Fig. 2From: Exploring the Intrinsic Piezofluorochromic Mechanism of TPE-An by STS Technique a Normalized PL spectra of TPE-An sample before and after grinding. b The curve of the grinding time versus the PL peak of TPE-An. The inset gives the emission image of TPE-An samples before and after pressing (1200 s), respectivelyBack to article page