title: Light-activated polymethylmethacrylate nanofibers with antibacterial activity.
abstract: The creation of an antibacterial material with triggerable properties enables us to avoid the overuse or misuse of antibacterial substances and, thus, prevent the emergence of resistant bacterial strains. As a potential light-activated antibacterial material, polymethylmethacrylate (PMMA) nanofibers doped with silver nanoparticles (AgNPs) and meso-tetraphenylporphyrin (TPP) were prepared by electrospinning. TPP was chosen as an effectively reactive oxygen species (ROS) producer. Antibacterial tests on Staphylococcus epidermidis (S. epidermidis) and Enterococcus faecalis (E. faecalis) showed the excellent light-triggerable antibacterial activity of the doped materials. Upon light irradiation at the wavelength corresponding to the TPP absorption peak (405nm), antibacterial activity dramatically increased, mostly due to the release of AgNPs from the polymer matrix. Furthermore, under prolonged light irradiation, the AgNPs/TPP/PMMA nanofibers, displayed enhanced longevity and photothermal stability. Thus, our results suggest that the proposed material is a promising option for the photodynamic inactivation of bacteria.
authors.affiliation: Department of Solid State Engineering, University of Chemistry and Technology, 16628 Prague, Czech Republic.
authors.forename: Roman
authors.initials: R
authors.lastname: Elashnikov
authors.affiliation: Department of Solid State Engineering, University of Chemistry and Technology, 16628 Prague, Czech Republic. Electronic address: lyutakoo@vscht.cz.
authors.forename: Oleksiy
authors.initials: O
authors.lastname: Lyutakov
authors.affiliation: Department of Biochemistry and Microbiology, University of Chemistry and Technology, 16628 Prague, Czech Republic.
authors.forename: Pavel
authors.initials: P
authors.lastname: Ulbrich
authors.affiliation: Department of Solid State Engineering, University of Chemistry and Technology, 16628 Prague, Czech Republic.
authors.forename: Vaclav
authors.initials: V
authors.lastname: Svorcik
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D013293:Enterococcus faecalis / Q000254:growth & development*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013212:Staphylococcus epidermidis / Q000254:growth & development*
chemical_list: D000900:Anti-Bacterial Agents; D012834:Silver; D019904:Polymethyl Methacrylate
keywords: Antibacterial; Light-activated; Polymethylmethacrylate; Silver nanoparticle; Triggerable release