Li, Han ; Gordeev, Georgy ; Wasserroth, Sören ; Chakravadhanula, Venkata Sai Kiran ; Neelakandhan, Shyam Kumar Chethala ; Hennrich, Frank ; Jorio, Ado ; Reich, Stephanie ; Krupke, Ralph ; Flavel, Benjamin Scott (2017)
Inner- and outer-wall sorting of double-walled carbon nanotubes.
In: Nature Nanotechnology, 12 (12)
doi: 10.1038/nnano.2017.207
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Double-walled carbon nanotubes (DWCNTs) consist of two coaxially aligned single-walled carbon nanotubes (SWCNTs), and previous sorting methods only achieved outer-wall electronic-type selectivity. Here, a separation technique capable of sorting DWCNTs by semiconducting (S) or metallic (M) inner- and outer-wall electronic type is presented. Electronic coupling between the inner and outer wall is used to alter the surfactant coating around each of the DWCNT types, and aqueous gel permeation is used to separate them. Aqueous methods are used to remove SWCNT species from the raw material and prepare enriched DWCNT fractions. The enriched DWCNT fractions are then transferred into either chlorobenzene or toluene using the copolymer PFO–BPy to yield the four inner@outer combinations of M@M, M@S, S@M and S@S. The high purity of the resulting fractions is verified by absorption measurements, transmission electron microscopy, atomic force microscopy, resonance Raman mapping and high-density field-effect transistor devices.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Li, Han ; Gordeev, Georgy ; Wasserroth, Sören ; Chakravadhanula, Venkata Sai Kiran ; Neelakandhan, Shyam Kumar Chethala ; Hennrich, Frank ; Jorio, Ado ; Reich, Stephanie ; Krupke, Ralph ; Flavel, Benjamin Scott |
| Art des Eintrags: | Bibliographie |
| Titel: | Inner- and outer-wall sorting of double-walled carbon nanotubes |
| Sprache: | Englisch |
| Publikationsjahr: | 2 Oktober 2017 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nature Nanotechnology |
| Jahrgang/Volume einer Zeitschrift: | 12 |
| (Heft-)Nummer: | 12 |
| DOI: | 10.1038/nnano.2017.207 |
| URL / URN: | https://doi.org/10.1038/nnano.2017.207 |
| Kurzbeschreibung (Abstract): | Double-walled carbon nanotubes (DWCNTs) consist of two coaxially aligned single-walled carbon nanotubes (SWCNTs), and previous sorting methods only achieved outer-wall electronic-type selectivity. Here, a separation technique capable of sorting DWCNTs by semiconducting (S) or metallic (M) inner- and outer-wall electronic type is presented. Electronic coupling between the inner and outer wall is used to alter the surfactant coating around each of the DWCNT types, and aqueous gel permeation is used to separate them. Aqueous methods are used to remove SWCNT species from the raw material and prepare enriched DWCNT fractions. The enriched DWCNT fractions are then transferred into either chlorobenzene or toluene using the copolymer PFO–BPy to yield the four inner@outer combinations of M@M, M@S, S@M and S@S. The high purity of the resulting fractions is verified by absorption measurements, transmission electron microscopy, atomic force microscopy, resonance Raman mapping and high-density field-effect transistor devices. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Molekulare Nanostrukturen 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 07 Feb 2018 06:43 |
| Letzte Änderung: | 07 Feb 2018 06:43 |
| PPN: | |
| Sponsoren: | The authors acknowledge the experimental assistance of J. Zaumseil and S. Grimm and thank K. Moore and A. Blanch for discussions. B.S.F. acknowledges support from the Deutsche Forschungsgemeinschaft (DFG, under grants nos. FL 834/1-1 and FL 834/2-1)., R. K. acknowledges funding by the DFG under INST 163/354-1 FUGG. R.K. and F.H. acknowledge support by the Helmholtz Association through the STN programme. G.G. and S.R. acknowledge the German Research Foundation (DFG, via SFB 658, subproject A6) and Focus, Focus Area NanoScale of the Freie Universität Berlin for financial support. |
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