Proton transfer with a twist? Femtosecond Dynamics of 7-(2-pyridyl)indole in Condensed Phase and in Supersonic Jets

Proton transfer with a twist? Femtosecond Dynamics of 7-(2-pyridyl)indole in Condensed Phase and in Supersonic Jets

Twist‐assisted proton transfer: Excited‐state intramolecular proton transfer (ESIPT) in 7‐(2‐pyridyl)indole proceeds in a barrierless fashion and is coupled with mutual twisting of the pyridine and indole moieties. As a result, the reaction is slower in a condensed phase than in the supersonic jet‐i...

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Veröffentlicht in:Angewandte Chemie (International ed.) 2008-07, Vol.47 (32), p.6037-6040
Hauptverfasser: Nosenko, Y, Wiosna-Sałyga, G, Kunitski, M, Petkova, I, Singh, A, Buma, W.J, Thummel, R.P, Brutschy, B, Waluk, J
Format: Artikel
Sprache:eng
Schlagworte:
conical intersection
excited state proton transfer
femtochemistry
photochemistry
tautomerism
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Zusammenfassung:Twist‐assisted proton transfer: Excited‐state intramolecular proton transfer (ESIPT) in 7‐(2‐pyridyl)indole proceeds in a barrierless fashion and is coupled with mutual twisting of the pyridine and indole moieties. As a result, the reaction is slower in a condensed phase than in the supersonic jet‐isolated molecule (1 ps vs. about 300 fs). Ultrafast radiationless deactivation of the phototautomer occurs via a conical intersection (CI).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200801350