Počet záznamů: 1

Singlet Oxygen Imaging in Polymeric Nanofibers by Delayed Fluorescence

SYSNO ASEP	0351766
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Singlet Oxygen Imaging in Polymeric Nanofibers by Delayed Fluorescence
Tvůrce(i)	Mosinger, J. (CZ) Lang, Kamil (UACH-T)_{SAI, RID, ORCID} Hostomský, Jiří (UACH-T) Franc, Jiří (UFCH-W) Sýkora, Jan (UFCH-W)_RID Hof, Martin (UFCH-W)_{RID, ORCID} Kubát, Pavel (UFCH-W)_{RID, ORCID, SAI}
Zdroj.dok.	Journal of Physical Chemistry B. - : American Chemical Society - ISSN 1520-6106 Roč. 114, č. 48 (2010), s. 15773-15779
Poč.str.	7 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	molecular-oxygen ; meso-tetralylporphyrins ; photodynamic therapy
Vědní obor RIV	CA - Anorganická chemie
CEP	GA203/08/0831 GA ČR - Grantová agentura ČR
	GAP208/10/1678 GA ČR - Grantová agentura ČR
CEZ	AV0Z40320502 - UACH-T (2005-2011)
	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000284738800006
DOI	10.1021/jp105789p
Anotace	Polymeric nanofiber materials loaded with photosensitizers exhibit significant antibacterial activity due to their generation of cytotoxic singlet oxygen O2(1Δg). A time-gated fluorescence imaging technique was used to monitor the photosensitized processes in polystyrene (PS) and gelatin (GE) nanofibers loaded with 0.1 wt % tetraphenylporphyrin (TPP) photosensitizer. The fluorescence decay of TPP at the periphery of the PS nanofibers was single exponential. Increased fluorescence quenching was observed in the domains with higher TPP loading, located in the center of the nanofibers, and added a shorter lifetime component to the kinetics. The domains exhibiting singlet oxygen activity within the nanofibers were visualized and analyzed by singlet oxygen-sensitized delayed fluorescence imaging (SODF). Whereas O2(1Δg) was produced in PS nanofibers, its production in GE nanofibers was limited. These results were confirmed by time-resolved phosphorescence measurements at 1270 nm.
Pracoviště	Ústav anorganické chemie
Kontakt	Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Rok sběru	2011

Počet záznamů: 1