Triboluminescent (or mechanoluminescent) materials emit light when they are crushed, scratched, or rubbed in solid state. 1-15 Owing to the fracture-induced light emission, triboluminescent materials have been investigated as sensor materials for monitoring structural damage in solid substrate. 16, 17 Although the triboluminescent phenomenon is related to electric discharge, the exact light emission mechanism is still unknown. Various ...
![1,2-bis[4-(4-tert-butylphenoxy)phenyl]ethane-1,2-dione Structure](https://image.chemsrc.com/caspic/160/926896-66-4.png)