Evidence of multiwall carbon nanotube deformation caused by poly(3-hexylthiophene) adhesion
Giulianini, Michele, Waclawik, Eric R., Bell, John M., De Crescenzi, Maurizio, Castrucci, Paola, Scarselli, Manuela, Diociauti, Marco, Casciardi, Stefano, & Motta, Nunzio (2011) Evidence of multiwall carbon nanotube deformation caused by poly(3-hexylthiophene) adhesion. The Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, p. 110307161506073.
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We show that when a soft polymer like Poly(3-hexyl-thiophene) wraps multiwall nanotubes by coiling around the main axis, a localized deformation of the nanotube structure is observed. High resolution transmission electron microscopy shows that radial compressions of about 4% can take place, and could possibly lead to larger interlayer distance between the nanotube inner walls and reduce the innermost nanotube radius. The mechanical stress due to the polymer presence was confirmed by Raman spectroscopic observation of a gradual upshift of the carbon nanotube G-band when the polymer content in the composites was progressively increased. Vibrational spectroscopy also indicates that charge transfer from the polymer to the nanotubes is responsible for a peak frequency relative downshift for high P3HT-content samples. Continuously acquired transmission electron microscopy images at rising temperature show the MWCNT elastic compression and relaxation due to polymer rearrangement on the nanotube surface.
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|Item Type:||Journal Article|
|Keywords:||Carbon Nanotubes, Poly(3-hexyl-thiophene), HRTEM, Raman|
|Subjects:||Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanomaterials (100708)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanoscale Characterisation (100712)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
|Copyright Owner:||Copyright 2011 American Chemical Society|
|Copyright Statement:||This article is freely available from the American Chemical Society website 12 months after the publication date. See links to publisher website in this record|
|Deposited On:||28 Mar 2011 00:47|
|Last Modified:||31 Mar 2011 02:24|
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