Silver nanowire-embedded PDMS with high electrical conductivity: nanowires synthesis, composite processing and electrical analysis

Karimi-Chaleshtori, R.; Nassajpour-Esfahani, Amir Hossein; Saeri, M.R.; Rezai, Pouya; Doostmohammadi, Ali

doi:10.1016/j.mtchem.2021.100496

Cited by 27 publications

(15 citation statements)

References 47 publications

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“…The FT-IR spectra of the pristine AgNW, pure MOF, and AgNW@MOF hybrid present a broad absorption band in the range of 3000 to 3700 cm –1 , which refers to the stretching vibrations of the hydroxyl group (Figure g). The absorption peaks at wavenumbers of 1657 and 1291 cm –1 in the pristine AgNW spectrum are assigned to the stretching vibrations of CO and C–N, respectively, both of which originate from PVP molecules . For the pure MOF sample, the absorption band at 1582 cm –1 is ascribed to the asymmetric stretching vibration of COO – , and the three sharp peaks located at 1397, 1377, and 1353 cm –1 are assigned to the symmetric stretching vibration of COO – .…”

Section: Resultsmentioning

confidence: 98%

“…The absorption peaks at wavenumbers of 1657 and 1291 cm −1 in the pristine AgNW spectrum are assigned to the stretching vibrations of C�O and C−N, respectively, both of which originate from PVP molecules. 62 For the pure MOF sample, the absorption band at 1582 cm −1 is ascribed to the asymmetric stretching vibration of COO − , 63 and the three sharp peaks located at 1397, 1377, and 1353 cm −1 are assigned to the symmetric stretching vibration of COO − . 64 In addition, the absorption peak at 766 cm −1 is likely due to the symmetric bending mode of COO − , 64 and the peak at 568 cm −1 is associated with the Zn−O vibration.…”

Section: ■ Results and Discussionmentioning

confidence: 98%

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Metal–Organic Framework-Modified Silver Nanowire Transparent Film with Enhanced Conductivity and Stability for Efficient Organic Light-Emitting Diodes

Zhao

Huang

Kang

et al. 2023

ACS Appl. Mater. Interfaces

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Silver nanowire (AgNW) is recognized as a critical material for developing the next generation of transparent conductive films (TCFs); however, poor stability remains a major issue. Herein, we demonstrate a stable AgNW TCF passivated by a metal–organic framework (MOF) via a facile solution process. The MOF is chemically bonded to the surface of the AgNWs as a chemical inhibitor, which contributes to passivating highly active sites and providing chemical protection, leading to enhanced resistance to corrosive molecules and thereby offering exceptional stability under an ambient atmosphere. Simultaneously, the binding interaction with the MOF anchors silver atoms at the surface of the nanowires, suppressing their diffusion at high temperatures and allowing the AgNW film to maintain excellent conductivity up to 300 °C. Additionally, the hydrogen bonding between the MOF and the substrate, along with the tight connection of the MOF with AgNWs, improves the welding between the nanowires, enhancing the conductivity of the AgNW film at mild conditions while offering good flexibility and adhesion properties. Furthermore, the OLED device integrating the MOF-modified AgNW electrode shows comparable performance to an indium tin oxide-based device, verifying its huge potential for applications in optoelectronic devices.

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Section: Resultsmentioning

confidence: 98%

Section: ■ Results and Discussionmentioning

confidence: 98%

Metal–Organic Framework-Modified Silver Nanowire Transparent Film with Enhanced Conductivity and Stability for Efficient Organic Light-Emitting Diodes

Zhao

Huang

Kang

et al. 2023

ACS Appl. Mater. Interfaces

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“…In addition, PDMS served as a compliant backing layer, which is easily processable in various shapes or sizes, is less expensive than a metal plate, and has excellent corrosion resistance properties . PDMS is also an attractive material that can be modified to provide different properties such as the incorporation of conducting additives or biopolymers. − However, deactivation from the nonconductive surfaces occurred at a slower rate when compared to the test setup, where a conductive metal was used both as a substrate and a counter electrode. Increasing the electronic conductivity of the adhesive by adding conductive particles or polymers may be required to speed up the deactivation process. − Nevertheless, the ability to deactivate catechol-based adhesives using applied electricity beyond conductive surfaces greatly increases the potential utility of this technology.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Deactivation of Switchable Catechol-Containing Smart Adhesive from Nonconductive Surfaces

Bhuiyan

Manuel

Razaviamri

et al. 2023

ACS Appl. Polym. Mater.

