A persistent challenge in the field of organic electronics is balancing the optoelectronic properties of π-conjugated semiconducting polymers with their thermomechanical properties. A popular and effective approach to resolve this dichotomy is to blend π-conjugated polymers with amorphous, stretchy elastomers. In this work, poly(diketopyrrolopyrrole- co -thienovinylthiophene) was blended with an easily-prepared poly(dimethylsiloxane)-based phenylurea copolymer (PDMS-PU) to further explore this approach. Interestingly, the differing surface energy and polarity of this soft amorphous copolymer in comparison to other common siloxane-based polymers blended with conjugated polymers showed little impact on the solid-state morphology. Various techniques were used to evaluate the properties of the polymer blends, including atomic force microscopy, UV–vis spectroscopy, and x-ray diffraction. An in-depth morphological evaluation was performed on the blend at varying strain, elucidati...

中文翻译：

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半导体聚合物和硅氧烷-脲共聚物共混物的裂纹扩展和电子性能

有机电子领域的持续挑战是在π共轭半导体聚合物的光电子特性与其热机械特性之间取得平衡。解决该二分法的一种流行且有效的方法是将π共轭聚合物与无定形，可拉伸的弹性体共混。在这项工作中，将聚（二酮基吡咯并吡咯-噻吩并噻吩基噻吩）与易于制备的基于聚（二甲基硅氧烷）的苯基脲共聚物（PDMS-PU）共混，以进一步探索该方法。有趣的是，与掺混共轭聚合物的其他普通硅氧烷基聚合物相比，这种软质无定形共聚物的表面能和极性不同，对固态形态几乎没有影响。各种技术用于评估聚合物共混物的性能，包括原子力显微镜，紫外可见光谱和X射线衍射。在不同的应变下对共混物进行了深入的形态学评估，阐明了...