Metal-free phthalocyanine (H 2 Pc) has been widely used as photosensitive semiconductors in the organic optoelectronics field because of its unique planar molecular structure and high photocarriers’ generation efficiency. Herein, this paper related to a new facile and efficient one-step method for preparing specific crystal form of H 2 Pc with high crystallinity through ball-milling process, in which α-H 2 Pc can be prepared directly by dry ball-milling, and β-H 2 Pc and X-H 2 Pc can be simply obtained through wet ball-milling in butanone solvent at different temperatures. X-ray diffraction (XRD) was used to characterize the crystal stability of α-H 2 Pc, β-H 2 Pc, and X-H 2 Pc, which revealed that all the three crystalline H 2 Pc prepared had excellent crystal stability under different mechanical conditions. Graphical abstract α-H 2 Pc, β-H 2 Pc, and X-H 2 Pc with excellent crystal stability can be simply prepared by dry/wet ball-milling process.

中文翻译：

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一步法制备可控晶型无金属酞菁

无金属酞菁（H 2 Pc）由于其独特的平面分子结构和高的光载流子产生效率而被广泛用作有机光电领域的光敏半导体。在此，本文涉及一种通过球磨工艺制备高结晶度的H 2 Pc特定晶型的简便，高效的新方法，其中可以通过干式球磨直接制备α-H2 Pc， β-H2 Pc和XH 2 Pc可以通过在丁酮溶剂中于不同温度下进行湿式球磨而简单地获得。用X射线衍射（XRD）表征了α-H2 Pc，β-H2 Pc和XH 2 Pc的晶体稳定性，表明所制备的三种晶体H 2 Pc在不同的机械性能下均具有优异的晶体稳定性。情况。图形抽象α-H2 Pc，β-H2 Pc，