Fig. 5: Mechanism for tunable RTP and potential applications of the glasses.
From: Bio-sourced flexible supramolecular glasses for dynamic and full-color phosphorescence

a Schematic of clustering and hydrogen bonding in E–G glass, and mechanism for its excitation-dependent ultralong RTP. b Delayed PL spectra (delayed time: 0.1 s, 0.2 s, 0.3 s, 0.9 s) of E–G–P0.2 and E–G–P1.0 glasses. c Demonstration of advanced multi-coding data encryption using E–G and PCA-doped glasses with excitation-dependent or/and time-dependent afterglows.