Recently, a series of works of Prof. Lei Fu’s group have been published in the top journals in the chemistry and material field, such as J. Am. Chem. Soc., Angew. Chem. Int. Ed., Adv. Mater. and Chem (a Cell’s sister journal), exhibiting the progresses they achieved in the atomically precise construction of two-dimensional (2D) crystals.
2D crystals are a new kind of materials consisting of a single layer of atoms. The unique structures endow them excellent physical and chemical properties and rich scientific connotation, which qualify them as promising candidates in various application fields, such as electronics and optoelectronics. The properties of the 2D materials are highly sensitive to their structural change. The variation of the layer number, defects and dopants at the atomic level will all lead to the significant change to their properties. Therefore, how to precise construct the 2D crystals is a great challenge of vital importance.
Fu’s group focused on this challenge and made a series of innovative achievements. They proposed the liquid metal chemical vapor deposition (LMCVD) strategy and realized the atomically precise control of the 2D crystals. In 2017, Prof. Lei Fu has authored 8 scientific papers on the top journals in the chemistry and material field as the individual corresponding author with Wuhan University as the first signature unit, including Chem. Rev., J. Am. Chem. Soc., Angew. Chem. Int. Ed., Adv. Mater., Chem, Adv. Energy Mater., Nano Energy. and so on.
They successfully embedded the lanthanon (Ln) ions in the 2D crystals and observed the significant red-shift of the photoluminescence (PL) peak, which offered a new perspective for the study of the optical properties of the Ln elements (Angew. Chem. Int. Ed. 2017, 56, 10.1002/anie.201711071). For the first time, they caught sight of the stable and reversible thermal-induced bending (TIB) of ReS2 nanowalls, which paved a new way for designing inorganic thermal responsive materials. Moreover, this unique TIB behavior makes ReS2 a potential candidate for future smart applications, such as smart window and microfluidic device (Adv. Mater. 2017, 29, 1704585).
They also revealed the spontaneous assembly of alumina nanoparticles on the liquid metal. Based on the as-obtained alumina array, we realized the precise nucleation control both in the spatial and time, and further synthesized very-large-scale graphene single crystal array (Chem 2017, 4, in press). They also extended the array from the single component to the heterostructure. They succeeded for the first time in synthesizing 2D h-BN–G core–shell arrays (CSA), which will open up new territory for 2D core–shell structure assembly and promote the application of 2D functional structures in integrated devices to a great extent (J. Am. Chem. Soc. 2017, 139, 13997).
Based on the systematic progresses they achieved in the atomically precise construction of 2D crystals, Fu’s group was invited to publish the reviews titled “Exploring Two-Dimensional Materials towards the Next-Generation Circuits: From Monomer Design to Assembly Control” and “Controllable Chemical Vapor Deposition Growth of Two-Dimensional Heterostructures” on Chem. Rev. (Chem. Rev. 2018, 118, in press) and Chem (Chem 2018, 4, in press).
Chinese Version: http://news.whu.edu.cn/info/1002/50290.htm