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Evidence of Multiwall Carbon Nanotube Deformation Caused by Poly(3-hexylthiophene) Adhesion
- Source :
- The Journal of Physical Chemistry C. 115:6324-6330
- Publication Year :
- 2011
- Publisher :
- American Chemical Society (ACS), 2011.
-
Abstract
- 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.
- Subjects :
- chemistry.chemical_classification
Nanotube
Materials science
Polymer
Carbon nanotube
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Settore FIS/03 - Fisica della Materia
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
law.invention
Optical properties of carbon nanotubes
Condensed Matter::Materials Science
symbols.namesake
General Energy
chemistry
Transmission electron microscopy
law
symbols
Physical and Theoretical Chemistry
Composite material
Deformation (engineering)
High-resolution transmission electron microscopy
Raman spectroscopy
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 115
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi.dedup.....b21d216ae7514f665a47d51a2e2f3ead