Watanabe, Hiroyuki; Tanaka, Kazuo; Chujo, Yoshiki published an article in 2021. The article was titled 《The Effect of the Substituent Positions on Self-Assembly Behaviors of Liquid-Crystalline 1,3,4,6,9b-Pentaazaphenalene Derivatives》, and you may find the article in Bulletin of the Chemical Society of Japan.Synthetic Route of C5H7N3 The information in the text is summarized as follows:
The syntheses and phase transition behaviors of liquid crystals composed of triangular π;-conjugated mols., 1,3,4,6,9b-pentaazaphenalene (5AP) was discussed. Three types of 5AP derivatives having 3,4,5-tris(dodecyloxy)phenyl ((OC12)3Ph) were prepared by changing substituent positions. From thermal and structural analyses, liquid crystalline phases were observed from all derivatives According to structural data and phase transition behaviors, it was suggested that the positions of the substituents significantly influence mol. alignments in liquid crystals as well as thermal properties. In particular, the columnar structures, which were favorable for expressing efficient carrier transportation, were observed in the 5AP derivative These results suggested that the 5AP scaffold could be a platform for constructing a variety of aggregated structures by slightly different patterns of the mol. structures. Plausible models for these transitions were discussed. The experimental process involved the reaction of 2,6-Diaminopyridine(cas: 141-86-6Synthetic Route 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.Synthetic Route of C5H7N3