scanning transmission electron microscopy-high angle annular dark field imaging and energy-dispersive X-ray spectroscopy elemental mapping), were used to monitor the synthesis process and identify the formed BNP system. These new plasmonic materials exhibit unique optical properties depending on the BNP system, making them promising for multiple applications such as sensing, surface-enhanced Raman spectroscopy, optics, catalysis, or photocatalysis and are easily scalable for large-scale production.

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Antimicrobial and mechanical properties of functionalized textile by nanoarchitectured photoinduced Ag@polymer coating

Cited by 3 publications

References 64 publications

Understanding the role of membrane cholesterol upon Epstein Barr virus infection in astroglial cells

Understanding the role of membrane cholesterol upon Epstein Barr virus infection in astroglial cells

Advanced Applications of Metal–Organic Decomposition Inks in Printed Electronics

Plasmon Active Functional Coatings with Hybrid Bimetallic Nanoparticles@Polymers by a Single Step Photoinduced Approach

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