Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/5029
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Melo, J. Seixas de | - |
dc.contributor.author | Pina, J. | - |
dc.contributor.author | Rodrigues, L. M. | - |
dc.contributor.author | Becker, R. S. | - |
dc.date.accessioned | 2008-09-01T15:02:43Z | - |
dc.date.available | 2008-09-01T15:02:43Z | - |
dc.date.issued | 2008 | en_US |
dc.identifier.citation | Journal of Photochemistry and Photobiology A: Chemistry. 194:1 (2008) 67-75 | en_US |
dc.identifier.uri | https://hdl.handle.net/10316/5029 | - |
dc.description.abstract | A series of conjugated oligomers with rigid (fused-ring) structure, consisting in different polycyclic aromatic hydrocarbons (PAHs) possessing a single thiophene unit, here designated as arylthiophenes, were investigated in solution. For presentation clarity, the compounds were organized in two different groups. The first group includes the compounds where one, two, three and four benzene rings are added to a thiophene unit (a compound with two dibenzothiophene units was also investigated) and the second group includes those compounds where a single thiophene ring is located at different positions in a skeletal-type polyaromatic hydrocarbon (in the present case phenanthrene). The study includes a complete spectroscopic evaluation (including singlet-singlet and triplet-triplet absorption, fluorescence and phosphorescence spectra) as well as a photophysical evaluation (fluorescence, phosphorescence and triplet lifetimes together with fluorescence and triplet occupation quantum yields. With all the above, a complete set of deactivation rate constants (kF, kIC and kISC) was determined. From the fluorescence and phosphorescence spectra the energy of the lowest lying singlet and triplet states (S1 and T1) and the energy of splitting between the two states ([Delta]ES1-T1) was obtained. Semi-empirical ZINDO/S-CI calculations were performed and corroborated the nature and state order experimentally obtained. | en_US |
dc.description.uri | http://www.sciencedirect.com/science/article/B6TGY-4P7X4PJ-4/1/54746d05274422db835f8ebcc3f2a771 | en_US |
dc.format.mimetype | aplication/PDF | en |
dc.language.iso | eng | eng |
dc.rights | openAccess | eng |
dc.subject | Photochemistry | en_US |
dc.subject | Photophysics | en_US |
dc.subject | Arylthiophene | en_US |
dc.subject | Fluorescence | en_US |
dc.subject | Phosphorescence | en_US |
dc.subject | Quantum yields | en_US |
dc.subject | Oligomer | en_US |
dc.subject | Laser flash photolysis | en_US |
dc.subject | Thiophene | en_US |
dc.subject | Phenanthrene | en_US |
dc.title | A comprehensive study of the spectral and photophysical properties of arylthiophenes | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1016/j.jphotochem.2007.07.014 | - |
uc.controloAutoridade | Sim | - |
item.fulltext | Com Texto completo | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0001-9708-5079 | - |
crisitem.author.orcid | 0000-0003-1848-1167 | - |
Aparece nas coleções: | FCTUC Química - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
file3dba00bf9fb843acac8bf4d84d339598.pdf | 683.43 kB | Adobe PDF | Ver/Abrir |
Citações SCOPUSTM
14
Visto em 14/out/2024
Citações WEB OF SCIENCETM
15
Visto em 2/out/2024
Visualizações de página 50
498
Visto em 15/out/2024
Downloads 50
432
Visto em 15/out/2024
Google ScholarTM
Verificar
Altmetric
Altmetric
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.