Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2005-05-11
Physics
Condensed Matter
Other Condensed Matter
9 pages, 5 figures. accepted to Chem. Phys. Letters (2005)
Scientific paper
In this letter we propose a model which explains ultrafast and efficient photoisomerization reactions as driven by transitions between quasistationary states of one dimensional (1D) double well potential of an excited electronic state. This adiabatic potential is formed as a result of doubly crossing of a decay diabatic potential of the ground electronic state and a bound diabatic potential of the excited state. We calculate the eigenstates and eigenfunctions using the semiclassical connection matrices at the turning and crossing points and the shift matrices between these points. The transitions between the localized in the wells below the adiabatic barrier states are realized by the tunneling and by the double non-adiabatic transitions via the crossing points processes. Surprisingly the behavior with the maximum transition rate keeps going even for the states relatively far above the barrier (2 -4 times the barrier height). Even though a specific toy model is investigated here, when properly interpreted it yields quite reasonable values for a variety of measured quantities, such as a reaction quantum yield, and conversion time.
Benderskii Alexander V.
Kats E. I.
Trommsdorff H. P.
Vetoshkin E. V.
No associations
LandOfFree
Semiclassical model of ultrafast photoisomerization reactions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Semiclassical model of ultrafast photoisomerization reactions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiclassical model of ultrafast photoisomerization reactions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-73153