Mechanism and dynamics of azobenzene photoisomerization
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- Mechanism and dynamics of azobenzene photoisomerization
- Schultz, Thomas; Quenneville, J; Levine, B; Toniolo, A; Martinez, TJ; Lochbrunner, S; Schmitt, M; Shaffer, JP; Zgierski, MZ; Stolow, A
- Issue Date
- AMER CHEMICAL SOC
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.125, no.27, pp.8098 - 8099
- The excited-state dynamics of trans-azobenzene were investigated by femtosecond time-resolved photoelectron spectroscopy and ab initio molecular dynamics. Two near-degenerate ππ* 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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