X-ray structural studies of Prussian blue analog heterostructures on poly(ethylene terephthalate) supports

► We have synthesized tri-layered heterostructures of Prussian blue analogs. ► Different solid support pretreatment bonds either cations or anions from the network. ► Films are polycrystalline having the same crystal structures as parent phases. ► Structure probes suggest bond-length deformation in mixed phase films.