Electrochemiluminescent Materials: Visco‐Poroelastic Electrochemiluminescence Skin with Piezo‐Ionic Effect (Adv. Mater. 29/2021)

In article number 2100321, a material platform capable of transducing mechanical stimuli into visual readout is presented by Do Hwan Kim, Moon Sung Kang, and co-workers. The electrochemiluminescent ionic materials embedded into a rubbery polymer matrix undergo visco-poroelastic response to mechanical stress, resulting in the piezoionic effect. Locally applied stress can be spatially resolved and visualized via change in the luminescence.