Počet záznamů: 1

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

SYSNO ASEP	0349546
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Fluorescent polyurethane nanofabrics: A source of singlet oxygen and oxygen sensing
Tvůrce(i)	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}
Zdroj.dok.	Langmuir. - : American Chemical Society - ISSN 0743-7463 Roč. 26, č. 12 (2010), s. 10050-10056
Poč.str.	7 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	sensitized delayed fluorescence ; molecular-oxygen ; photophysical properties
Vědní obor RIV	CA - Anorganická chemie
CEP	GA203/08/0831 GA ČR - Grantová agentura ČR
	GAP208/10/1678 GA ČR - Grantová agentura ČR
	GAP207/10/1447 GA ČR - Grantová agentura ČR
CEZ	AV0Z40320502 - UACH-T (2005-2011)
	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000278427600119
DOI	10.1021/la1001607
Anotace	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.
Pracoviště	Ústav anorganické chemie
Kontakt	Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Rok sběru	2011

Počet záznamů: 1