Facile room temperature synthesis of large graphene sheets from simple molecules
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2018-10-14
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The largest graphene sample obtained through a chemical reaction under ambient conditions (temperature and pressure), using simple molecules such as benzene or n-hexane as precursors, is reported. Starting from a heterogeneous reaction between solid iron chloride and the molecular precursor (benzene and n-hexane) at a water/oil interface, graphene sheets with micrometric lateral size are obtained as a film deposited at the liquid/liquid (L/L) interface. The pathway involving the cyclization and aromatization of n-hexane to benzene at the L/L interface, and the sequence of conversion of benzene to biphenyl and biphenyl to condensed rings (which originates the graphene structures) was followed by different characterization techniques and a mechanistic proposal is presented. Finally, we demonstrate that this route can be extended for the synthesis of N-doped graphene, using pyridine as the molecular precursor.
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LOPES, Laís C. et al. Facile room temperature synthesis of large graphene sheets from simple molecules. Chemical Science, [s. l.], v. 9, n. 37, p. 7297-7303, Oct. 2018. DOI: 10.1039/C8SC02818D. Disponível em: https://pubs.rsc.org/en/content/articlelanding/2018/SC/C8SC02818D. Acesso em: 30 jun. 2023.