Probing the Influence of Defects, Hydration, and Composition on Prussian Blue Analogues with Pressure.

ABSTRACT: The vast compositional space of Prussian blue analogues (PBAs), formula A_xM[M'(CN)₆]_y·nH₂O, allows for a diverse range of functionality. Yet, the interplay between composition and physical properties-e.g., flexibility and propensity for phase transitions-is still largely unknown, despite its fundamental and industrial relevance. Here we use variable-pressure X-ray and neutron diffraction to explore how key structural features, i.e., defects, hydration, and composition, influence the compressibility and phase behavior of PBAs. Defects enhance the flexibility, manifesting as a remarkably low bulk modulus (B₀ ≈ 6 GPa) for defective PBAs. Interstitial water increases B₀ and enables a pressure-i

SUBMITTER: Bostrom HLB 

PROVIDER: S-EPMC8028041 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature