About: Effect of Temperature on Photophysical Properties of Polymeric Nanofiber Materials with Porphyrin Photosensitizers

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Effect of Temperature on Photophysical Properties of Polymeric Nanofiber Materials with Porphyrin Photosensitizers Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1021/jp5029917
Description	Electrospun 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 O-2((1)Delta(g)) 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 degrees C. We found shortening of the O-2((1)Delta(g)) 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 O-2((1)Delta(g)) with temperature, and they are consistent with a stronger antibacterial effect of the nanofiber material on Escherichia coli at higher temperature. Electrospun 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 O-2((1)Delta(g)) 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 degrees C. We found shortening of the O-2((1)Delta(g)) 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 O-2((1)Delta(g)) with temperature, and they are consistent with a stronger antibacterial effect of the nanofiber material on Escherichia coli at higher temperature. (en)
Title	Effect of Temperature on Photophysical Properties of Polymeric Nanofiber Materials with Porphyrin Photosensitizers Effect of Temperature on Photophysical Properties of Polymeric Nanofiber Materials with Porphyrin Photosensitizers (en)
skos:prefLabel	Effect of Temperature on Photophysical Properties of Polymeric Nanofiber Materials with Porphyrin Photosensitizers Effect of Temperature on Photophysical Properties of Polymeric Nanofiber Materials with Porphyrin Photosensitizers (en)
skos:notation	RIV/00216208:11310/14:10288675!RIV15-MSM-11310___
http://linked.open...avai/riv/aktivita	I P S V
http://linked.open...avai/riv/aktivity	I, P(GA13-12496S), S, V
http://linked.open...iv/cisloPeriodika	23
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Henke, Petr Mosinger, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	13536
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/14:10288675
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	bacteria; dependence; nanofabrics; polyurethane; polystyrene; light; delayed fluorescence; electrospun nanofibers; escherichia-coli; singlet molecular-oxygen (en)
http://linked.open.../riv/klicoveSlovo	delayed fluorescence singlet molecular-oxygen escherichia-coli bacteria dependence light electrospun nanofibers nanofabrics polyurethane polystyrene
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[0F12664B05A0]
http://linked.open...i/riv/nazevZdroje	Journal of Physical Chemistry B
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Multifunctional photoactive nanofiber materials
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	118
http://linked.open...iv/tvurceVysledku	Kubát, Pavel Mosinger, Jiří Zelinger, Zdeněk Suchánek, Jan Henke, Petr
http://linked.open...ain/vavai/riv/wos	000337336400014
issn	1520-6106
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1021/jp5029917
http://localhost/t...ganizacniJednotka	11310

Faceted Search & Find service v1.16.118 as of Jun 21 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 117 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software