Light gated reactions are important due to their spatial and temporal control over the chemical processes but long wavelength activation of photocycloaddition reactions are rare. Here the authors introduce a green light induced [2+2] cycloaddition of a halochromic system, which allows for its photo-reactivity to be switched on and off by adjusting the pH of the system.
- Kubra Kalayci
- Hendrik Frisch
- Christopher Barner-Kowollik
