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首页> 外文期刊>Journal of Materials Research >Toward a better understanding of conjugated polymer blends with non-spherical small molecules: coupling of molecular structure to polymer chain microstructure
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Toward a better understanding of conjugated polymer blends with non-spherical small molecules: coupling of molecular structure to polymer chain microstructure

机译：更好地理解共轭聚合物与非球形小分子的共混物：分子结构与聚合物链微结构的耦合

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摘要

A major obstacle in the organic solar cell field is the inability to predict the relevant microstructural length scales that determine charge transport of the interpenetrating polymer/small molecule network based on the component chemical structures. This has led to a trial-and-error approach, which is extremely labor-intensive. This manuscript is our attempt to move toward forming a link between small molecule chemical structure and the morphological hierarchy of the blend. We focus on geometric motifs of small molecule organic semiconductors which have 2D, nonspherical 3D, and quasispherical 3D molecular orbital extent. We find that phase separation in these blends is a function of the molecular structure, and that the small molecule chemical structure is coupled to the crystallite orientation distribution of the polymer matrix. We further find that the ability of a molecule to form a network with a well-defined length scale of phase separation depends on the polymer persistence length.
机译：有机太阳能电池领域的主要障碍是无法预测相关的微结构长度尺度，该尺度决定了基于组分化学结构的互穿聚合物/小分子网络的电荷传输。这导致了反复试验的方法，这是非常劳动密集型的。该手稿是我们试图在小分子化学结构与共混物的形态层次之间形成联系的尝试。我们专注于具有2D，非球形3D和准球形3D分子轨道范围的小分子有机半导体的几何图案。我们发现这些共混物中的相分离是分子结构的函数，并且小分子化学结构与聚合物基质的微晶取向分布有关。我们进一步发现，分子形成具有明确定义的相分离长度尺度的网络的能力取决于聚合物的持久长度。

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  • 来源
    《Journal of Materials Research》 |2017年第10期|1935-1945|共11页
  • 作者

    Michael Roders; Vincent V. Duong; Alexander L. Ayzner;

  • 作者单位

    Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, CA 95064, USA;

    Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, CA 95064, USA;

    Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, CA 95064, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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