Yang Mulan, Cheng Guangming, Mathur Nitish, Singha Ratnadwip, Yuan Fang, Yao Nan, Schoop Leslie M
Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.
Princeton Materials Institute, Princeton, NJ 08544, USA.
Nanoscale Horiz. 2024 Feb 26;9(3):479-486. doi: 10.1039/d3nh00408b.
As the demand for increasingly varied types of 1-dimensional (1D) materials grows, there is a greater need for new methods to synthesize these types of materials in a simple and scalable way. Chemical exfoliation is commonly used to make 2-dimensional (2D) materials, often in a way that is both straightforward and suitable for making larger quantities, yet this method has thus far been underutilized for synthesizing 1D materials. In the few instances when chemical exfoliation has been used to make 1D materials, the starting compound has been a van der Waals material, thus excluding any structures without these weak bonds inherently present. We demonstrate here that ionically bonded crystals can also be chemically exfoliated to 1D structures by choosing KFeS as an example. Using chemical exfoliation, antiferromagnetic 1D nanoribbons can be yielded in a single step. The nanoribbons are crystalline and closely resemble the parent compound both in structure and in intrinsic antiferromagnetism. The facile chemical exfoliation of an ionically bonded crystal shown in this work opens up opportunities for the synthesis of both magnetic and non-magnetic 1D nanomaterials from a greater variety of starting structures.
随着对日益多样化的一维（1D）材料的需求不断增长，人们越来越需要新的方法来以简单且可扩展的方式合成这类材料。化学剥离通常用于制备二维（2D）材料，其方式通常既直接又适合大量制备，然而迄今为止，这种方法在合成一维材料方面尚未得到充分利用。在少数使用化学剥离制备一维材料的情况下，起始化合物是范德华材料，因此排除了任何本身不存在这些弱键的结构。我们在此以KFeS为例证明，离子键合晶体也可以通过化学剥离形成一维结构。使用化学剥离，可以一步制备出反铁磁一维纳米带。这些纳米带是晶体，在结构和固有反铁磁性方面都与母体化合物非常相似。这项工作中展示的离子键合晶体的简便化学剥离为从更多种类的起始结构合成磁性和非磁性一维纳米材料开辟了机会。
