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一个自我修复的水晶

Javed R Pathan1, Haripriya Balan1, Patrick Commins2

  • 1School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Vithura 695551, India.

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概括

分子晶体在热相转换和聚合过程中表现出裂变和自我愈合. 这一发现揭示了晶体中一种新的自我愈合机制,

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科学领域:

  • 材料科学
  • 聚合物化学
  • 晶体学

背景情况:

  • 拓化学聚合使单晶转化为单晶 (SCSC).
  • 分子晶体可以在加热时经历相变.
  • 材料的自我愈合特性是非常受欢迎的.

研究的目的:

  • 在热相转换和聚合过程中研究晶体的行为.
  • 探索分子晶体中裂变和自我修复的现象.
  • 在水晶材料中展示一种新的自我修复机制.

主要方法:

  • 设计和合成一个基于胺的单体与化物和化物单位.
  • 通过1,3-双极循环添加单晶对单晶 (SCSC) 聚合.
  • 使用差分扫描热量计 (DSC) 的热量分析.
  • 使用单晶X射线衍射的晶体结构特征.

主要成果:

  • 在室温下自发的SCSC聚合物.
  • 由于热相过渡而导致单体晶体的裂变.
  • 在进一步加热或冷却后,裂即时自愈.
  • 自愈的晶体保持了结构完整性和衍射能力.
  • 在60°C以SCSC方式完成聚合.

结论:

  • 在分子晶体中展示了一种破裂和自我修复的新机制.
  • 热相过渡加上高化学聚合会诱导晶体裂变和随后的愈合.
  • 这种自我愈合的过程保持了晶体的完整性,为先进的材料应用铺平了道路.