Unveiling the excited-state cycloaddition mechanism of crystalline 9-anthracenecarboxylic acid via transient absorption spectroscopy and theoretical calculations.
Anthracene-based compounds that undergo photocycloaddition have garnered extensive attention for the fabrication of light-responsive crystalline materials. Nevertheless, their solid-state photocycloaddition mechanism remains elusive. Herein, transient absorption spectroscopy combined with theoretical calculations was e...