Photoresponsive luminescent polymeric hydrogels for reversible information encryption and decryption
| Autor: | Hongzhong Chen, Xiao Liu, Zhiqiang Li, Yanli Zhao, Xiaoli Gong, Bin Li, Yanmiao Xie, Huanrong Li |
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| Přispěvatelé: | School of Physical and Mathematical Sciences |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
Materials science Luminescence General Chemical Engineering information encryption and decryption General Physics and Astronomy Medicine (miscellaneous) 02 engineering and technology 010402 general chemistry 01 natural sciences Biochemistry Genetics and Molecular Biology (miscellaneous) chemistry.chemical_compound Photochromism Diarylethene Chemistry [Science] luminescence General Materials Science Irradiation lcsh:Science Quenching (fluorescence) business.industry Communication General Engineering tunable emission photoresponsive materials 021001 nanoscience & nanotechnology Communications 0104 chemical sciences chemistry Information Encryption and Decryption Self-healing hydrogels Optoelectronics lcsh:Q 0210 nano-technology business polymeric hydrogels Visible spectrum |
| Zdroj: | Advanced Science Advanced Science, Vol 6, Iss 21, Pp n/a-n/a (2019) |
| Popis: | Conventional luminescent information is usually visible under either ambient or UV light, hampering their potential application in smart confidential information protection. In order to address this challenge, herein, light‐triggered luminescence ON‐OFF switchable hybrid hydrogels are successfully constructed through in situ copolymerization of acrylamide, lanthanide complex, and diarylethene photochromic unit. The open‐close behavior of the diarylethene ring in the polymer could be controlled by UV and visible light irradiation, where the close form of the ring features fluorescence resonance energy transfer with the lanthanide complex. The hydrogel‐based blocks with tunable emission colors are then employed to construct 3D information codes, which can be read out under a 254 nm UV lamp. The exposure to 300 nm UV light leads to the luminescence quenching of the hydrogels, thus erasing the encoded information. Under visible light (>450 nm) irradiation, the luminescence is recovered to make the confidential information readable again. Thus, by simply alternating the exposure to UV and visible lights, the luminescence signals could become invisible and visible reversibly, allowing for reversible multiple information encryption and decryption. Light‐triggered luminescence ON‐OFF switchable hybrid hydrogels are synthesized through in situ copolymerization. The hydrogel‐based blocks with tunable emission colors are then employed to construct 3D information codes, allowing for reversible multiple information encryption and decryption. |
| Databáze: | OpenAIRE |
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