小尺寸结构单元制备数据集

本数据集主要围绕有机半导体材料液相加工中所面临的尺寸精确调控等方面的技术瓶颈，我们通过液桥限域微纳加工方法，协同调控模板微结构与表界面浸润性，有效控制三相线的锚定与滑移，从而制备高质量微纳阵列并对其尺寸进行精准调控。在我们的方法中，使用不同宽度的硅柱模板可以制备不同线宽的一维阵列。具体实验中，我们使用了柱宽为2 μm、4 μm等宽度的微柱模板，均可制备成具有良好形貌的微米线阵列。我们发现溶液浓度是影响有机单晶结构阵列尺寸的关键因素之一，溶液浓度越高，结晶尺寸越大，由于浓度会显著影响毛细液桥的形成过程，从而影响有机晶体的成核和生长。我们认为溶液浓度对毛细液桥中的退浸润和结晶过程产生影响的机理如下：有机晶体在毛细液桥中的成核节点取决于毛细液桥中溶液是否达到饱和点，对于高浓度溶液，在毛细液桥形成之初便以达到饱和点，因此便会迅速开始成核、生长；而对于低浓度溶液，则恰好相反，在毛细液桥收缩过程中才逐渐达到饱和点，此时毛细液桥体积会明显减小，因此也会得到尺寸更小的有机微纳晶体。为进一步制备尺寸更小的一维阵列，我们综合调控微柱尺寸、浸润性、溶液浓度等多种实验参数，实现了100 nm粗细的有机微纳阵列制备。本数据集是2018-2022年期间在中国科学院理化技术研究所仿生材料与界面科学院重点实验室完成的，主要记录了不同宽度微纳晶体阵列的透射电子显微照片、扫描电子显微照片、荧光显微照片及成核过程示意图，数据量28.20MB。

This dataset focuses on the technical bottlenecks faced in the liquid-phase processing of organic semiconductor materials, particularly precise size regulation. We adopted the liquid-bridge confined micro/nano fabrication method, which synergistically regulates template microstructures and surface/interface wettability to effectively control the anchoring and slipping of the three-phase line, thereby preparing high-quality micro/nano arrays and achieving precise size regulation. In this method, one-dimensional arrays with different line widths can be fabricated using silicon pillar templates with varying widths. In specific experiments, we used micropillar templates with widths of 2 μm, 4 μm, etc., and successfully prepared microwire arrays with favorable morphologies. We found that solution concentration is one of the key factors affecting the size of organic single-crystal structure arrays: the higher the solution concentration, the larger the crystal size. Since concentration significantly affects the formation process of capillary liquid bridges, it further influences the nucleation and growth of organic crystals. The mechanism by which solution concentration affects the dewetting and crystallization processes in capillary liquid bridges is as follows: the nucleation sites of organic crystals in the capillary liquid bridge depend on whether the solution in the liquid bridge reaches the saturation point. For high-concentration solutions, the saturation point is reached at the initial stage of capillary liquid bridge formation, so nucleation and growth start rapidly. In contrast, for low-concentration solutions, the saturation point is reached only during the shrinkage process of the capillary liquid bridge, at which point the volume of the liquid bridge is significantly reduced, resulting in smaller organic micro/nano crystals. To further fabricate one-dimensional arrays with smaller sizes, we comprehensively regulated multiple experimental parameters including micropillar size, wettability, and solution concentration, and successfully prepared organic micro/nano arrays with a thickness of 100 nm. This dataset was completed during 2018–2022 at the Key Laboratory of Biomimetic Materials and Interfaces, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences. It mainly records transmission electron microscopy (TEM) images, scanning electron microscopy (SEM) images, fluorescence microscopy images, and schematic diagrams of the nucleation process of micro/nano crystal arrays with different widths, with a total data volume of 28.20 MB.