Gao Zhao, Qiu Shuai, Yan Fei, Zhang Shuyi, Wang Feng, Tian Wei
Shaanxi Key Laboratory of Macromolecular Science and Technology, MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University Xi'an 710072 P. R. China
CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China Hefei Anhui 230026 P. R. China.
Chem Sci. 2021 Jul 1;12(29):10041-10047. doi: 10.1039/d1sc03105h. eCollection 2021 Jul 28.
Innovative fluorescence security technologies for paper-based information are still highly pursued nowadays because data leakage and indelibility have become serious economic and social problems. Herein, we report a novel transient bio-fluorochromic supramolecular co-assembly mediated by a hydrolytic enzyme (ALP: alkaline phosphatase) towards rewritable security printing. A co-assembly based on the designed 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 with 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 an inkjet printing technique, providing fascinating potential for fluorescence security materials with a biomimetic mode.
如今，用于纸质信息的创新型荧光安全技术仍备受追捧，因为数据泄露和不可擦除已成为严重的经济和社会问题。在此，我们报道了一种由水解酶（碱性磷酸酶，ALP）介导的新型瞬态生物荧光超分子共组装体，用于可重写安全印刷。通过添加三磷酸腺苷（ATP）作为生物燃料，倾向于形成基于设计的四分支阳离子二乙炔基蒽单体的共组装体。在碱性磷酸酶依次水解ATP并重新添加新批次的ATP后，所得的共组装体具有时间编码的生物荧光变色特性。在此基础上，利用喷墨打印技术成功地在可重写安全图案中实现了这种时间编码共组装体系的动态荧光特性，为具有仿生模式的荧光安全材料提供了迷人的潜力。
