title: Photofunctional polyurethane nanofabrics doped by zinc tetraphenylporphyrin and zinc phthalocyanine photosensitizers.
abstract: Polymeric polyurethane nanofabrics doped by zinc tetraphenylporphyrin (ZnTPP) and/or zinc phthalocyanine (ZnPc) photosensitizers were prepared by the electrospinning method and characterized by microscopic methods, steady-state and time-resolved fluorescence, and absorption spectroscopy. Nanofabrics doped by both ZnTPP and ZnPc efficiently harvest visible light to generate triplet states and singlet oxygen O2(1Delta(g)) with a lifetime of about 15 micros in air atmosphere. The energy transfer between the excited singlet states of ZnTPP and ground states of ZnPc is described in details. All nanofabrics have bactericidal surfaces and photooxidize inorganic and organic substrates. ZnTPP and ZnPc in the polyurethane nanofabrics are less photostable than incorporated free-base tetraphenylporphyrin (TPP).
authors.affiliation: Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Praha 2, Czech Republic. mosinger@natur.cuni.cz
authors.forename: Jirí
authors.initials: J
authors.lastname: Mosinger
authors.forename: Kamil
authors.initials: K
authors.lastname: Lang
authors.forename: Pavel
authors.initials: P
authors.lastname: Kubát
authors.forename: Jan
authors.initials: J
authors.lastname: Sýkora
authors.forename: Martin
authors.initials: M
authors.lastname: Hof
authors.forename: Lukás
authors.initials: L
authors.lastname: Plístil
authors.forename: Bedrich
authors.initials: B
authors.lastname: Mosinger
mesh_terms: D007211:Indoles / Q000737:chemistry*; D054833:Isoindoles; D008665:Metalloporphyrins / Q000737:chemistry*; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D010316:Particle Size; D010777:Photochemistry; D017319:Photosensitizing Agents / Q000737:chemistry*; D011140:Polyurethanes / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013499:Surface Properties; D013997:Time Factors; D017967:Zinc Compounds
chemical_list: D007211:Indoles; D054833:Isoindoles; D008665:Metalloporphyrins; D009942:Organometallic Compounds; D017319:Photosensitizing Agents; D011140:Polyurethanes; D017967:Zinc Compounds; C052159:Zn(II)-phthalocyanine; C048955:zinc tetraphenylporphyrin; D010100:Oxygen