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Fluorescent polyurethane nanofabrics: A source of singlet oxygen and oxygen sensing

SYSNO ASEP	0349546
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Fluorescent polyurethane nanofabrics: A source of singlet oxygen and oxygen sensing
Author(s)	Mosinger, J. (CZ) Lang, Kamil (UACH-T)_{SAI, RID, ORCID} Plištil, L. (CZ) Jesenská, S. (CZ) Hostomský, Jiří (UACH-T) Zelinger, Zdeněk (UFCH-W)_{RID, ORCID} Kubát, Pavel (UFCH-W)_{RID, ORCID, SAI}
Source Title	Langmuir. - : American Chemical Society - ISSN 0743-7463 Roč. 26, č. 12 (2010), s. 10050-10056
Number of pages	7 s.
Language	eng - English
Country	US - United States
Keywords	sensitized delayed fluorescence ; molecular-oxygen ; photophysical properties
Subject RIV	CA - Inorganic Chemistry
R&D Projects	GA203/08/0831 GA ČR - Czech Science Foundation (CSF)
	GAP208/10/1678 GA ČR - Czech Science Foundation (CSF)
	GAP207/10/1447 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z40320502 - UACH-T (2005-2011)
	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000278427600119
DOI	10.1021/la1001607
Annotation	Polyurethane (PUR) nanofabrics based on nanofibers of average diameters in the range of 250-110 nm with different meso-tetraphenylporphyrin (TPP) loading (0.01-5 wt %) were prepared by an electrospinning process. The oxygen quenching of excited states and singlet oxygen-sensitized delayed fluorescence (SODF) of TPP were studied at different oxygen pressures. We found that TPP in PUR matrix is present in monomeric state, and it is easily accessed by oxygen. Analysis of the kinetics of the TPP triplet, singlet oxygen, and SODF indicates that repopulation of TPP fluorescent state includes reaction of singlet oxygen with TPP triplets. The integrated SODF achieved more than 20% of the prompt fluorescence for nanofabric loaded with 5 wt % TPP. The dependence of SODF intensity on the TPP concentration in nanofibers is nearly quadratic.
Workplace	Institute of Inorganic Chemistry
Contact	Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Year of Publishing	2011

Number of the records: 1