Superhydrophilic Polystyrene Nanofiber Materials Generating O-2((1)Delta(g)): Postprocessing Surface Modifications toward Efficient Antibacterial Effect

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10288658" target="_blank" >RIV/00216208:11310/14:10288658 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/am502917w" target="_blank" >http://dx.doi.org/10.1021/am502917w</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/am502917w" target="_blank" >10.1021/am502917w</a>

Result language
angličtina
Original language name
Superhydrophilic Polystyrene Nanofiber Materials Generating O-2((1)Delta(g)): Postprocessing Surface Modifications toward Efficient Antibacterial Effect
Original language description
The surfaces of electrospun polystyrene (PS) nanofiber materials with encapsulated 1% w/w 5,10,15,20-tetraphenylporphyrin (TPP) photosensitizer were modified through sulfonation, radio frequency (RF) oxygen plasma treatment, and polydopamine coating. The nanofiber materials exhibited efficient photogeneration of singlet oxygen. The postprocessing modifications strongly increased the wettability of the pristine hydrophobic PS nanofibers without causing damage to the nanofibers, leakage of the photosensitizer, or any substantial change in the oxygen permeability of the inner bulk of the polymer nanofiber. The increase in the surface wettability yielded a significant increase in the photo-oxidation of external polar substrates and in the antibacterial activity of the nanofibers in aqueous surroundings. The results reveal the crucial role played by surface hydrophilicity/wettability in achieving the efficient photo-oxidation of a chemical substrate/biological target at the surface of a material generating O-2((1)Delta(g)) with a short diffusion length.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
<a href="/en/project/GA13-12496S" target="_blank" >GA13-12496S: Multifunctional photoactive nanofiber materials</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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