Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  The Primary Photochemistry of Vision Occurs at the Molecular Speed Limit

Johnson, P. J. M., Farag, M., Halpin, A., Morizumi, T., Prokhorenko, V., Knoester, J., et al. (2017). The Primary Photochemistry of Vision Occurs at the Molecular Speed Limit. The Journal of Physical Chemistry B, 121(16), 4040-4047. doi:10.1021/acs.jpcb.7b02329.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Dateien

einblenden: Dateien
ausblenden: Dateien
:
acs.jpcb.7b02329.pdf (Verlagsversion), 4MB
 
Datei-Permalink:
-
Name:
acs.jpcb.7b02329.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Privat
MIME-Typ / Prüfsumme:
application/pdf
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:
ausblenden:
externe Referenz:
https://dx.doi.org/10.1021/acs.jpcb.7b02329 (Verlagsversion)
Beschreibung:
-
OA-Status:

Urheber

einblenden:
ausblenden:
 Urheber:
Johnson, Philip J. M.1, Autor
Farag, Marwa2, 3, Autor           
Halpin, Alexei1, Autor
Morizumi, Takefumi4, Autor
Prokhorenko, Valentyn2, Autor           
Knoester, Jasper3, Autor
Jansen, Thomas L. C.3, Autor
Ernst, Oliver P.4, 5, Autor
Miller, R. J. Dwayne1, 2, Autor           
Affiliations:
1Departments of Chemistry & Physics, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, ou_persistent22              
2Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
3Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands, ou_persistent22              
4Department of Biochemistry, University of Toronto, 1 King’s College Circle, Toronto, Ontario M5S 1A8, Canada, ou_persistent22              
5Department of Molecular Genetics, University of Toronto, 1 King’s College Circle, Toronto, Ontario M5S 1A8, Canada, ou_persistent22              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Ultrafast photochemical reactions are initiated by vibronic transitions from the reactant ground state to the excited potential energy surface, directly populating excited-state vibrational modes. The primary photochemical reaction of vision, the isomerization of retinal in the protein rhodopsin, is known to be a vibrationally coherent reaction, but the Franck–Condon factors responsible for initiating the process have been difficult to resolve with conventional time-resolved spectroscopies. Here we employ experimental and theoretical 2D photon echo spectroscopy to directly resolve for the first time the Franck–Condon factors that initiate isomerization on the excited potential energy surface and track the reaction dynamics. The spectral dynamics reveal vibrationally coherent isomerization occurring on the fastest possible time scale, that of a single period of the local torsional reaction coordinate. We successfully model this process as coherent wavepacket motion through a conical intersection on a ∼30 fs time scale, confirming the reaction coordinate as a local torsional coordinate with a frequency of ∼570 cm–1. As a result of spectral features being spread out along two frequency coordinates, we unambiguously assign reactant and product states following passage through the conical intersection, which reveal the key vibronic transitions that initiate the vibrationally coherent photochemistry of vision.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2017-03-292017-03-112017-03-302017-04-27
 Publikationsstatus: Erschienen
 Seiten: 8
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/acs.jpcb.7b02329
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: The Journal of Physical Chemistry B
  Kurztitel : J. Phys. Chem. B
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Washington, D.C. : American Chemical Society
Seiten: - Band / Heft: 121 (16) Artikelnummer: - Start- / Endseite: 4040 - 4047 Identifikator: ISSN: 1520-6106
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000293370_1