Synthesis of Helical Aromatic Polyazomethines Consisting of Axially Dissymmetric Segments in the Main Chain

被引：0
|
作者：
Hirata, Mitsuhiro [1 ]
Okuyama, Yutaka [2 ]
Takenouchi, Kosei [3 ]
Matsuba, Go [3 ]
Takeishi, Makoto [4 ]
机构：
[1] Yamagata Res Inst Technol, Yamagata, Japan
[2] Yamagata Univ, Innovat Ctr Organ Elect, Yamagata, Japan
[3] Yamagata Univ, Grad Sch Organ Mat Engn, Yonezawa, Japan
[4] Yamagata Univ, Grad Sch Sci & Engn, Dept Mat Sci & Energy Engn, Yamagata, Japan
来源：
JOURNAL OF POLYMER SCIENCE | 2025年
关键词：
aromatic polyazomethine; helical polymer; optical active polymer; polycondensation; PHOTOINDUCED TRANSFORMATION; AZOBENZENE SEGMENTS; MOLECULAR-STRUCTURE; POLYAMIDES; UNITS; POLY(AZOMETHINE)S;
D O I：
10.1002/pol.20250097
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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 degrees C afforded wholly aromatic polyazomethines (Mn = 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 (Mn = 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.
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页数：8
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