AI Article Synopsis
- Rewritable luminescent paper is designed to address high paper usage and confidential info security by using unique organic manganese halides that change luminescence based on humidity.
- The paper can switch between luminescent and non-luminescent states when exposed to moisture and dry conditions, allowing it to function as a humidity sensor and enabling "write-erase-write" cycles with easy cleaning through heating.
- This technology enhances security features such as anti-counterfeiting and data protection, showcasing the benefits of using dynamic manganese halides in advanced printing and storage solutions.
Article Abstract
Rewritable luminescent paper is particularly crucial, considering the ultrahigh paper consumption and confidential information security, but a highly desirable stimuli-responsive smart luminescent material with excellent water solubility has rarely been studied. Herein, a new type of rewritable paper made by highly efficient green light emissive zero-dimensional (0D) organic manganese halides is rationally designed by virtue of the reversible photoluminescence (PL) off-on switching. Specifically, the green emission can be linearly quenched by water vapor in a wide humidity range and again recovered in a dry atmosphere, which make it a smart hydrochromic PL off-on switching and humidity sensor. Benefiting from the reversible luminescence off-on switch and excellent water solubility, rewritable luminescent paper is realized through water-jet security printing technology on 0D halide-coated commercial paper with high resolution. The printed/written information can be easily cleaned by slight heating with outstanding "write-erase-write" cycle capabilities. In addition, multiple light source-induced coincident green light emissions further provide convenience to realize anti-counterfeiting, encryption and decryption of confidential information, and so forth. This work highlights the superiority of dynamic ionic-bonded 0D organic manganese halides as reversible PL switching materials in rewritable luminescent paper, high-security-level information printing, storage and protection technologies, and so forth.
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| http://dx.doi.org/10.1021/acsami.2c18363 | DOI Listing |
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