Effect of the size of polycyclic aryl groups on the competition between adiabatic/diabatic photoisomerization mechanisms of cis-styrylarenes
2019
The occurrence of adiabatic photoisomerization in the singlet manifold directly from 1Z* to 1E* has been found to be more common than expected. This mechanism has been experimentally evidenced through a detailed fluorimetric study for a large series of styrylarenes. Its weight on the overall cis–trans photoisomerization has been determined and found to increase when increasing the size of the polycyclic chromophore.
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