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Recent Advances in Polymorph Discovery Methods of Organic Crystals
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2022-12-01 , DOI: 10.1021/acs.cgd.2c00960
Changlin Yao 1 , Shufang Zhang 1 , Lei Wang 2 , Xutang Tao 2
Affiliation  

Polymorphism, the ability of the same substance to crystallize in more than one crystal structure, is a common phenomenon in organic crystals, influencing the physicochemical properties of solid materials in many important fields (foods, dyes and pigments, high energic materials, pharmaceuticals, etc.). The utilization of various polymorph discovery methods could increase the possibility of finding polymorphs with desired properties, achieving an optimal performance of the final product. Recently, there has been a steady development of polymorph discovery in both experimental and computational methods. To better guide the polymorph discovery, this paper reviews the recent advances in the polymorph screening methods of organic crystals, mainly including solution crystallization, melt crystallization, and crystal structure prediction. This paper also summarizes the nucleation theory in polymorphic systems to understand the formation of polymorphs and highlights the mechanisms of polymorph discovery by the kinds of methods. Finally, challenges of polymorph discovery are briefly discussed, aimed to shorten the screening time and make the polymorph discovery more effective.

中文翻译:

有机晶体多晶型发现方法的最新进展

多晶现象,即同一种物质以一种以上的晶体结构结晶的能力,是有机晶体中的一种普遍现象,在许多重要领域(食品、染料和颜料、高能材料、医药等)中影响着固体材料的理化性质.). 利用各种多晶型发现方法可以增加找到具有所需特性的多晶型的可能性,从而实现最终产品的最佳性能。最近,多晶型发现在实验和计算方法方面都有稳步发展。为了更好地指导多晶型的发现,本文综述了有机晶体多晶型筛选方法的最新进展,主要包括溶液结晶、熔融结晶和晶体结构预测。本文还总结了多晶型体系中的成核理论以理解多晶型的形成,并强调了通过各种方法发现多晶型的机制。最后,简要讨论了多晶型发现的挑战,旨在缩短筛选时间并使多晶型发现更加有效。
更新日期:2022-12-01
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