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High‐temperature transformations of coronene‐based graphene nanoribbons encapsulated in SWNTs
Author(s) -
Talyzin Alexandr V.,
Anoshkin Ilya V.,
Nasibulin Albert G.
Publication year - 2015
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201552212
Subject(s) - coronene , graphene nanoribbons , raman spectroscopy , graphene , annealing (glass) , materials science , carbon nanotube , transmission electron microscopy , nanotechnology , chemical physics , chemical engineering , chemistry , molecule , organic chemistry , composite material , optics , physics , engineering
Coronene‐based graphene nanoribbons encapsulated inside single‐walled carbon nanotubes (SWNTs) were prepared 440 °C under Ar and annealed at temperatures up to 825 °C. The structural modifications of coronene/SWNT samples were studied using Raman spectroscopy and transmission electron microscopy. Coronene and coronene‐based graphene nanoribbons are hydrogen terminated and annealing at temperatures above the stability limit of C–H bonds were expected to result in formation of new products. Indeed, Raman spectroscopy revealed the appearance of new sharp peaks after annealing of samples above 650 °C. The possible nature of encapsulated products produced by annealing of hydrogen terminated nanoribbons inside SWNTs is discussed.