近日，清华大学杨振忠团队研究了具有强可逆手性的分级手性超分子组合。相关论文于2025年8月14日发表在《科学》杂志上。

超分子组件由于其结构多样性和动态特性，在先进的手性材料中具有很大的应用前景，但其较低的手性活性限制了其实际应用。

研究组报道了通过非手性两亲单分子胶束和手性添加剂的共组装而获得的具有巨大手性活性和机械属性的分层超分子组装。手性纤维组装在胶束施加的纳米结构环境中产生，通过组分之间的多个氢键进行手性转移。将多种非手性发光分子和纳米晶体集成到这些组件中可以得到不对称系数为~101的全彩圆偏振发光活性材料。浓度依赖的手性反转通过调整共组装动力学访问。这种策略可以实现对量子和光学技术至关重要的高效红色CPL。

附：英文原文

Title: Hierarchical chiral supramolecular assemblies with strong and invertible chiroptical properties

Author: Minju Kim, Mingyue Zhang, You-Liang Zhu, Yan Yan, Xin Pu, Woosung Choi, Sein Chung, Kilwon Cho, Jeongwon Kim, Vladimir Tsukruk, Zhenzhong Yang, Nicholas A. Kotov, Zhong-Yuan Lu, Dong Ha Kim, Zhiqun Lin

Issue&Volume: 2025-08-14

Abstract: Supramolecular assemblies hold great promise for advanced chiral materials because of their structural diversity and dynamic features, but their low chiroptical activity limits practical applications. We report hierarchical supramolecular assemblies with giant chiroptical activity and mechanical attributes achieved through coassembly of achiral amphiphilic unimolecular micelles and chiral additives. Chiral fibrillar assemblies emerge from the nanostructured environment imposed by the micelles, driven by progressive chirality transfer through multiple hydrogen bonds between components. Integrating multifarious achiral luminescent molecules and nanocrystals into these assemblies leads to full-color circularly polarized luminescence–active materials with dissymmetry factors of ~101. A concentration-dependent chirality inversion is accessed through tailoring the coassembly kinetics. This strategy enables efficient red CPL, crucial for quantum and optical technologies.

DOI: adu0296

Source: https://www.science.org/doi/10.1126/science.adu0296