The author of 《Bottom-Up Synthesis of Graphene Monolayers with Tunable Crystallinity and Porosity》 were Neumann, Christof; Kaiser, David; Mohn, Michael J.; Fueser, Matthias; Weber, Nils-Eike; Reimer, Oliver; Goelzhaeuser, Armin; Weimann, Thomas; Terfort, Andreas; Kaiser, Ute; Turchanin, Andrey. And the article was published in ACS Nano in 2019. Reference of 2,5-Dimethoxytetrahydrofuran The author mentioned the following in the article:
We present a method for a bottom-up synthesis of atomically thin graphene sheets with tunable crystallinity and porosity using aromatic self-assembled monolayers (SAMs) as mol. precursors. To this end, we employ SAMs with pyridine and pyrrole constituents on polycrystalline copper foils and convert them initially into mol. nanosheets-carbon nanomembranes (CNMs)-via low-energy electron irradiation induced crosslinking and then into graphene monolayers via pyrolysis. As the nitrogen atoms are leaving the nanosheets during pyrolysis, nanopores are generated in the formed single-layer graphene. We elucidate the structural changes upon the crosslinking and pyrolysis down to the at. scale by complementary spectroscopy and microscopy techniques including X-ray photoelectron and Raman spectroscopy, LEED, at. force, helium ion, and high-resolution transmission electron microscopy, and elec. transport measurements. We demonstrate that the crystallinity and porosity of the formed graphene can be adjusted via the choice of mol. precursors and pyrolysis temperature, and we present a kinetic growth model quant. describing the conversion of mol. CNMs into graphene. The synthesized nanoporous graphene monolayers resemble a percolated network of graphene nanoribbons with a high charge carrier mobility (∼600 cm2/(V s)), making them attractive for implementations in electronic field-effect devices. In addition to this study using 2,5-Dimethoxytetrahydrofuran, there are many other studies that have used 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Reference of 2,5-Dimethoxytetrahydrofuran) was used in this study.
2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.Reference of 2,5-Dimethoxytetrahydrofuran
Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem