Temperature and deuteration effects on the fluorescence of benzenoid solutions

Detalhes bibliográficos
Autor(a) principal: Pereira, Licínio Chainho
Data de Publicação: 1976
Outros Autores: Ferreira, I. C., Thomaz, Marillia P. F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/59185
Resumo: Deuterium isotope substitution and temperature effects on the fluorescence of toluene and p-xylene solutions have been investigated. Values of fluorescence quantum yields were measured between -80° to 70°C for p-xylene, p-xylene d 10 , toluene and toluene- d 8 and also fluorescence decay times at room temperature. The influence of several experimental factors on the fluorescence intensity at various temperatures was investigated and corrections were applied to obtain correct quantum yields. The results are compatible with an absence of a normal deuteration effect, and are independent of temperature, for both molecules, and show the existence of a non-radiative transition from the first excited single state to the ground state.
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spelling Temperature and deuteration effects on the fluorescence of benzenoid solutionsScience & TechnologyDeuterium isotope substitution and temperature effects on the fluorescence of toluene and p-xylene solutions have been investigated. Values of fluorescence quantum yields were measured between -80° to 70°C for p-xylene, p-xylene d 10 , toluene and toluene- d 8 and also fluorescence decay times at room temperature. The influence of several experimental factors on the fluorescence intensity at various temperatures was investigated and corrections were applied to obtain correct quantum yields. The results are compatible with an absence of a normal deuteration effect, and are independent of temperature, for both molecules, and show the existence of a non-radiative transition from the first excited single state to the ground state.info:eu-repo/semantics/publishedVersionElsevier Science BVUniversidade do MinhoPereira, Licínio ChainhoFerreira, I. C.Thomaz, Marillia P. F.19761976-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/59185engPereira, L. C., Ferreira, I. C., & Thomaz, M. P. F. (1976, October). Temperature and deuteration effects on the fluorescence of benzenoid solutions. Chemical Physics Letters. Elsevier BV. http://doi.org/10.1016/0009-2614(76)80781-60009-261410.1016/0009-2614(76)80781-6https://www.sciencedirect.com/science/article/abs/pii/0009261476807816info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-09-16T01:16:25Zoai:repositorium.sdum.uminho.pt:1822/59185Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:13:51.751720Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Temperature and deuteration effects on the fluorescence of benzenoid solutions
title Temperature and deuteration effects on the fluorescence of benzenoid solutions
spellingShingle Temperature and deuteration effects on the fluorescence of benzenoid solutions
Pereira, Licínio Chainho
Science & Technology
title_short Temperature and deuteration effects on the fluorescence of benzenoid solutions
title_full Temperature and deuteration effects on the fluorescence of benzenoid solutions
title_fullStr Temperature and deuteration effects on the fluorescence of benzenoid solutions
title_full_unstemmed Temperature and deuteration effects on the fluorescence of benzenoid solutions
title_sort Temperature and deuteration effects on the fluorescence of benzenoid solutions
author Pereira, Licínio Chainho
author_facet Pereira, Licínio Chainho
Ferreira, I. C.
Thomaz, Marillia P. F.
author_role author
author2 Ferreira, I. C.
Thomaz, Marillia P. F.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Pereira, Licínio Chainho
Ferreira, I. C.
Thomaz, Marillia P. F.
dc.subject.por.fl_str_mv Science & Technology
topic Science & Technology
description Deuterium isotope substitution and temperature effects on the fluorescence of toluene and p-xylene solutions have been investigated. Values of fluorescence quantum yields were measured between -80° to 70°C for p-xylene, p-xylene d 10 , toluene and toluene- d 8 and also fluorescence decay times at room temperature. The influence of several experimental factors on the fluorescence intensity at various temperatures was investigated and corrections were applied to obtain correct quantum yields. The results are compatible with an absence of a normal deuteration effect, and are independent of temperature, for both molecules, and show the existence of a non-radiative transition from the first excited single state to the ground state.
publishDate 1976
dc.date.none.fl_str_mv 1976
1976-01-01T00:00:00Z
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 https://hdl.handle.net/1822/59185
url https://hdl.handle.net/1822/59185
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Pereira, L. C., Ferreira, I. C., & Thomaz, M. P. F. (1976, October). Temperature and deuteration effects on the fluorescence of benzenoid solutions. Chemical Physics Letters. Elsevier BV. http://doi.org/10.1016/0009-2614(76)80781-6
0009-2614
10.1016/0009-2614(76)80781-6
https://www.sciencedirect.com/science/article/abs/pii/0009261476807816
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Science BV
publisher.none.fl_str_mv Elsevier Science BV
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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