Phys.org June 10, 2022
Researchers in China designed an organohydrogel by constructing interpenetrating organohydrogel networks, in which naphthylamide moieties (DEAN, green-yellow emission) are introduced in hydrophilic poly(N,N-dimethylacrylamide) (PDMA) hydrogel network and anthracene units (blue emission) are copolymerized in hydrophobic polystearate methacrylate (PSMA) organogel network. UV light of 365 nm triggers the unimer–dimer transition and leads the fluorescent color of organohydrogel to change from blue to faint yellow. Photomasks store the secret information. They achieved dual encryption by combining crystallization-induced shape memory performance. According to the researchers fluorescent organohydrogel provides a new idea for fabricating smart materials with the ability of encryption–decryption…read more. Open Access TECHNICAL ARTICLEÂ
The information coding/decoding and encryption/decryption based on the fluorescent organohydrogel. Credit: NIMTE