Please use this identifier to cite or link to this item:
http://hdl.handle.net/10316/5138
DC Field | Value | Language |
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dc.contributor.author | Melo, J. Seixas de | - |
dc.contributor.author | Pina, J. | - |
dc.contributor.author | Burrows, H. D. | - |
dc.contributor.author | Brocke, S. | - |
dc.contributor.author | Herzog, O. | - |
dc.contributor.author | Thorn-Csányi, E. | - |
dc.date.accessioned | 2008-09-01T15:04:36Z | - |
dc.date.available | 2008-09-01T15:04:36Z | - |
dc.date.issued | 2004 | en_US |
dc.identifier.citation | Chemical Physics Letters. 388:4-6 (2004) 236-241 | en_US |
dc.identifier.uri | http://hdl.handle.net/10316/5138 | - |
dc.description.abstract | Spectroscopic and photophysical properties of two p-phenylenevinylene (PV) trimers, 2,5-substituted diheptyl-(p-phenylenevinylene) and di-[(2-ethylhexyl)oxy]-(p-phenylenevinylene), were studied using absorption spectroscopy, fluorescence and laser flash photolysis. The change from alkyl to alkyloxy groups red-shifts the absorption and fluorescence bands. The rate of internal conversion is independent of the substitution, whereas alkyloxy substitution increases the S1 [rightwards wave arrow] T1 intersystem crossing rate by an order of magnitude. The relevance for the behaviour of conjugated PPV polymers is discussed. For diheptyl-PV, a sample having ca. 3% of the cis-configuration was also studied. Comparison between the all-trans and the cis-contaminated samples revealed no significant differences in their photophysical properties. | en_US |
dc.description.uri | http://www.sciencedirect.com/science/article/B6TFN-4C0TKVG-4/1/bb1be7e4a272bb7910483cae927d04ac | en_US |
dc.format.mimetype | aplication/PDF | en |
dc.language.iso | eng | eng |
dc.rights | openAccess | eng |
dc.title | The effect of substitution and isomeric imperfection on the photophysical behaviour of p-phenylenevinylene trimers | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1016/j.cplett.2004.02.093 | - |
uc.controloAutoridade | Sim | - |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
crisitem.author.dept | Faculdade de Ciências e Tecnologia, Universidade de Coimbra | - |
crisitem.author.dept | Faculdade de Ciências e Tecnologia, Universidade de Coimbra | - |
crisitem.author.dept | Faculdade de Ciências e Tecnologia, Universidade de Coimbra | - |
crisitem.author.parentdept | Universidade de Coimbra | - |
crisitem.author.parentdept | Universidade de Coimbra | - |
crisitem.author.parentdept | Universidade de Coimbra | - |
crisitem.author.researchunit | Coimbra Chemistry Center | - |
crisitem.author.researchunit | Coimbra Chemistry Center | - |
crisitem.author.researchunit | Coimbra Chemistry Center | - |
crisitem.author.parentresearchunit | Faculdade de Ciências e Tecnologia, Universidade de Coimbra | - |
crisitem.author.parentresearchunit | Faculdade de Ciências e Tecnologia, Universidade de Coimbra | - |
crisitem.author.parentresearchunit | Faculdade de Ciências e Tecnologia, Universidade de Coimbra | - |
crisitem.author.orcid | 0000-0001-9708-5079 | - |
crisitem.author.orcid | 0000-0003-1848-1167 | - |
crisitem.author.orcid | 0000-0003-3127-2298 | - |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
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file69066893ad2a4fa6bd329e07c35c5dc8.pdf | 291.9 kB | Adobe PDF | View/Open |
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