Andrey Turchanin1 2

1, Friedrich Schiller University Jena, Jena, , Germany
2, Center for Energy and Environmental Chemistry Jena (CEEC Jena), Jena, , Germany

After the demonstration of a variety of inorganic two-dimensional (2D) materials (graphene, hBN, MoS2, etc.), molecular 2D materials have attracted a significant research interest as well. However, the direct synthesis of these materials is an exceptionally challenging task for material scientists. In this contribution, a simple and robust physical method for the synthesis of molecular 2D materials is presented based on low-energy electron irradiation induced chemical reactions in aromatic molecular layers. In this way, ultrathin (~1 nm) molecular nanosheets with adjustable chemical and physical properties called Carbon Nanomembranes (CNM) can be prepared. Moreover, the method enables the synthesis of various other 2D organic-inorganic hybrids (e.g., MoS2-CNM, graphene-CNM lateral heterostructures, etc.) [2] or ~20 nm thick nanosheets of organic semiconductors [3]. Functional properties of these molecular 2D materials including their chemical functionalization and engineering of hybrid hierarchical structures for application in electronic and energy conversion devices will be discussed [4-5].

[1] A. Turchanin, A. Gölzhäuser, Adv. Mater. 28 (2016) 6075.
[2] A. Winter, A. Turchanin et al., Carbon 128 (2018) 106.
[3] S. J. Noever, B. Nickel, A. Turchanin et al., Adv. Mater. 29 (2017) 1606283.
[4] C. Neumann, A. Turchanin et al., ACS Nano (2019) doi: 10.1021/acsnano.9b03475.
[5] A. Winter, A. Turchanin et al., 2D Materials 6 (2019) 021002