Mechanism and Dynamics of Azobenzene Photoisomerization
Journal of the American Chemical Society2003Vol. 125(27), pp. 8098–8099
Citations Over TimeTop 10% of 2003 papers
Thomas Schultz, Jason Quenneville, Benjamin G. Levine, Alessandro Toniolo, Todd J. Martı́nez, Stefan Lochbrunner, Michael Schmitt, James P. Shaffer, Marek Z. Zgierski, Albert Stolow
Abstract
The excited-state dynamics of trans-azobenzene were investigated by femtosecond time-resolved photoelectron spectroscopy and ab initio molecular dynamics. Two near-degenerate pipi* excited states, S2 and S3,4, were identified in a region hitherto associated with only one excited state. These results help to explain contradictory reports about the photoisomerization mechanism and the wavelength dependence of the quantum yield. A new model for the isomerization mechanism is proposed.
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