Synthesis of Helical Aromatic Polyazomethines Consisting of Axially Dissymmetric Segments in the Main Chain
Year: 2025
Type: article
Abstract: ABSTRACT Aromatic polyazomethines were prepared by the polycondensation of axially dissymmetric aromatic diamines and aromatic dialdehydes. The polycondensation of axially dissymmetric (R)‐ or (S)‐binaphthyl‐2,2′‐diamines and aromatic dialdehydes in DMF at 100°C afforded wholly aromatic polyazomethines (M n = 4600–7600), which are soluble in common solvents such as tetrahydrofuran. The combination of (R)‐ or (S)‐6,6′‐diamino‐2,2′‐dimethylbiphenyls and aromatic dialdehydes also yielded soluble wholly aromatic polyazomethines (M n = 5500–12,000). Computational studies showed that the stable conformations of the polymers have one‐handed helical structures. The chiroptical properties of the obtained polyazomethines were investigated based on circular dichroism (CD) spectra.
Source: Journal of Polymer Science
DOI: 10.1002/pol.20250097
Authors: Mitsuhiro Hirata, Yutaka Okuyama, Kosei Takenouchi, Go Matsuba, Makoto Takeishi
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4409261818