Li Zili, Lin Zhiqun
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
ACS Appl Mater Interfaces. 2021 Sep 29;13(38):45130-45138. doi: 10.1021/acsami.1c12392. Epub 2021 Sep 15.
Two-dimensional (2D) polymers represent an emerging class of nanomaterials possessing covalent sheet-like morphology. They display a set of intriguing properties, including large specific surface area, low density, versatile control over sizes and compositions, and high adaptability. As such, they find application in energy conversion and storage, nanotechnology, and biotechnology. However, it remains challenging to synthesize thin-layer 2D polymers with conventional methods. Herein, in this perspective, recent advances in synthesis and applications of thin-layer 2D polymers via capitalizing on various "top-down" and "bottom-up" strategies are summarized. Particularly, some new methods (e.g., free radical polymerization in solution and surfactant-monolayer-assisted interfacial synthesis) in combination with electrostatic repulsion or steric hindrance effect to engineer single-layer 2D polymers at large scale are highlighted.
二维（2D）聚合物是一类新兴的具有共价片状形态的纳米材料。它们展现出一系列引人关注的特性，包括大比表面积、低密度、对尺寸和组成的灵活控制以及高适应性。因此，它们在能量转换与存储、纳米技术和生物技术等领域得到应用。然而，用传统方法合成薄层二维聚合物仍然具有挑战性。在此观点中，本文总结了通过利用各种“自上而下”和“自下而上”策略在薄层二维聚合物合成与应用方面的最新进展。特别强调了一些结合静电排斥或空间位阻效应以大规模制备单层二维聚合物的新方法（如溶液中的自由基聚合和表面活性剂单层辅助界面合成）。
