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Description
  • Anion exchange polystyrene nanofiber materials (AE) were prepared by electrospinning followed by two-step functionalization of the nanofiber surface by chlorosulfonic acid and ethylendiamine. The photoactive character of these materials was introduced through adsorption of the tetra-anionic 5,10,15,20-tetra-kis-(4-sulfonatophenyl) porphyrin photosensitizer (TPPS-AE) on the nanofiber surface or by encapsulation of the nonpolar 5,10,15,20-tetraphenylporphyrin photosensitizer (AE(TPP)) into the nanofibers. Anion exchange nanofiber materials with porphyrins are characterized by a high ion-exchange capacity, photo-generation of singlet oxygen O-2((1)Delta(g)), and singlet oxygen-sensitized delayed fluorescence. Due to the photogeneration of cytotoxic O-2((1)Delta(g)), the nanofibers exhibited oxidation of the external substrates in aqueous solution and an efficient antibacterial effect when activated by simulated daylight. Adsorption of both TPPS and I(-)on the surface of AE led to the formation of more efficient I-TPPS-AE materials. Rapid photooxidation of I(-)by O-2((1)Delta(g)), and the formation of another cytotoxic species, I-3(-), on the surface of the nanofibers were responsible for the increased antibacterial properties of I-TPPS-AE and the prolonged antibacterial effect in the dark.
  • Anion exchange polystyrene nanofiber materials (AE) were prepared by electrospinning followed by two-step functionalization of the nanofiber surface by chlorosulfonic acid and ethylendiamine. The photoactive character of these materials was introduced through adsorption of the tetra-anionic 5,10,15,20-tetra-kis-(4-sulfonatophenyl) porphyrin photosensitizer (TPPS-AE) on the nanofiber surface or by encapsulation of the nonpolar 5,10,15,20-tetraphenylporphyrin photosensitizer (AE(TPP)) into the nanofibers. Anion exchange nanofiber materials with porphyrins are characterized by a high ion-exchange capacity, photo-generation of singlet oxygen O-2((1)Delta(g)), and singlet oxygen-sensitized delayed fluorescence. Due to the photogeneration of cytotoxic O-2((1)Delta(g)), the nanofibers exhibited oxidation of the external substrates in aqueous solution and an efficient antibacterial effect when activated by simulated daylight. Adsorption of both TPPS and I(-)on the surface of AE led to the formation of more efficient I-TPPS-AE materials. Rapid photooxidation of I(-)by O-2((1)Delta(g)), and the formation of another cytotoxic species, I-3(-), on the surface of the nanofibers were responsible for the increased antibacterial properties of I-TPPS-AE and the prolonged antibacterial effect in the dark. (en)
Title
  • Anion exchange nanofiber materials activated by daylight with a dual antibacterial effect
  • Anion exchange nanofiber materials activated by daylight with a dual antibacterial effect (en)
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  • Anion exchange nanofiber materials activated by daylight with a dual antibacterial effect
  • Anion exchange nanofiber materials activated by daylight with a dual antibacterial effect (en)
skos:notation
  • RIV/00216208:11310/14:10288665!RIV15-MSM-11310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GA13-12496S), S
http://linked.open...iv/cisloPeriodika
  • 9
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 3292
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11310/14:10288665
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • fibers; polymer; membranes; porphyrins; nanofabrics; superhydrophobicity; light; polystyrene; photophysical properties; singlet oxygen (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [D3F41C282902]
http://linked.open...i/riv/nazevZdroje
  • Photochemical and Photobiological Sciences
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...v/svazekPeriodika
  • 13
http://linked.open...iv/tvurceVysledku
  • Kubát, Pavel
  • Mosinger, Jiří
  • Plíštil, Lukáš
  • Henke, Petr
http://linked.open...ain/vavai/riv/wos
  • 000341296900011
issn
  • 1474-905X
number of pages
http://bibframe.org/vocab/doi
  • 10.1039/c4pp00157e
http://localhost/t...ganizacniJednotka
  • 11310
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