Between the Sheets: Postsynthetic Transformations in Hybrid Perovskites

Hybrid perovskites combine the optical and electronic versatility of ionic inorganic solids with the synthetic diversity and tunability of covalent organic molecules. Their multicomponent, crystalline architectures, incorporating a wide array of metals, ligands, and organic molecules, can be synthetically fine-tuned to accommodate diverse target technologies. In this Perspective, we highlight how the utility of hybrid perovskites can be further extended through chemical and physical postsynthetic transformations, with an emphasis on the design of functional solids. We describe strategies that we and other researchers have developed for using the parent perovskite to direct the structure or morphology of the product. We further show how the perovskite structure provides a unique reaction vessel for performing chemical transformations that cannot be accessed through conventional methods. We hope this Perspective motivates both organic and inorganic chemists to further expand the versatility of these technologically important hybrids, whose physical and electronic properties are highly amenable to synthetic design.