Enhancing the conductivity of plasma polymer functionalized electrodes using gold nanoparticles

Gheorghiu, Alex; Yang, Daisy; Li, Tiexin; Dief, Essam M.; Darwish, Nadim; Priest, Craig; MacGregor, Melanie

doi:10.1039/d3ma00641g

Cited by 2 publications

(3 citation statements)

References 48 publications

(72 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…51 To explore how the hydrophobic nature of PFO coatings could be used in such electrochemical setups, cyclic voltammetry (CV) tests were performed in which PFO coatings were deposited on a titanium foil. Since it has previously been demonstrated that AuNPs improve the charge permeability of plasma polymers, 34 no AuNP decoration of the foil was carried out here in order to study the intrinsic charge-transfer capability of the PFO film itself. Ten cycles of CV tests were performed at mild (0.2 V; −1 V) and harsh (0.2 V; −1.8 V) applied potentials on Ti substrates with 11, 23, and 68 nm thick coatings.…”

Section: Charge Transfer Through Nano Thinmentioning

confidence: 99%

“…Contrary to this common assumption, our group has shown that when deposited in thin enough layers, plasma polymers could allow charge transfer. In these works, nonfluorinated ultrathin plasma polymer coating deposited from methyloxazoline was successfully used in electrosensing applications for the detection of exosomes. , Here, we investigated ultrathin fluorinated plasma polymer films, hypothesizing that when deposited in optimally thin layers, charges will be allowed to pass through their loosely cross-linked building blocks. Such films could be very useful for electrocatalysis where a combination of hydrophobicity and charge transfer is utilized for gas conversion (CO 2 and N 2 ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hydrophobic Coatings with Charge Permeability via Plasma Deposition of Long-Chain Perfluorocarbons

Delcheva,

Weinfurter,

Hui

et al. 2024

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

Hydrophobization of nanotextured catalyst materials is a promising route to enhance the yield of N2 and CO2 conversion into green fuels. However, these applications require a hydrophobic coating to not only promote air trapping but also allow charge transfer at the electrode–electrolyte interface. In this work, nano thin films with thicknesses as low as 7 nm were deposited from the plasma phase of perfluorohexene, perfluorodecene, and perfluorooctane (PFO) precursors using a mild vacuum and gentle powers. Atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) characterization reveal that the resulting films are conformal and hydrophobic thanks to a good retention of CF2 and CF3 moieties. The PFO films exhibited the highest water contact angle and achieved superhydrophobic states when deposited on top of re-entrant nano features, an indication of successful air trapping. Electrochemical studies further demonstrated that the plasma-deposited PFO films allow charge transfer but could only sustain repeated cyclic voltammetry cycles without losing their hydrophobicity when deposited under optimal conditions. This result indicates that plasma deposition could become a viable route for the hydrophobization of electrocatalysts required to enhance the yield of poorly soluble gas reduction reactions.

show abstract

Section: Charge Transfer Through Nano Thinmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrophobic Coatings with Charge Permeability via Plasma Deposition of Long-Chain Perfluorocarbons

Delcheva,

Weinfurter,

Hui

et al. 2024

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In polymer matrices, incorporating NPs significantly enhances material properties, creating advanced composite materials. , A variety of polymer-based functional materials can be prepared by selecting different types of NPs and modifying them. Oberhausen et al studied the effect of functionalized iron oxide NPs on mechanical properties; Mani et al prepared a highly sensitive and selective electrochemical sensor using magnetic NPs; Gheorghiu et al used gold NPs to enhance the electrical conductivity of the insulating substrate film; Ahmed et al employed surface-functionalized titanium dioxide NPs to improve the dielectric and thermal properties of a polyester-based varnish; Cánovas et al explored the electrochromic properties of thin films sprayed with specially treated NPs.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Insight into the Effect of Chain Extension and Nonbond Interaction in Nanoparticle-Enhanced Plastic and Elastomer Double-Phase Recyclable Polymer Materials

Shang,

Ren,

Chen

et al. 2024

Macromolecules

View full text Add to dashboard Cite

Polymer nanocomposites (PNCs) demonstrate excellent mechanical properties through the addition of fillers to the polymer, making them versatile for various applications. However, the current challenge lies in the recycling of these PNCs. To investigate the performance changes in PNCs during the recycling process, a two-phase polymer was designed by using coarse-grained molecular dynamics simulations. Nanoparticles (NPs) with linear and ring structures were introduced to construct PNCs, and chain extenders (CEs) were added to realize chain extension reactions. The changes in the performance of PNCs with different proportions during the recycling process were explored by varying the amounts of CEs. Our results demonstrate that the variations in mechanical properties, as evidenced by the stress−strain curves, strain hardening trends, and rates of performance loss, are consistent across all PNCs, irrespective of the CE concentration. Analysis of the dynamic changes in NPs and matrix chains during the deformation process confirms that the influence of NPs is orientation-dependent. It can be inferred that the amount of CEs in PNCs has a completely different effect on the performance of those recycled many times. The incorporation of 75 CEs results in a matrix of long-chain polymers with varying molecular weights, which significantly enhances the mechanical properties. Overall, this study offers essential theoretical guidance and practical strategies for selecting and determining the optimal content of additives for the production and recycling of PNCs.

show abstract

Enhancing the conductivity of plasma polymer functionalized electrodes using gold nanoparticles

Abstract: Plasma deposited polyoxazoline thin films (POx) are a promising solution for the rapid, scalable, and substrate-independent immuno-functionalization of electrochemical biosensors.

Cited by 2 publications

References 48 publications

Hydrophobic Coatings with Charge Permeability via Plasma Deposition of Long-Chain Perfluorocarbons

Hydrophobic Coatings with Charge Permeability via Plasma Deposition of Long-Chain Perfluorocarbons

Molecular Dynamics Insight into the Effect of Chain Extension and Nonbond Interaction in Nanoparticle-Enhanced Plastic and Elastomer Double-Phase Recyclable Polymer Materials

Contact Info

Product

Resources

About