Inside Back Cover: Swelling‐induced Mechanochromism in Multinetwork Polymers (Angew. Chem. Int. Ed. 9/2023)

The swelling force exerted by solvents in polymer gels is revealed to trigger mechanochemical reactions, as reported Takuma Watabe and Hideyuki Otsuka their Research Article (e202216469). A multinetwork strategy based on sequential monomer polymerization processes makes the original network sensitive mechanical stimuli. slight volume expansion caused leads activation of mechanoresponsive linkers first network, exhibiting a notable color change.