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首页> 外文期刊>Crystal growth & design >Synthesis, Crystal Structures, and Solid-State Polymerization of 8-[4-(Dimethylamino)phenyl]octa-5,7-diynyl Carbamates
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Synthesis, Crystal Structures, and Solid-State Polymerization of 8-[4-(Dimethylamino)phenyl]octa-5,7-diynyl Carbamates

机译：8- [4-（二甲基氨基）苯基] Octa-5,7-叔酰胺的合成，晶体结构和固态聚合

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摘要

Six butadiyne monomers with (dimethylamino)phenyl and N-substituted urethane substituents were synthesized and their crystal structures and solid-state polymerization were investigated. In five of the six monomers, directions of the butadiyne stacking and the intermolecular hydrogen bonding between urethane groups coincided, and translational distance d between adjacent butadiyne moieties was around 5 angstrom. Among them, four monomers showed angle theta between the translation axis of the monomers and the butadiyne moiety of around 45 degrees, which is appropriated for regular 1,4-addition polymerization. These geometries resulted in formation of polydiacetylenes with characteristic excitonic absorption and relatively high conversion. One monomer was found to have large theta, and the regular polymerization was not recognized to be quite low conversion. However, in the remaining one monomer among six, the directions of butadiyne stacking and intermolecular hydrogen bonding were different and d was much longer than 5 angstrom. However, distance between reacting carbons for 1,4-addition was short enough resulting in comparable conversion without regular polymerization. Although introduction of urethane group is effective to increase probability of the solid-state polymerization of butadiynes, hydrogen bonding direction, methylene chain conformation, and disorder of the aromatic rings were found to afford the variation from the appropriate conditions.
机译：合成了六种丁酰胺单体（二甲基氨基）苯基和N-取代的氨基甲酸酯取代基，并研究了它们的晶体结构和固态聚合。在六种单体中的五个中，丁酰胺堆叠的方向和氨基甲酸酯基团之间的分子间氢键合，相邻的丁酰胺部分之​​间的平移距离D约为5埃。其中，四种单体显示在单体的平移轴和丁酰胺部分之​​间的角度θ，其约45度，其被普定常规的1,4-加成聚合占用。这些几何形状导致形成具有特征性兴高性吸收和相对高转化的多亚乙烯基。发现一种单体具有大的θ，并且常规聚合未被认为是相当低的转化率。然而，在六个中的剩余单体中，丁酰胺堆叠和分子间氢键的方向不同，d长于5埃。然而，在1,4-加入的反应碳之间的距离足够短，导致无具有规则聚合的转化率。虽然氨基甲酸酯基团的引入是有效地增加丁二醇的固态聚合的概率，但发现氢键方向，亚甲基链构象和芳环的病症得到了来自适当条件的变化。

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  • 来源
    《Crystal growth & design》 |2018年第10期|共10页
  • 作者

    Ikeshima Masataka; Katagiri Hiroshi; Fujiwara Wataru; Tokito Shizuo; Okada Shuji;

  • 作者单位

    Yamagata Univ Grad Sch Sci &

    Engn 4-3-16 Jonan Yonezawa Yamagata 9928510 Japan;

    Yamagata Univ Grad Sch Sci &

    Engn 4-3-16 Jonan Yonezawa Yamagata 9928510 Japan;

    Yamagata Univ Grad Sch Sci &

    Engn 4-3-16 Jonan Yonezawa Yamagata 9928510 Japan;

    Yamagata Univ Grad Sch Sci &

    Engn 4-3-16 Jonan Yonezawa Yamagata 9928510 Japan;

    Yamagata Univ Grad Sch Sci &

    Engn 4-3-16 Jonan Yonezawa Yamagata 9928510 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
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