An Ir3L2 complex with anion binding pockets: photocatalytic E-Z isomerization via molecular recognition.

A molecular host with photosensitizing centers provides photo-responsive host-guest properties based on its molecular recognition ability. Here, we construct a self-assembled photoactive Ir(iii) cage-shaped complex that contains anion binding pockets on its rim. The anion recognition ability of the complex enables efficient catalysis of the visible-light-induced E-Z isomerization of an anionic styrene derivative.