Titelbild: Leveraging Crystalline and Amorphous States of a Metal‐Organic Complex for Transformation of the Photosalient Effect and Positive‐Negative Photochromism (Angew. Chem. 11/2023)

Alternations of crystalline and amorphous states largely influence the solid-state properties molecular materials. In their Research Article (e202217054), Dongpeng Yan co-workers show that transformation between two an anthracene-based metal-organic complex can tune photosalient effect, mechanical luminescence, photochromism behavior. The effect was assigned to competitive chemical routes a photocycloaddition reaction in state photogenerated radicals state. Covalent Organic Frameworks Batteries Hydrogels Nanozymes