Fig. 4: Applications.
From: Photoactivated room temperature phosphorescence from lignin
a Smart anti-counterfeiting logo for medicine bottle made from PVA-Lig, PLA and PLA-Lig (activated by UV light at 0.02 mW cm-2, 20 s), scale bar = 1 cm; b Fabricating RTP images with PLA-Lig using UV activation (0.02 mW cm-2, 20 s), scale bar = 1 cm; (c) Recycling (lantern to deer) RTP images in PLA-Lig using UV activation (0.02 mW cm−2, 20 s). All the lignin concentrations in the PLA-Lig were 0.1%.
