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Giant cationic polyelectrolytes generated via electrochemical oxidation of single-walled carbon nanotubes
- Source :
- Nature communications. 4
- Publication Year :
- 2013
-
Abstract
- Previously, reduced single-walled carbon nanotube anions have been used for effective processing and functionalization. Here we report individually separate and distinct (that is, discrete) single-walled carbon nanotube cations, directly generated from a pure anode using a non-aqueous electrochemical technique. Cyclic voltammetry provides evidence for the reversibility of this nanoion electrochemisty, and can be related to the complex electronic density of states of the single-walled carbon nanotubes. Fixed potentiostatic oxidation allows spontaneous dissolution of nanotube cations ('nanotubium'); Raman spectroscopy and transmission electron microscopy show that sequential fractions are purified, separating amorphous carbon and short, defective single-walled carbon nanotubes, initially. The preparation of nanotubium, in principle, enables a new family of nucleophilic grafting reactions for single-walled carbon nanotubes, exploited here, to assemble nanotubes on amine-modified Si surfaces. Other nanoparticle polyelectrolyte cations may be anticipated.
- Subjects :
- Nanotube
Multidisciplinary
Chemistry
General Physics and Astronomy
Nanotechnology
General Chemistry
Carbon nanotube
Electrochemistry
General Biochemistry, Genetics and Molecular Biology
law.invention
Cationic polyelectrolytes
Condensed Matter::Materials Science
Nucleophile
Chemical engineering
law
Covalent bond
Reactivity (chemistry)
Physics::Chemical Physics
Subjects
Details
- ISSN :
- 20411723
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Nature communications
- Accession number :
- edsair.doi.dedup.....51ea6decb94b7f7a101c7d957c50eef6