Dong Jinqiao, Liu Yan, Cui Yong
School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, P. R. China.
Nat Chem. 2024 Sep;16(9):1398-1407. doi: 10.1038/s41557-024-01595-w. Epub 2024 Aug 21.
Research into 2D materials has been growing with impressive speed since the discovery of graphene. Such layered materials with ultrathin morphologies and extreme aspect ratios currently display a vast range of properties; however, until recently a conspicuously missing property of 2D materials was global chirality. The situation has changed over the past few years with the implementation of several distinct types of ultrathin chiral 2D crystals. Here we offer a forward-looking perspective on this field to comprehend the fundamentals of global chirality in two dimensions and develop new directions. We specifically discuss the experimental achievements of the emerging chiral 2D materials with a focus on their design strategy, synthesis, structural characterization, fundamental physical properties and possible applications. We will highlight how the molecular-scale local chirality could be significantly transmitted and amplified throughout ultrathin single-crystalline 2D structures, resulting in distinctive global chirality that brings more sophisticated functions.
自石墨烯被发现以来，二维材料的研究一直以惊人的速度发展。这类具有超薄形态和极高纵横比的层状材料目前展现出了广泛的特性；然而，直到最近，二维材料中一个明显缺失的特性是整体手性。在过去几年里，随着几种不同类型的超薄手性二维晶体的出现，这种情况发生了变化。在此，我们对该领域提供一个前瞻性的视角，以理解二维空间中整体手性的基本原理，并开拓新的方向。我们特别讨论了新兴手性二维材料的实验成果，重点关注其设计策略、合成、结构表征、基本物理性质和可能的应用。我们将强调分子尺度的局部手性如何能够在超薄单晶二维结构中显著地传递和放大，从而产生独特的整体手性，带来更复杂的功能。
