美国哈佛大学Mason Jarad A.团队报道了银纳米团簇和有机大环的共取向离子晶体自组装。相关研究成果于2025年1月8日发表在国际顶尖学术期刊《自然—化学》。

原子精确的纳米团簇可以组装成具有独特电子、磁性、光学和催化性能的有序超晶格。纳米簇与功能性有机分子的共结晶，为获得更广泛的结构和性能提供了机会，但综合控制可能具有挑战性。

该文中，研究人员介绍了一种超分子方法，将原子精确的银纳米簇组装成一系列，具有可调结构和性能的纳米簇有机离子共晶体。通过利用阴离子银纳米簇和不同大小的阳离子有机大环之间的，非共价相互作用，研究可以操纵纳米簇表面配体的取向，以实现具有大手性效应的，对映体纯纳米簇有机离子共晶体的原位拆分。

除了手性，这种共晶组装方法通过超分子化学和原子精确纳米化学的结合，为设计功能性固态纳米材料提供了一个有前景的平台。

附：英文原文

Title: Self-assembly of chiroptical ionic co-crystals from silver nanoclusters and organic macrocycles

Author: Li, Yingwei, Stec, Grant J., Kim, Hong Ki, Thapa, Surendra, Zheng, Shao-Liang, McClelland, Arthur, Mason, Jarad A.

Issue&Volume: 2025-01-08

Abstract: Atomically precise nanoclusters can be assembled into ordered superlattices with unique electronic, magnetic, optical and catalytic properties. The co-crystallization of nanoclusters with functional organic molecules provides opportunities to access an even wider range of structures and properties, but can be challenging to control synthetically. Here we introduce a supramolecular approach to direct the assembly of atomically precise silver nanoclusters into a series of nanoclusterorganic ionic co-crystals with tunable structures and properties. By leveraging non-covalent interactions between anionic silver nanoclusters and cationic organic macrocycles of varying sizes, the orientation of nanocluster surface ligands can be manipulated to achieve in situ resolution of enantiopure nanoclusterorganic ionic co-crystals that feature large chiroptical effects. Beyond chirality, this co-crystal assembly approach provides a promising platform for designing functional solid-state nanomaterials through a combination of supramolecular chemistry and atomically precise nanochemistry.

DOI: 10.1038/s41557-024-01696-6

Source: https://www.nature.com/articles/s41557-024-01696-6