Dislocations in molecular crystals remain terra incognita. Owing to the complexity of molecular structure, dislocations in molecular crystals can be difficult to understand using only the foundational concepts devised over decades for hard materials. Herein, we review the generation, structure, and physicochemical consequences of dislocations in molecular crystals. Unlike metals, ceramics, and semiconductors, molecular crystals are often characterized by flexible building units of low symmetry, thereby limiting analysis, complicating modeling, and prompting new approaches to elucidate their role in crystallography from growth to mechanics. Such considerations affect applications ranging from plastic electronics and mechanical actuators to the tableting of pharmaceuticals.

中文翻译：

---

分子晶体中的位错

分子晶体中的位错仍然是未知领域。由于分子结构的复杂性，仅使用几十年来为硬材料设计的基本概念可能难以理解分子晶体中的位错。在此，我们回顾了分子晶体中位错的产生、结构和物理化学后果。与金属、陶瓷和半导体不同，分子晶体通常以低对称性的灵活构建单元为特征，从而限制了分析，使建模复杂化，并促使新方法阐明它们在从生长到力学的晶体学中的作用。这些考虑影响了从塑料电子和机械致动器到药物压片的应用。