The molecular arrangement of polymeric organic semiconductors alter the macroscopic optoelectronic properties of the material. Most existing solution-based deposition methods are however, limited in both resolution as well as pattern design and often result in molecular disorder upon drying. Here, a method for aligning the amorphous polymer polyindenofluoren-8-triarylamine (PIF8-TAA) via inkjet printing is presented. By tuning the printing speed and including different amounts of the solid solvent crystallization agent 1,3,5-trichlorobenzene (TCB), fibrous structures with varying morphology can be fabricated. The resulting optical properties are analyzed using photoluminescence and Raman spectroscopy. The findings show an optical anisotropic behavior dependent on the fiber size and alignment. This is likely caused by the increased molecular arrangement within the structures. Methods enabling tailored structuring of the molecular arrangement in a material, provide the possibility to develop novel applications, as well as to optimize existing devices with improved properties such as, charge carrier transport and emission efficiency.

聚合有机半导体的分子排列改变了材料的宏观光电性能。然而，大多数现有的基于溶液的沉积方法在分辨率和图案设计上都受到限制，并且常常在干燥时导致分子混乱。在这里，提出了一种通过喷墨印刷使无定形聚合物聚茚并芴-8-三芳基胺（PIF8-TAA）取向的方法。通过调整打印速度并包含不同数量的固体溶剂结晶剂1,3,5-三氯苯（TCB），可以制造出形态各异的纤维结构。使用光致发光和拉曼光谱分析所得的光学性质。研究结果显示出取决于纤维尺寸和排列的光学各向异性行为。这很可能是由于结构内分子排列的增加。能够对材料中的分子排列进行量身定制的方法，提供了开发新颖应用程序以及优化具有改进性质（如载流子传输和发射效率）的现有设备的可能性。