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Polymers02:34

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The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
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Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
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一种基于DPP的可光模式和可拉伸的聚合物半导体,含有肉酸盐的侧链.

Kaiyuan Chenchai1,2, Xiaobo Yu1, Cheng Li3

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研究人员开发了一种新的聚合物半导体,PDPP4T-CIN,用于柔性电子. 这种材料通过UV诱导的交叉连接提供了高电荷流动性,光模式性和增强的伸展性.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 有机电子 有机电子
  • 聚合物化学 聚合物化学

背景情况:

  • 灵活的电子需要高电荷流动性,光模式性和伸展性高的聚合物半导体.
  • 现有的材料往往会因为机械或图案设计能力而损害性能.

研究的目的:

  • 设计和合成一种新的聚合物半导体,PDPP4T-CIN,与集成的光反应组,以提高灵活电子的性能.
  • 研究侧链工程对聚合物半导体电子和机械性能的影响.

主要方法:

  • 合成PDPP4T-CIN通过将光反应性肉酸盐组纳入聚合物侧链.
  • 使用紫外线光照射来诱导侧链交联的光图.
  • 电荷移动性的特征,薄膜结晶性,耐裂性和应变下的机械强度.

主要成果:

  • 在紫外线暴露时,PDPP4T-CIN表现出高效的负光电阻行为,使得高分辨率的图案设计成为可能.
  • 交叉连接保留了聚合物骨干的电子结构和内在电荷流动性.
  • 肉的侧链增强了薄膜结晶性,从而提高了伸展性和抗裂性能.
  • 与原始PDPP4T相比,PDPP4T-CIN在重复拉伸下显示出优越的移动性保留和机械强度.

结论:

  • 用光反应性肉酸盐组进行侧链工程是开发先进聚合物半导体的多功能策略.
  • PDPP4T-CIN提供了一个有前途的平台,用于可图形,机械坚固和可伸缩的有机电子设备.
  • 这种方法有助于创建具有高电荷移动性和增强设备稳定性的灵活电子产品.