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

dc.creatorGoncalves, P. J.
dc.creatorBarbosa Neto, N. M.
dc.creatorParra, G. G.
dc.creatorDe Boni, Leonardo
dc.creatorAggarwal, L. P. F.
dc.creatorSiqueira, J. P.
dc.creatorMisoguti, Lino
dc.creatorBorissevitch, I. E.
dc.creatorZilio, S. C.
dc.date.accessioned2013-10-14T17:21:07Z
dc.date.accessioned2018-07-04T15:58:29Z
dc.date.available2013-10-14T17:21:07Z
dc.date.available2018-07-04T15:58:29Z
dc.date.created2013-10-14T17:21:07Z
dc.date.issued2012
dc.identifierOPTICAL MATERIALS, AMSTERDAM, v. 34, n. 4, supl. 1, Part 6, pp. 741-747, FEB, 2012
dc.identifier0925-3467
dc.identifierhttp://www.producao.usp.br/handle/BDPI/34581
dc.identifier10.1016/j.optmat.2011.10.012
dc.identifierhttp://dx.doi.org/10.1016/j.optmat.2011.10.012
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1629930
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 S-1 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. (C) 2011 Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherELSEVIER SCIENCE BV
dc.publisherAMSTERDAM
dc.relationOPTICAL MATERIALS
dc.rightsCopyright ELSEVIER SCIENCE BV
dc.rightsclosedAccess
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.typeArtículos de revistas


Este ítem pertenece a la siguiente institución