Herein, we demonstrated that the thermal back reactivity of diarylbenzene photoswitches depended on the degree of twisting of the aryl groups. Density functional theory calculations revealed that the π-conjugation length in the transition state was the key to determining the activation free energy.
O. Fukata, D. Kitagawa, K. Mutoh and S. Kobatake, Chem. Commun., 2025, 61, 11057 DOI: 10.1039/D5CC02172C
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