Plasma‐enhanced deposition of silver nanoparticles onto polymer and metal surfaces for the generation of antimicrobial characteristics

Abstract

Silver nanoparticle thin layers were deposited onto formaldehyde-radio frequency (RF)-plasma-functionalized medical-and food-grade silicone rubber, stainless steel, and paper surfaces. The silver deposition was carried out under ex situ plasma conditions using the Tollen's reaction. Results from survey and high-resolution electron spectroscopy for chemical analysis, scanning electron microscopy (SEM), atomic force microscopy (AFM), and energy dispersive X-ray spectroscopy investigations confirmed the presence of thin silver layers on the plasma-exposed and subsequently modified substrate surfaces. In addition, SEM and AFM demonstrated the nanoparticle-based morphology of the deposited layers. Our results showed that thin macromolecular layers bearing aldehyde functionalities can be deposited onto silicone rubber, stainless steel, and paper surfaces. The bactericidal properties of the silver-coated surfaces were demonstrated by exposing them to Listeria monocytogenes. No viable bacteria were detected after 12 to 18 h on silver-coated silicone rubber surfaces.

Electrical methods of controlling bacterial adhesion and biofilm on device surfaces

“…Limitations of conductive polymers are generally due to manufacturing costs, material variation, toxicity, poor solubility in solvents and inability to directly melt the polymer. However, when used as a very thin surface layer on a catheter for example [102], they are as effective as indium tin oxide [65]. Composite materials such as silicones mixed with silver or nickel particles could offer the best possible solution at present for implementing some of the most promising recent electrical bacterial control strategies in an IMD [30,69,85] Silver nanoparticles embedded in a polymer matrix deposited using plasma polymerization could form a conductive polymer with inherent antibacterial properties [103].…”

Characterization of silver nanoparticles by green synthesis method using Pedalium murex leaf extract and their antibacterial activity

“…They are ahead of time the interest of researchers for their novel method for synthesis of silver nanoparticles. Silver is well known for possessing an inhibitory result toward many bacterial strains and microorganisms commonly present in medical and industrial processes (Jiang et al 2004). The general method of synthesizing silver nanoparticles in chemical reduction is as colloidal dispersions in water or organic solvents (Sharma et al 2009).…”

Plasmonic Nanoparticles and Their Conjugates: Preparation, Optical Properties and Antimicrobial Activity

“…Therefore, the addition of the organic gold salts to the peptide monomer assembly likely has a significant influence on those chemical interactions to alter the assembled structure. Because the nano-doughnuts were not observed when an inorganic gold salt, HAuCl 4 , was incubated in the peptide solution instead of AuPMe 3 Cl, the ligand of this organic gold salt may play an important role in the assembly of the nano-doughnuts. The IR investigation suggests that the organic gold salts are incorporated in the peptide self-assemblies and contribute to the nano-doughnut formation.…”

“…Nanoparticles exhibit novel material properties which largely differ from the bulk materials due to these small sizes, including quantum size effect on photochemistry, nonlinear optical properties of semiconductor or the emergence of metallic properties with the size of the particles, the high penetration efficiency into the cells and energy storing ability. Zero-(0D) and one-dimensional (1D) noble metal nanoparticles have extensive applications, such as antibacterial materials [4] , two-dimensional (2D) and three-dimensional (3D) assemblies can act as antistatic materials, cryogenic superconducting materials [5] and biosensor materials. Many nanogold and nanosilver based environmental technologies (e.g., sensors, sorbents, reactants, templates, bioprobes,) are under very active research and development, and are expected to emerge as the next generation environmental technologies to improve or replace various conventional environmental technologies [6] .…”