Femtosecond laser selective intramolecular double proton transfer in [2,2'-bipyridyl]-3,3'-diol
| Authors |
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| Publication date |
1998
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| Journal |
Chemical Physics Letters
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| Volume | Issue number |
289 | 5-6
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| Pages (from-to) |
535-540
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| Organisations |
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Faculty of Science (FNWI) - Van 't Hoff Institute for Molecular Sciences (HIMS)
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| Abstract |
We report an excitation energy dependence of the dynamics of the excited-state intramolecular double-proton transfer of [2,2'-bipyridyl]-3,3'-diol in liquid solution. By means of femtosecond fluorescence upconversion experiments it is shown that an increase of the vibrational energy in the excited electronic S-1 state results in an increase of the ratio of the reaction yields of the monoketo and diketo tautomeric products. The dominance of the concerted double-proton transfer process at the lower excitation energies is evidence for an energy barrier in the dienol-monoketo reaction pathway.
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| Document type |
Article
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| Published at |
https://doi.org/10.1016/S0009-2614(98)00426-6
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