| DOI | Resolve DOI: https://doi.org/10.1139/v99-060 |
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| Author | Search for: Brancaleon, Lorenzo1; Search for: Brousmiche, Darryl1; Search for: Johnston, Linda J.1 |
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| Affiliation | - National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
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| Format | Text, Article |
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| Subject | photoinduced electron transfer, laser flash photolysis, fluorescence, photosensitizers |
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| Abstract | The electron transfer photochemistry of 2,3-dicyanonaphthalene has been studied by a combination of fluorescence and transient absorption spectroscopy. The singlet excited state has a lifetime of 26 ns in acetonitrile and reacts with aromatic and alkene donors with oxidation potentials less than ~1.8 V with rate constants that are close to the diffusion-controlled limit. Transient absorption measurements demonstrate that the fluorescence quenching leads to efficient formation of free-radical ions. The radical ion yields have been measured for several donors and are compared to those for the more commonly used sensitizer, 1.4-dicyanonaphthalene. In the absence of added donors, direct excitation of 2,3-dicyanonaphthalene provides evidence for photoionization at high laser energy, in addition to triplet formation. The results illustrate the utility of this sensitizer for photoinduced electron transfer reactions. |
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| Publication date | 1999-06 |
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| In | |
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| Language | English |
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| NRC number | NRCC 42174 |
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| NPARC number | 12329038 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 30cb24fa-01c8-42a5-b7cb-6cd03962dded |
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| Record created | 2009-09-10 |
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| Record modified | 2020-03-20 |
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