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Effect of the size of polycyclic aryl groups on the competition between adiabatic/diabatic photoisomerization mechanisms of cis-styrylarenes

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Abstract

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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  1. Department of Chemistry, Biology and Biotechnology and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, via Elce di Sotto 8, 06123, Perugia, Italy

    A. Cesaretti, B. Carlotti, F. Elisei & A. Spalletti

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  1. A. Cesaretti
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Dedicated to the memory of Prof. Ugo Mazzucato.

Electronic supplementary information (ESI) available. See DOI: 10.1039/c9pp00009g

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Cesaretti, A., Carlotti, B., Elisei, F. et al. Effect of the size of polycyclic aryl groups on the competition between adiabatic/diabatic photoisomerization mechanisms of cis-styrylarenes. Photochem Photobiol Sci 18, 2125–2135 (2019). https://doi.org/10.1039/c9pp00009g

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