Ahsan Mollah Rohan, Mukherjee Arijit
Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Medchal District, Telangana, India.
Commun Chem. 2025 Apr 30;8(1):130. doi: 10.1038/s42004-025-01527-w.
Polymorphism in bi-component crystals has received immense attention in recent times due to their potential in property engineering. Two polymorphs of a functional bi-component molecular solid are derived using Long-range Synthon Aufbau Modules (LSAM) by tuning the nature and position of substituents. The two polymorphs show distinct photochemical properties; Form I undergoes partial cis-trans isomerization, and Form II sustains a [2 + 2] photodimerization. The polymorphic forms also exhibit different photomechanical behaviors. While Form I shows differing photomechanical responses upon UV irradiation based on crystal morphology, Form II undergoes a solid-to-liquid transition upon photo-irradiation.
近年来，双组分晶体中的多晶型现象因其在性能工程方面的潜力而备受关注。通过调节取代基的性质和位置，利用远程合成子构建模块（LSAM）获得了一种功能性双组分分子固体的两种多晶型物。这两种多晶型物表现出不同的光化学性质；晶型I发生部分顺反异构化，而晶型II则维持[2+2]光环化二聚反应。这些多晶型形式还表现出不同的光机械行为。晶型I在紫外线照射下根据晶体形态显示出不同的光机械响应，而晶型II在光照射下发生固-液转变。
