Reversible Emitting Anti‐Counterfeiting Ink Prepared by Anthraquinone‐Modified β‐Cyclodextrin Supramolecular Polymer
| Autor: | Hong-Guang Fu, Lei Chen, Yu Liu, Yong Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
anthraquinone photoreduction
General Chemical Engineering General Physics and Astronomy Medicine (miscellaneous) 02 engineering and technology 010402 general chemistry Photochemistry 01 natural sciences Biochemistry Genetics and Molecular Biology (miscellaneous) Anthraquinone Supramolecular assembly chemistry.chemical_compound fluorescent anti‐counterfeiting fluorescent encryption Ultraviolet light Molecule General Materials Science lcsh:Science supramolecular assembly chemistry.chemical_classification Aqueous solution Cyclodextrin Chemistry Communication General Engineering Polymer 021001 nanoscience & nanotechnology Communications 0104 chemical sciences Supramolecular polymers cyclodextrin lcsh:Q 0210 nano-technology |
| Zdroj: | Advanced Science Advanced Science, Vol 7, Iss 14, Pp n/a-n/a (2020) |
| ISSN: | 2198-3844 |
| Popis: | Intelligent fluorescent materials have been paid more and more attention due to their wide application in information encryption and anti‐counterfeiting materials. Herein, a supramolecular polymer is constructed through the host–guest interaction of anthraquinone‐modified β‐cyclodextrin (AQ‐β‐CD) in aqueous solution. Thanks to the hydrophobic microenvironment of the cyclodextrin cavity and the shielding effect on oxygen molecules, the anthraquinone group, as the guest molecule, can rapidly produce 9,10‐anthracenediol (QH2) with strong fluorescence by photoreduction. Interestingly, the generated anthracenediol group is still sensitive to oxygen and can be converted to anthraquinone by oxygen. Significantly, aqueous solution of AQ‐β‐CD supermolecular polymer is used as emitting ink, which decrypts the information by ultraviolet light and encrypts the information in the air. Supramolecular polymers with photoreduction properties are constructed from anthraquinone‐modified β‐cyclodextrin (AQ‐β‐CD) self‐assembled in aqueous solution. Thanks to the hydrophobic microenvironment of the cyclodextrin cavity and the shielding effect on oxygen molecules, the anthraquinone group can produce 9,10‐anthracenediol with strong fluorescence by photoreduction. Moreover, the 9,10‐anthracenediol group is still sensitive to oxygen and can be converted to anthraquinone by oxygen. |
| Databáze: | OpenAIRE |
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