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相关概念视频

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

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Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
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Updated: Oct 7, 2025

Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene
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通过二硫化物进行可逆聚合,以实现内在动态的智能材料

Qi Zhang1,2, Da-Hui Qu1, Ben L Feringa1,2

  • 1Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China.

Journal of the American Chemical Society
|January 6, 2022
PubMed
概括

使用1,2-dithiolanes的动态共价化学可以实现可适应的聚合物和材料. 这项研究探讨了智能材料设计的可逆聚合,解决了挑战和未来的潜力.

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科学领域:

  • 材料科学
  • 聚合物化学
  • 超分子化学

背景情况:

  • 动态化学对于设计具有适应性,响应性和可回收性质的智能材料至关重要.
  • 超分子和动态共价化学提供了创建动态聚合物和材料的工具.
  • 1,2-dithiolanes作为一个关键的构建块,利用可逆的二硫化物键用于动态材料的构建.

研究的目的:

  • 探索1,2-dithiolanes作为智能材料的多功能支架的动态化学.
  • 总结一下目前基于1,2-dithiolane的动态材料的最新情况.
  • 提供这一研究领域的挑战和未来方向的概述.

主要方法:

  • 关于动态共价化学和超分子聚合物的文献综述.
  • 对1,2-dithiolanes的可逆聚合机制的分析
  • 含有1,2-二甲醇单元的材料的合成和表征 (隐含).

主要成果:

  • 1,2-二甲基通过形成动态共价二硫化物键,使其成为一种独特的动态材料.
  • 这些材料将超分子聚合物和可适应的共价网络的特性结合起来.
  • 狄奥兰聚合物的可逆性允许材料适应,反应,修复和回收.

结论:

  • 1,2-dithiolanes是用于合理设计先进智能材料的多功能结构单元.
  • 需要进一步的研究来克服这些动态材料的根本挑战并释放它们的全部潜力.
  • 未来的方向包括探索基于dithiolane化学的新应用和优化材料特性.