Supramolecular self-assembly of molecules into highly ordered architectures is attractive for developing various advanced functional materials. Compared to the assemblies of one single building block, supramolecular coassembly (SCA) of multiple...
Innovative fluorescence security technologies for paper-based information are still highly pursued now-adays because data leakage and indelibility have become serious economic and social problems. Herein, we report a novel transient biofluorochromic supramolecular co-assembly mediated by hydrolytic enzyme (ALP: alkaline phosphatase) towards rewritable security printing. A co-assembly based on the de-signed tetrabranched cationic diethynylanthracene monomer tends to be formed by adding adenosine triphosphate (ATP) as the biofuel. The resulting co-assembly possesses a time-encoded bio-fluorochromic feature, upon successively hydrolyzing ATP by ALP and re-adding new batches of ATP. On this basis, the dynamic fluorescent properties of this time-encoded co-assembly system have been successfully enabled in rewritable security patterns via an inkjet printing technique, providing a fascinating potential for fluorescence security materials with a biomimetic mode.
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