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The feasibility of deactivating and reactivating a catechol-containing smart adhesive electrochemically while in direct contact with a nonconductive surface was explored in this work. The adhesive was coated over an aluminum mesh-attached poly(dimethylsiloxane) (AM-PDMS) substrate. The aluminum mesh served as an electrode to apply electricity through the adhesive. A silver (Ag) counter electrode was coated in the periphery of the adhesive–substrate interface to deactivate the adhesive attached to the nonconductive surfaces including glass and poly(methyl methacrylate) (PMMA) substrates. The deactivation of the adhesive was performed with the application of up to 20 V of applied electricity utilizing the Ag electrode as a cathode and the aluminum mesh as an anode. The adhesion strength of the adhesive toward nonconductive surfaces decreased by 98% after in situ application of electricity. The deactivation rate was tunable with the applied voltage level, exposure time to the applied voltage, surface area of the adhesive interface, and aluminum mesh size. The deactivated adhesive was reactivated electrochemically by reversing the electrode polarity up to 3 cycles utilizing catechol–boronate complexation chemistry.

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“…[21,35] The electrical properties of the NWs reinforcing polymer matrices critically affect the final properties of the composites, together with the specific processing condition, being typically needed larger filler contents of metallic NW to obtain conductive composites that for carbon nanotube-based composites. [33,36]…”

Section: Physical-chemical Propertiesmentioning

confidence: 99%

Multifunctional Touch Sensing and Antibacterial Polymer‐Based Core‐Shell Metallic Nanowire Composites for High Traffic Surfaces

Polícia

Peřinka

Alesanco

et al. 2022

Adv Materials Technologies

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also related to the recent COVID-19 outbreak. This pandemic scenario poses significant threats to public health [1] and there is an urgent need to find robust methods to control the spread of disease in public places or hospital settings. This is important for both viruses and bacteria since COVID-19 patients have an increased risk of cross-contamination, [2] which may increase the risk of developing severe disease and thus induce a higher mortality rate.It is consensual that the spread of viruses and bacteria are mostly related to exposure to respiratory droplets. [3] Nevertheless, the infection through contact with contaminated surfaces or objects (fomites) is an increasing reality and it is still not clear the proportion of this type of transmission for a variety of bacterial infections. In fact, it has been also reported cases of COVID-19 infection potentially attributed to fomite transmission, [4] transmitted between people by touching surfaces on which an ill person has recently coughed or sneezed on. [5] Indeed, high traffic surfaces in public spaces such asThe transmission of bacterial infections through contaminated surfaces is nowadays an increasing source of concern, also related to the current pandemic situation. Functional materials that prevent the adhesion of microorganisms and/ or induce their eradication thus avoiding fomite transmission are highly needed. In this work, a highly antimicrobial hybrid with sensorial capability is developed to be further applied as interactive high traffic surface coatings. The nanocomposite is composed of polyvinylidene fluoride (PVDF), a highly stable fluorinated polymer, incorporating copper core-shell nanowires (NWs). The NWs comprised of copper and shelled with silver is highly antimicrobial, inducing a full kill effect against Escherichia coli and Staphylococcus epidermidis strains but biocompatible towards mammalian cells at concentrations below 0.5 mg mL −1 . Further NWs incorporation on PVDF matrix retains its antimicrobial activity reducing in 6.5 logs the E. coli and 4.5 logs the S. epidermidis. NW/PVDF composites demonstrate suitable mechanical and electrical characteristics for the development of capacitive sensing surfaces, allowing for the fabrication of an antimicrobial capacitive touch sensing matrix for interactive surfaces.

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Silver nanowire-embedded PDMS with high electrical conductivity: nanowires synthesis, composite processing and electrical analysis

Cited by 27 publications

References 47 publications

Metal–Organic Framework-Modified Silver Nanowire Transparent Film with Enhanced Conductivity and Stability for Efficient Organic Light-Emitting Diodes

Metal–Organic Framework-Modified Silver Nanowire Transparent Film with Enhanced Conductivity and Stability for Efficient Organic Light-Emitting Diodes

Electrochemical Deactivation of Switchable Catechol-Containing Smart Adhesive from Nonconductive Surfaces

Multifunctional Touch Sensing and Antibacterial Polymer‐Based Core‐Shell Metallic Nanowire Composites for High Traffic Surfaces

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