J. Léonard and I. Schapiro contributed equally to the work.
Cover Picture: Mechanistic Origin of the Vibrational Coherence Accompanying the Photoreaction of Biomimetic Molecular Switches (Chem. Eur. J. 48/2012)
Article first published online: 19 NOV 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Chemistry - A European Journal
Volume 18, Issue 48, page 15209, November 26, 2012
How to Cite
Léonard, J., Schapiro, I., Briand, J., Fusi, S., Paccani, R. R., Olivucci, M. and Haacke, S. (2012), Cover Picture: Mechanistic Origin of the Vibrational Coherence Accompanying the Photoreaction of Biomimetic Molecular Switches (Chem. Eur. J. 48/2012). Chem. Eur. J., 18: 15209. doi: 10.1002/chem.201290204
- Issue published online: 19 NOV 2012
- Article first published online: 19 NOV 2012
- ab initio calculations;
- conical intersections;
- molecular dynamics;
- time- resolved spectroscopy
Coherent photoisomerization is a rare, ultrafast process in which the photon energy activates a selected set of reactive vibrational modes, thus ensuring efficient photomechanical energy conversion. In their Full Paper on page 15296 ff., M. Olivucci, S. Haacke et al. combine experimental and theoretical approaches to investigate this process in a model molecular switch. Transient absorption reveals signatures of a quantum vibrational wave packet that drives the molecular motion from the electronic excited S1 to the ground S0 states, thus mimicking energy conversion in rhodopsin. Pronounced out-of-plane motions are predicted to modulate the π-orbital overlap across the twisted CC bond after decay to S0, and are held responsible for the observed oscillations.