Fig. 7: Applications for information encryption.
From: A chameleon AIEgen exhibiting six distinct yet tunable thermal and photoswitchable states

a Fluorescent images of different AIEgens on a thin-layer chromatography (TLC) plate. Scale bar: 1 cm. b Schematic illustration of the dip-coating of Z-CDPM on a TLC plate and the following writing, fixing, and erasing process through UV irradiation (10 s) or heating (200 °C for 10 s), and the corresponding fluorescent images. Scale bar: 5 mm. c Photographs of the developed colored “quick response code” of DPXDC. Scale bar: 5 mm. d Demonstration of a multicolor encryption system dual encryption models. The light irradiation was conducted under a UV lamp (0.12 mW/cm2) at room temperature to trigger the photoarrangement of Z-CDPM and/or DPXDC, and the annealing procedure was performed to generate DPXC from Z-CDPM and/or DPXDC. Scale bar: 5 mm.