通过在高分子聚合物中的互补相互作用来抑制美索斯科普秩序
Jessalyn Cortese1, Corinne Soulié-Ziakovic, Sylvie Tencé-Girault
1Matière Molle et Chimie (UMR 7167 ESPCI-CNRS), Ecole Supérieure de Physique et Chimie Industrielles de la Ville de Paris (ESPCI ParisTech), 10 rue Vauquelin, 75005 Paris, France.
Journal of the American Chemical Society
|February 11, 2012
概括
超分子聚合物中的互补相互作用可以破坏秩序,令人惊地改变材料特性. 乙胺 (Thy) 和二氨酸 (DAT) 之间更强的相互作用将固体聚合物转化为液体.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 超分子化学 超分子化学
背景情况:
- 超分子聚合物利用非共价相互作用进行自我组装.
- 控制美索斯科普秩序是调整材料性质的关键.
- 远程聚合物为研究自我组装动力学提供了一个平台.
研究的目的:
- 为了研究互补相互作用如何影响超分子聚合物中中观层次的秩序.
- 探索氨酸 (Thy) 和二氨酸氨酸 (DAT) 相互作用对聚合物结构的影响.
- 为了将分子相互作用的变化与宏观材料特性相关联.
主要方法:
- 基于聚乙烯氧化物 (PPO),Thy和DAT的远程分子超分子聚合物的合成.
- 使用各种技术对自组装和结晶行为进行表征.
- 对具有自我补充 (Thy) 和补充 (Thy-DAT) 相互作用的系统进行比较分析.
主要成果:
- 自补系统 (Thy) 呈现了状秩序和2D结晶.
- 添加DAT破坏了微相分离,并抑制了thy结晶.
- 强大的thy-DAT相互作用阻止了叶片结构,而不是较弱的自我补充相互作用.
结论:
- 互补的相互作用可以抑制中观层次的秩序,导致反直觉的属性变化.
- 特定分子相互作用 (例如,Thy-DAT) 的强度决定了最终的材料状态 (固体与液体).
- 这项工作突出了控制高分子聚合物架构和功能的设计原则.
相关概念视频
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02:52Stereoisomerism
Isomerism in Complexes
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Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
02:34Polymers
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