Abstract
The practical application of mechanoluminescent luminophores has been severely limited by random crystal collapse because it would break down the quantitative relationship between pressure and brightness. In this issue of Matter, Li and co-workers designed a pure organic mechanoluminescent material, tPE-2-Th, by taking advantage of thiophene rings, which endow the molecule with a new equilibrium of orderly molecular arrangement upon force stimuli. tPE-2-Th demonstrates an unusual stable quantitative relationship between pressure and emission intensity. This enables the development of various flexible and wearable devices, which assist information conversion and storage for encrypted communication; sense external force changes for patient care; and detect weak forces such as the human heartbeat for health monitoring.
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