Shi Zude, Ge Haowei, He Yongmin
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
Greater Bay Area Institute for Innovation, Hunan University Guangzhou 511300 China.
Chem Sci. 2025 Sep 3. doi: 10.1039/d5sc02419f.
Amorphous materials with thickness thinned down to the single-layer limit have attracted increasing interest due to their well-defined disorder and emerging unique properties, such as disorder-dominated electronic states, high-density unsaturated coordination, enhanced quantum confinement, These features could enable innovative applications in electronics, photoelectronics, catalysis, and beyond. In this perspective, we provide an overview of recent advances in two-dimensional (2D) amorphous materials approaching the single-layer limit. We first introduce newly-developed key structural descriptors for these systems, including local bonding, topological disorder, and chemical composition. Next, we highlight fabrication breakthroughs across diverse material classes, such as amorphous carbon, oxides/hydroxides, metals, transition metal dichalcogenides (TMDCs), and metal/covalent-organic frameworks (MOFs/COFs). The resulting properties, spanning electrical/electrocatalytic properties, mechanical toughness, photoelectric response, and topological electronic states, are subsequently discussed. Finally, we outline current challenges and future opportunities in this rapidly evolving field.
厚度减薄至单层极限的非晶态材料因其明确的无序性和新出现的独特性质，如无序主导的电子态、高密度不饱和配位、增强的量子限制等，而引起了越来越多的关注。这些特性能够实现电子学、光电子学、催化等领域的创新应用。从这个角度出发，我们综述了接近单层极限的二维非晶态材料的最新进展。我们首先介绍了针对这些体系新开发的关键结构描述符，包括局部键合、拓扑无序和化学成分。接下来，我们重点介绍了不同材料类别（如非晶碳、氧化物/氢氧化物、金属、过渡金属二硫属化物（TMDCs）以及金属/共价有机框架（MOF/COF））的制备突破。随后讨论了由此产生的性质，包括电学/电催化性质、机械韧性、光电响应和拓扑电子态。最后，我们概述了这个快速发展领域当前面临的挑战和未来的机遇。
