Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/10282
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Pineiro, Marta | - |
dc.contributor.author | Gonçalves, A. M. d'A. Rocha | - |
dc.contributor.author | Pereira, Mariette M. | - |
dc.contributor.author | Formosinho, Sebastião J. | - |
dc.contributor.author | Arnaut, Luís G. | - |
dc.date.accessioned | 2009-06-23T14:23:55Z | - |
dc.date.available | 2009-06-23T14:23:55Z | - |
dc.date.issued | 2002-04-18 | - |
dc.identifier.citation | The Journal of Physical Chemistry A. 106:15 (2002) 3787-3795 | en_US |
dc.identifier.issn | 1089-5639 | - |
dc.identifier.uri | https://hdl.handle.net/10316/10282 | - |
dc.description.abstract | Halogenated phenylbacteriochlorins are synthesized with high yields in a two-step procedure. They have strong absorbances in the red and are very stable to air and light at room temperature. Flash photolysis measurements show that the triplet states of these bacteriochlorins have 30 μs lifetimes in deaerated toluene, that are quenched with diffusion-controlled rate constants by molecular oxygen. Time-resolved photoacoustic measurements, with nanosecond and nanocalorie resolution, show that these bacteriochlorins sensitize the formation of singlet oxygen with nearly unity quantum yield. However, singlet-oxygen phosphorescence measurements indicate that physical quenching occurs before the singlet-oxygen molecules diffuse into solution, and nearly half of the sensitized singlet states are lost. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Chemical Society | en_US |
dc.rights | openAccess | eng |
dc.title | New Halogenated Phenylbacteriochlorins and Their Efficiency in Singlet-Oxygen Sensitization | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1021/jp013678p | - |
uc.controloAutoridade | Sim | - |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.dept | Faculty of Sciences and Technology | - |
crisitem.author.parentdept | University of Coimbra | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
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.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0002-7460-3758 | - |
crisitem.author.orcid | 0000-0003-4958-7677 | - |
crisitem.author.orcid | 0000-0001-6607-0026 | - |
crisitem.author.orcid | 0000-0002-3223-4819 | - |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
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New Halogenated Phenylbacteriochlorins and Their Efficiency in Singlet-Oxygen.pdf | 127.15 kB | Adobe PDF | View/Open |
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