The author of 《Smart Responsive Luminescent Aptamer-Functionalized Covalent Organic Framework Hydrogel for High-Resolution Visualization and Security Protection of Latent Fingerprints》 were Hai, Jun; Wang, Hao; Sun, Panpan; Li, Tianrong; Lu, Siyu; Zhao, Yang; Wang, Baodui. And the article was published in ACS Applied Materials & Interfaces in 2019. Synthetic Route of C12H13N3 The author mentioned the following in the article:
Covalent organic frameworks (COFs) have been proposed as alternative candidates for “”smart”” materials due to its ordered π-columnar structures. However, it remains a challenge to develop external-stimuli-responsive luminescent COFs for confidential information protection. Here we have designed and synthesized a water-dispersible and smart responsive luminescent CM-cellulose (CMC)-COF-LZU1 hydrogel with encapsulated 5-(Dimethylamino)-N,N-bis (pyridin-2-ylmethyl) naphthalene-1-sulfonamide (DPYNS), named CMC-COF-LZU1⊃DPYNS, for LFP imaging and encryption. We show that the fluorescence of CMC-COF-LZU1⊃DPYNS is reversibly switchable upon addition of Cu2+/H2O. This effect endows potential applications of tunable luminescent COFs based hydrogel as an invisible security probe for imaging, record, storage, and security of latent fingerprint information. It is shown that the latent fingerprint information incubated by the CMC-COF-LZU1⊃DPYNS hydrogel is invisible in the presence of Cu2+, but three levels of fingerprint features with high-resolution patterns can be readable upon addition of H2O under UV light. The design strategy provides a promising platform for the development of smart responsive luminescent COFs and their detection and protection of valuable LFP information. The results came from multiple reactions, including the reaction of Bis(pyridin-2-ylmethyl)amine(cas: 1539-42-0Synthetic Route of C12H13N3)
Bis(pyridin-2-ylmethyl)amine(cas: 1539-42-0) is a secondary amine with two picolyl substituents. As a tridentate ligand this compound provides three nitrogen donors that affords good selectivity for Zn2+ over biologically relevant metals such as Na+, K+, Mg2+ and Ca2+, and leaves coordination sites free for anion binding. Synthetic Route of C12H13N3