The Reactivity of Reduced Graphene Depends on Solvation

Hou, Huilei; Merino, Juan P.; Criado, Alejandro; Hirsch, Andreas; Prato, Maurizio

Use this link to cite:

http://hdl.handle.net/2183/37520

The Reactivity of Reduced Graphene Depends on Solvation

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Criado_Fernandez_Alejandro_2019_Reactivity_Reduced_Graphene_Depends_on_Solvation.pdf (767.86 KB)

Identifiers

URI: http://hdl.handle.net/2183/37520

DOI: 10.1088/2053-1583/aafd9b

Publication date

2019-02-01

Authors

Hou, Huilei

Merino, Juan P.

Criado, Alejandro

Hirsch, Andreas

Prato, Maurizio

Bibliographic citation

Hui-Lei Hou et al 2019 2D Mater. 6 025009 DOI 10.1088/2053-1583/aafd9b

Abstract

[Abstract] The reactivity of reduced graphene sheets (graphenide), obtained by dissolution of graphite intercalation compounds, in particular KC8, was systemically studied by cova-lent functionalization with 4-fluorobenzenediazonium tetrafluoroborate and 4-iodoaniline in different solvents (5 pure and 7 solvents with addition of K+ chelating agents). Interestingly, proper solvation of the potassium cations was beneficial to the covalent functionalization, while excessive solvation led to destabilization and floccula-tion, with decreased reactivity of graphenide. The results were confirmed by scanning Raman spectroscopy (SRS) and x-ray photoelectron spectroscopy (XPS).