Excited-state dynamics of meso-tetrakis(sulfonatophenyl) porphyrin J-aggregates

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dc.creatorGoncalves, Pablo José
dc.creatorBarbosa Neto, Newton Martins
dc.creatorParra, Gustavo Gimenez
dc.creatorDe Boni, Leonardo
dc.creatorFerreira, Lucimara Perpetua
dc.creatorSiqueira, Jonathas de Paula
dc.creatorMisoguti, Lino
dc.creatorBorissevitch, Iouri
dc.creatorZilio, Sérgio Carlos
dc.date.accessioned2024-07-08T13:31:38Z
dc.date.available2024-07-08T13:31:38Z
dc.date.issued2012
dc.description.abstractThe excited-state dynamics of free-base meso-tetrakis(sulfonatophenyl) porphyrin J-aggregates obtained by the Z-scan technique in femto- and picosecond time scales, along with UV–Vis spectroscopy and flash photolysis is reported. Besides obtaining the S1 state lifetime, the discrimination between internal conversion and intersystem crossing nonradiative processes from that state was also possible, and their rates and respective quantum yields were found. The aggregates present reverse saturable absorption at 532 nm for both singlet and triplet excited states. The data shown is important for several applications such as optical limiting, photodynamic therapy and others.
dc.identifier.citationGONÇALVES, P. J. et al. Excited-state dynamics of meso-tetrakis(sulfonatophenyl) porphyrin J-aggregates. Optical Materials, Amsterdam, v. 34, p. 741-747, 2012. DOI: 10.1016/j.optmat.2011.10.012. Disponível em: https://www.sciencedirect.com/science/article/pii/S0925346711005052. Acesso em: 3 jul. 2024.
dc.identifier.doi10.1016/j.optmat.2011.10.012
dc.identifier.issn0925-3467
dc.identifier.issne- 1873-1252
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0925346711005052
dc.language.isoeng
dc.publisher.countryHolanda
dc.publisher.departmentInstituto de Física - IF (RMG)
dc.rightsAcesso Restrito
dc.subjectExcited states
dc.subjectNonlinear absorption
dc.subjectZ-scan
dc.subjectAggregation
dc.subjectTriplet quantum yield
dc.titleExcited-state dynamics of meso-tetrakis(sulfonatophenyl) porphyrin J-aggregates
dc.typeArtigo

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