Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents

Detalhes bibliográficos
Autor(a) principal: Rodrigues, Janaina F.
Data de Publicação: 2010
Outros Autores: Silva, Francisco de Assis da, Ferreira, José Carlos Netto
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6072
Resumo: p. 960-965
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spelling Rodrigues, Janaina F.Silva, Francisco de Assis daFerreira, José Carlos NettoRodrigues, Janaina F.Silva, Francisco de Assis daFerreira, José Carlos Netto2012-06-04T19:45:08Z2012-06-04T19:45:08Z20100103-5053http://www.repositorio.ufba.br/ri/handle/ri/6072v. 21, n.6p. 960-965The photoreactivity of the triplet excited state of thioxanthone (TX) was investigated employing the laser flash photolysis technique. The wavelength for the absorption maximum and the lifetime of the triplet excited state are solvent dependent. When hydrogen donor solvents were employed, a new band at 410 nm was observed in the triplet absorption spectrum, which was attributed to the ketyl radical derived from thioxantone. Quenching rate constants, kq, ranged from (1.7 ± 0.1) × 106 L mol-1 s-1 for toluene to ca. 109 L mol-1 s-1 for phenol and its derivatives containing polar substituents, as well as for indole, triethylamine and DABCO.Submitted by Bruna Lessa (lessbruna@gmail.com) on 2012-06-04T19:45:08Z No. of bitstreams: 1 (58)v21n6a03.pdf: 282076 bytes, checksum: ee6d05e2f10354264e727100f3bd1da7 (MD5)Made available in DSpace on 2012-06-04T19:45:08Z (GMT). No. of bitstreams: 1 (58)v21n6a03.pdf: 282076 bytes, checksum: ee6d05e2f10354264e727100f3bd1da7 (MD5) Previous issue date: 2010Scielohttp://dx.doi.org/10.1590/S0103-50532010000600003reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAlaser flash photolysistioxanthonetriplet excited statesolvent effectLaser flash photolysis study of the photochemistry of thioxanthone in organic solventsJournal of the Brazilian Chemical Societyinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleenginfo:eu-repo/semantics/openAccessORIGINAL(58)v21n6a03.pdf(58)v21n6a03.pdfapplication/pdf282076https://repositorio.ufba.br/bitstream/ri/6072/1/%2858%29v21n6a03.pdfee6d05e2f10354264e727100f3bd1da7MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/6072/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT(58)v21n6a03.pdf.txt(58)v21n6a03.pdf.txtExtracted texttext/plain21434https://repositorio.ufba.br/bitstream/ri/6072/3/%2858%29v21n6a03.pdf.txtd924c999cc1b57ee47776eb4724c0a7bMD53ri/60722022-07-05 14:03:12.582oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:12Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents
dc.title.alternative.pt_BR.fl_str_mv Journal of the Brazilian Chemical Society
title Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents
spellingShingle Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents
Rodrigues, Janaina F.
laser flash photolysis
tioxanthone
triplet excited state
solvent effect
title_short Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents
title_full Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents
title_fullStr Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents
title_full_unstemmed Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents
title_sort Laser flash photolysis study of the photochemistry of thioxanthone in organic solvents
author Rodrigues, Janaina F.
author_facet Rodrigues, Janaina F.
Silva, Francisco de Assis da
Ferreira, José Carlos Netto
author_role author
author2 Silva, Francisco de Assis da
Ferreira, José Carlos Netto
author2_role author
author
dc.contributor.author.fl_str_mv Rodrigues, Janaina F.
Silva, Francisco de Assis da
Ferreira, José Carlos Netto
Rodrigues, Janaina F.
Silva, Francisco de Assis da
Ferreira, José Carlos Netto
dc.subject.por.fl_str_mv laser flash photolysis
tioxanthone
triplet excited state
solvent effect
topic laser flash photolysis
tioxanthone
triplet excited state
solvent effect
description p. 960-965
publishDate 2010
dc.date.issued.fl_str_mv 2010
dc.date.accessioned.fl_str_mv 2012-06-04T19:45:08Z
dc.date.available.fl_str_mv 2012-06-04T19:45:08Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/6072
dc.identifier.issn.none.fl_str_mv 0103-5053
dc.identifier.number.pt_BR.fl_str_mv v. 21, n.6
identifier_str_mv 0103-5053
v. 21, n.6
url http://www.repositorio.ufba.br/ri/handle/ri/6072
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Scielo
publisher.none.fl_str_mv Scielo
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1590/S0103-50532010000600003
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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