In Research Article e9082267, F. Arcudi, A. Aliprandi, and co-workers show a platinum(II) system in which supramolecular organization dictates catalytic function. An orange-emissive aggregate is maintained in an out-of-equilibrium state as it acts as a photocatalyst for hydrogen evolution. Photocatalysis sustains the active state; without it, the system irreversibly relaxes to a thermodynamically stable, blue-emissive catalytically inactive form. Artwork by David Lauenberger.
Pelorosso et al. (Thu,) studied this question.