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在基于宏循环的软晶体中通过迪西兰基结构的异型变形产生热性

Kenichiro Omoto^1,2, Toyotaka Nakae¹, Masaki Nishio¹

¹Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

Journal of the American Chemical Society

|June 24, 2020

概括

研究人员从disianyl宏循环 (C4) 开发出软晶体,这些晶体表现出可逆相变和机械运动. 这一发现开辟了有机化学和软晶体应用的新途径.

科学领域:

有机化学
材料科学
晶体学

背景情况:

软晶体是一种具有动态机械性质的新型材料.
迪沙尼宏循环为设计响应性材料提供独特的结构灵活性.

研究的目的:

合成和描述一种具有软晶体潜力的新型迪沙尼宏循环 (C4).
研究C4单晶体的热相转变行为和相关的机械运动.

主要方法:

单晶X射线衍射
热分析 (例如DSC,TGA)
分子包装和动态的结构分析

主要成果:

成功合成了C4迪沙尼尔宏循环.
在C4中观察可逆单晶到单晶 (SCSC) 阶段过渡.
在相变过程中表现出热效应 (机械运动),归因于协调的分子运动 (平行旋转运动) 和异构细胞变化.

结论:

C4宏循环表现出独特的软晶体特性,包括可逆的SCSC相变和热效应.
对于观察到的动态行为而言,disilanyl结构的灵活性和特定的分子包装至关重要.
这项研究突显了disianyl宏循环在开发高级功能材料方面的潜力.

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