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Functionalization of Hydrogenated Chemical Vapour Deposition‐Grown Graphene by On‐Surface Chemical Reactions
Author(s) -
Drogowska Karolina,
Kovaříček Petr,
Kalbáč Martin
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201605385
Subject(s) - surface modification , graphene , chemical vapor deposition , materials science , chemical modification , chemical engineering , deposition (geology) , nanotechnology , polymer chemistry , engineering , paleontology , sediment , biology
The reactivity of hydrogenated graphene when treated with oxidising agents, KMnO 4 and KIO 4 , as well as alkylated with benzyl bromide (BnBr) was studied. The probed reactions are strictly limited to the partly hydrogenated form of graphene in which most of the hydrogen atoms are located in activated benzylic/allylic positions. This, in turn, clearly demonstrates the presence of hydrogen attached to the graphene lattice. Attachment of the benzyl group was also unequivocally demonstrated by characteristic vibrations recorded in the surface‐enhanced Raman spectra, and all reactions were shown to proceed solely on hydrogenated graphene as evidenced by the comparison with pristine chemical vapour deposition‐grown graphene.