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.)  or ~20 nm thick nanosheets of organic semiconductors . 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].
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