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- Title
Ultrafast Dynamics of a "Super" Photobase.
- Authors
Sheng, Wei; Nairat, Muath; Pawlaczyk, Patrick D.; Mroczka, Elizabeth; Farris, Benjamin; Pines, Ehud; Geiger, James H.; Borhan, Babak; Dantus, Marcos
- Abstract
Molecular reactivity can change dramatically with the absorption of a photon due to the difference of the electronic configurations between the excited and ground states. Here we report on the discovery of a modular system (Schiff base formed from an aldehyde and an amine) that upon photoexcitation yields a more basic imine capable of intermolecular proton transfer from protic solvents. Ultrafast dynamics of the excited state conjugated Schiff base reveals the pathway for proton transfer, culminating in a 14‐unit increase in pKa to give the excited state pKa*>20 in ethanol.
- Subjects
ABSORPTION; ELECTRON configuration; SCHIFF bases; PHOTOEXCITATION; ALDEHYDES; CHEMICAL yield
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 45, p14958
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201806787