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dc.contributor.authorSuchánek, Jan
dc.contributor.authorHenke, Petr
dc.contributor.authorMosinger, Jiří
dc.contributor.authorZelinger, Zdeněk
dc.contributor.authorKubát, Pavel
dc.date.accessioned2015-01-09T08:20:09Z
dc.date.available2015-01-09T08:20:09Z
dc.date.issued2014
dc.identifier.citationJournal of Physical Chemistry B. 2014, vol. 118, issue 23, p. 6167-6174.cs
dc.identifier.issn1520-6106
dc.identifier.urihttp://hdl.handle.net/10084/106273
dc.description.abstractElectrospun nanofibers possess large surface to volume ratios, high porosity, and good mechanical properties that are necessary for biological applications. We prepared different types of photoactive polymeric nanofiber materials with encapsulated or externally bound porphyrin photosensitizers. The kinetics of formation and the decay of both singlet oxygen O2(1Δg) and porphyrin triplet states that are generated by irradiation of nanofiber materials in an air atmosphere or in an air-saturated aqueous solution were measured and evaluated by luminescence and transient absorption spectroscopy in the temperature range between 5 and 60 °C. We found shortening of the O2(1Δg) lifetime and a significant increase in singlet oxygen-sensitized delayed fluorescence at higher temperatures. These photophysical data show an increase in the diffusion coefficient for O2(1Δg) with temperature, and they are consistent with a stronger antibacterial effect of the nanofiber material on Escherichia coli at higher temperature.cs
dc.language.isoencs
dc.publisherAmerican Chemical Societycs
dc.relation.ispartofseriesJournal of Physical Chemistry Bcs
dc.relation.urihttp://dx.doi.org/10.1021/jp5029917cs
dc.rightsCopyright © 2014 American Chemical Societycs
dc.titleEffect of temperature on photophysical properties of polymeric nanofiber materials with porphyrin photosensitizerscs
dc.typearticlecs
dc.identifier.doi10.1021/jp5029917
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.description.volume118cs
dc.description.issue23cs
dc.description.lastpage6174cs
dc.description.firstpage6167cs
dc.identifier.wos000337336400014


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