Infrared to visible up-conversion in biocellulose yttrium vanadate nanoparticle composite membranes. Demonstration of chloroaluminum phthalocyanine light emission under up-converted light excitation

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorNigoghossian, Karina
dc.creatorPeres, Maristela
dc.creatorPrimo, Fernando Lucas
dc.creatorTedesco, Antonio Claudio
dc.creatorPecoraro, Édison
dc.creatorMessaddeq, Younes
dc.creatorRibeiro, Sidney José Lima
dc.date2015-05-15T13:30:23Z
dc.date2016-10-25T20:48:40Z
dc.date2015-05-15T13:30:23Z
dc.date2016-10-25T20:48:40Z
dc.date2014
dc.date.accessioned2017-04-06T08:17:03Z
dc.date.available2017-04-06T08:17:03Z
dc.identifierColloids and Interface Science Communications, v. 2, p. 6-10, 2014.
dc.identifier2215-0382
dc.identifierhttp://hdl.handle.net/11449/123543
dc.identifierhttp://acervodigital.unesp.br/handle/11449/123543
dc.identifierhttp://dx.doi.org/10.1016/j.colcom.2014.08.001
dc.identifierISSN2215-0382-2014-02-06-10.pdf
dc.identifier0528258491277437
dc.identifier2998503841917815
dc.identifier6446047463034654
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S2215038214000181
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/934154
dc.descriptionYVO4:(Yb3 +–Er3 +/Ho3 +) nanoparticles were incorporated in biocellulose membranes obtained from Gluconacetobacter xylinus. Materials present the property of converting near-infrared (NIR) into higher-energy visible light. Nanoparticles were prepared by optimizing towards higher emission intensity at the absorption wavelength range of chloroaluminum phthalocyanine (ClAlPc) used as a photosensitizer in the photodynamic therapy. The NIR excitation wavelength is advantageous for biological applications, as it allows deeper penetration into tissues than the UV–visible radiation commonly used for luminescence excitation. Up-conversion emission spectra obtained under excitation at 980 nm showed a preferential green emission for the Yb3 +–Er3 + system and a red emission for the Yb3 +–Ho3 + one. In the last case, by using mixtures of nanoparticles and ClAlPc the red emission (680 nm) of the phtalocyanine was observed through excitation by the up-converted emission of the nanoparticles (650 nm) which were excited in NIR (980 nm).
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageeng
dc.relationColloids and Interface Science Communications
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectUp-conversion
dc.subjectBiocellulose
dc.subjectChloroaluminum phthalocyanine
dc.subjectYttrium vanadate nanoparticles
dc.subjectLanthanide ions
dc.subjectPhotodynamic therapy
dc.subjectPhotosensitizers
dc.subjectDrug delivery systems
dc.subjectbiomaterials
dc.subjectcomposite membranes
dc.titleInfrared to visible up-conversion in biocellulose yttrium vanadate nanoparticle composite membranes. Demonstration of chloroaluminum phthalocyanine light emission under up-converted light excitation
dc.typeOtro


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