The author of 《Cation-Directed Self-Assembly of Macrocyclic Diacetylene for Developing Chromogenic Polydiacetylene》 were Shin, Geon; Khazi, Mohammed Iqbal; Kundapur, Umesha; Kim, Bubsung; Kim, Youngmee; Lee, Chan Woo; Kim, Jong-Man. And the article was published in ACS Macro Letters in 2019. Computed Properties of C5H7N3 The author mentioned the following in the article:
The cation-directed self-assembly process has emerged as a fascinating approach for constructing supramol. architectures and manifested a diverse range of assembly related applications. Herein, we synthesized a macrocyclic structure containing bis-amidopyridine and photopolymerizable diacetylene template, PyMCDA. Owing to the metal coordination affinity of bis-amidopyridine and the π-π stacking characteristic of diacetylene template and complementary to the cyclic mol. framework, Cs+-directed organic nanotubes are generated via unidirectional self-assembly of PyMCDA. The monomeric PyMCDA nanotubes are transformed into the covalently crosslinked chromogenic polydiacetylene nanotubes (PyMCPDA-Cs+) by UV-promoted topochem. polymerization The result of a metal-ligand coordination characteristic, geometric parameters in solid-state assemblies, and topochem. polymerization behavior reveals a generation of Cs+ ion inserted nanotubes. Interestingly, PyMCDA-Cs+ nanotubes display thermochromic property with a brilliant blue-to-red color transition. In the experimental materials used by the author, we found 2,6-Diaminopyridine(cas: 141-86-6Computed Properties of C5H7N3)
2,6-Diaminopyridine(cas: 141-86-6) belongs to pyridine. Pyridine and its simple derivatives are stable and relatively unreactive liquids, with strong penetrating odours that are unpleasant.Computed Properties of C5H7N3