Cover Feature: Mechanical Bond Induced Enhancement and Purification of Pyrene Emission in the Solid State (Chem. Eur. J. 42/2024)

Pyrene is a well‐known excellent organic luminescent molecule, but it suffers from π–π stacking‐induced aggregation‐caused quenching (ACQ) in the solid state. In our study, the encapsulation of a crown ether can significantly enhance the fluorescence of the pyrene in the solid state, resulting in a transformation from ACQ to aggregation‐induced emission (AIE). Moreover, we also found that the original impure emission of the pyrene could be purified to a single emission. More information can be found in the Research Article by Q. Li and co‐workers (DOI: 10.1002/chem.202400741).