超分子化学
手性(物理)
分子
合成子
材料科学
超分子手性
对映体药物
机械容积
自组装
结晶
结晶学
发光
对称性破坏
偏心因子
纳米技术
化学物理
手征对称破缺
化学
立体化学
对映选择合成
光电子学
有机化学
物理
量子力学
Nambu–Jona Lasinio模型
催化作用
作者
Zheng‐Fei Liu,Xin‐Yi Ye,Lihua Chen,Li‐Ya Niu,Wei Jun Jin,Shaodong Zhang,Qing‐Zheng Yang
标识
DOI:10.1002/anie.202318856
摘要
Abstract Chirality, with its intrinsic symmetry‐breaking feature, is frequently utilized in the creation of acentric crystalline functional materials that exhibit intriguing optoelectronic properties. On the other hand, the development of chiral crystals from achiral molecules offers a solution that bypasses the need for enantiopure motifs, presenting a promising alternative and thereby expanding the possibilities of the self‐assembly toolkit. Nevertheless, the rational design of achiral molecules that prefer spontaneous symmetry breaking during crystallization has so far been obscure. In this study, we present a series of six achiral molecules, demonstrating that when these conformationally flexible molecules adopt a cis ‐conformation and engage in multiple non‐covalent interactions along a helical path, they collectively self‐assemble into chiral superstructures consisting of single‐handed supramolecular columns. When these homochiral supramolecular columns align in parallel, they form polar crystals that exhibit intense luminescence upon grinding or scraping. We therefore demonstrate our molecular design strategy could significantly increase the likelihood of symmetry breaking in achiral molecular synthons during self‐assembly, offering a facile access to novel chiral crystalline materials with unique optoelectronic properties.
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