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相关概念视频

Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
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Noncovalent Attractions in Biomolecules

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Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
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Solid-phase Submonomer Synthesis of Peptoid Polymers and their Self-Assembly into Highly-Ordered Nanosheets
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通过客体诱导的分子间相互作用进行自下而上的固态分子组合

Jia-Rui Wu1,2, Zhi Cai1, Gengxin Wu1

  • 1International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China.

Journal of the American Chemical Society
|November 24, 2021
PubMed
概括

研究人员开发了一种新的固态分子组装方法, 这种方法可以从无形粉末中创建有序结构,为超分子化学提供新的见解.

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科学领域:

  • 超分子化学
  • 材料科学
  • 固态化学

背景情况:

  • 在固态中构建有序的超分子架构比在溶液中更具挑战性.
  • 控制固体中的分子运动是先进材料设计的关键.

研究的目的:

  • 为固态结构开发一个自下而上的分子组装方法.
  • 调查使用新型pillararene类似物来创建有序组件.
  • 探索分子组合中的蒸汽诱导和热触发的变化.

主要方法:

  • 一个骨架切割的柱子[5]arene模拟物的设计和合成 (甲基化Leggero柱[5]arene,MeP[5]L).
  • 利用MeP[5]L的无形粉末通过客体蒸气吸收形成固态分子组件.
  • 采用热处理来诱导相对相转化为无链接器的上层结构.

主要成果:

  • 在暴露于特定的客体蒸气时,MeP[5]L的无形粉末成功形成了有序的,含有链接器的固态分子组件.
  • 这些组件可以通过加热转化为热力学优势的,无链接器的超结构.
  • 分子间相互作用被确定为调节分子排列的关键因素.

结论:

  • 这项研究展示了一种可控固态分子组合的新方法,
  • 这项研究为材料开发提供了对固态分子运动的新见解.
  • 这些发现为超分子化学和先进固态材料的设计提供了新的视角.