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相关概念视频

Protein Complex Assembly02:41

Protein Complex Assembly

Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...

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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
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超分子的转化为宏分子物体.

Zubarev1, Pralle, Li

  • 1Department of Materials Science and Engineering, Department of Chemistry, Beckman Institute for Advanced Science and Technology, Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

Science (New York, N.Y.)
|January 23, 1999
PubMed
概括

通过自组装和热交联,超分子被转化为特定形状和大小的聚合物物体. 这一过程产生了呈现液晶性质的异构性大分子.

科学领域:

  • 聚合物化学 聚合物化学
  • 材料科学 材料科学 材料科学
  • 超分子化学 超分子化学

背景情况:

  • 超分子化学可以通过非共价相互作用来组织分子.
  • 控制纳米级的聚合物架构对于先进的材料性能至关重要.

研究的目的:

  • 为了将超分子转化为定义的聚合物对象.
  • 为了研究由此产生的宏分子的形状保留和特性.

主要方法:

  • 聚丁烯分子的自我组装成超分子.
  • 在集群中的可交叉链接块的空间隔离.
  • 热激活以诱导交联和聚合物形成.

主要成果:

  • 合成了7万个分子重量的宏分子.
  • 聚合物保留了最初集群的形状 (2 nm x 8 nm) 和狭窄的尺寸分布.
  • 由此产生的异构性宏分子形成了液晶状态.

结论:

  • 自组装为纳米级的受控聚合物合成提供了一个平台.
  • 在从集群转化为聚合物的过程中,形状和尺寸的真实性得到维持.

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  • 合成的大分子的异型性质导致了液晶态的行为.