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Controlling Molecule Aggregation and Electronic Spatial Coherence in the H-Aggregate and J-Aggregate Regime at Room Temperature

机译:在室温下控制H-聚集体和J-聚集体中的分子聚集和电子空间相干性

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摘要

Controlling molecule aggregation in polymer films is one of the key factors in understanding the links between properties and structures in organic semiconductors. Here, we used poly(3-hexylthiophene-2,5-diyl) (P3HT) as the model system. By doping the insulating polar additive poly (ethylene oxide) (PEO) into P3HT film and controlling the processing methods, we achieved the side-to-side H-aggregate and head-to-tail J-aggregate of P3HT molecules with different extents at room temperature. We have demonstrated that the solvent solidification rate plays an important role in the controlling of molecule aggregation, which finally influenced the solid-state phase separation in the film. Furthermore, based on a series of spectroscopy investigations, we quantified the electronic spatial coherence in different aggregations combined with the modified Franck–Condon model. Subsequently, we established the relationship between the processing method, the molecule aggregation, and the electronic spatial coherence.
机译:控制聚合物膜中的分子聚集是理解有机半导体的性质与结构之间的联系的关键因素之一。在这里,我们使用聚(3-己基噻吩-2,5-二基)(P3HT)作为模型系统。通过将绝缘极性添加剂聚环氧乙烷(PEO)掺杂到P3HT膜中并控制处理方法,我们获得了P3HT分子在不同温度下从侧面到侧面的H聚集和从头到尾的J聚集。室内温度。我们已经证明,溶剂的固化速率在控制分子聚集中起着重要作用,这最终影响了薄膜中的固相分离。此外,基于一系列的光谱研究,我们结合改进的Franck-Condon模型对不同聚集体中的电子空间相干性进行了量化。随后,我们建立了处理方法,分子聚集和电子空间相干性之间的关系。

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