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Twinning Organosuperelasticity of a Fluorinated Cyclophane Single Crystal

机译:氟化环烷烷烷单晶的孪生有机弹性

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摘要

Superelasticity is characterized by unique mechanical behavior, i.e., spontaneous shape recoverability by diffusionless plastic deformation and has been considered to be a property of specific alloys, so-called shape memory alloys, from its discovery in 1932. The discovery of superelasticity in an organic crystal in 2014, so-called organosuperelasticity, paved the way for functionalization of superelastic materials based on molecular design. In this context, achieving superelasiticity using various kinds of organic compounds and elucidation of its mechanism are inevitable. Here we show superelasticity in a single crystal of a derivative of sterically bulky cyclophanes: 4,5,7,8,12,13,15,16-octafluoro[2.2]paracydophane. Crystallographic studies indicated interconversion of two centrosymmetric crystallographically independent molecules by changing molecular orientations in the crystalline state in twinning superelasticity. Our findings will contribute to propose one of the useful approaches for designing organosuperelastic materials.
机译:超弹性的特征在于独特的力学行为,即通过扩散塑性变形的自发形状可回收性,并且已被认为是1932年发现其发现的特定合金,所谓的形状记忆合金的性质。在有机晶体中发现超弹性2014年,所谓的有机弹性,铺平了基于分子设计的超弹性材料的功能化方法。在这种情况下,使用各种有机化合物实现过度的分布性并阐明其机制是不可避免的。在这里,我们在空间上庞大的环烷的衍生物的单晶中显示出超弹性:4,5,7,8,12,13,15,16-八氟氟[2.2]苯甲烷。结晶研究表明,通过在孪晶超弹性中改变结晶状态的分子取向来表示两种亚里索对称晶形上的互联。我们的调查结果将有助于提出一种设计有机弹性材料的有用方法。

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  • 来源
    《Crystal growth & design》 |2019年第10期|共3页
  • 作者单位

    Yokohama City Univ Grad Sch Nanobiosci Dept Nanosyst Sci Kanazawa Ku 22-2 Seto Yokohama Kanagawa 2360027 Japan;

    Yokohama City Univ Grad Sch Nanobiosci Dept Nanosyst Sci Kanazawa Ku 22-2 Seto Yokohama Kanagawa 2360027 Japan;

    Yokohama City Univ Grad Sch Nanobiosci Dept Nanosyst Sci Kanazawa Ku 22-2 Seto Yokohama Kanagawa 2360027 Japan;

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  • 正文语种 eng
  • 中图分类 晶体学;
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