Cover Feature: A Dormant Reagent Reaction‐Diffusion Method for the Generation of Co‐Fe Prussian Blue Analogue Periodic Precipitate Particle Libraries (Chem. Eur. J. 48/2023)

A reaction–diffusion system forms a library of different-size catalytically active Prussian Blue analogue (PBA) particles at each generation of the precipitation pattern. The trick to creating a library of such a highly insoluble product is to add the reactants together (uncommon in an RD system), keeping one as a “dormant” citrate complex and activating on demand with strong acid diffusion (center). More information can be found in the Research Article by B. Baytekin and co-workers (DOI: 10.1002/chem.202301261).