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Carbon nanotubes: Chemically Induced, Thermally Controlled Peel‐Off of the External Walls of Double‐Walled Carbon Nanotubes (Small 24/2010)
Author(s) -
Karousis Nikolaos,
Kobayashi Keita,
Shinohara Hisanori,
Tagmatarchis Nikos
Publication year - 2010
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201090087
Subject(s) - carbon nanotube , surface modification , materials science , nanotechnology , annealing (glass) , thermal stability , chemical engineering , thermal , carbon fibers , selective chemistry of single walled nanotubes , nanotube , composite material , optical properties of carbon nanotubes , composite number , physics , meteorology , engineering
The cover picture shows the thermally induced peel‐off of the external wall of aryl‐functionalized double‐walled carbon nanotubes (DWNTs). It is known that the covalent functionalization of DWNTs introduces moieties onto the surface of the outer tubes, while the electronic properties of the inner tubes remain intact. At the same time, the functionalization process creates defects at the external framework of the DWNTs, thus causing disruption of the continuous π‐electronic network. Annealing of the functionalized DWNTs results, initially, in thermal decomposition of the grafted aryl units—leaving defect sites on the outer layer of the DWNTs—followed then, by exposure of the inner walls as individual single‐walled carbon nanotubes (SWNTs) possessing larger diameters as compared to the corresponding inner tubes of the pristine DWNTs. The exposed SWNTs lack thermal stability and seem to be destroyed upon further thermal treatment. For more information, please read the Communication “Chemically Induced, Thermally Controlled Peel‐Off of the External Walls of Double‐Walled Carbon Nanotubes” by H. Shinohara, N. Tagmatarchis, and co‐workers, beginning on page 2826 .