Carbene-functionalized single-walled carbon nanotubes and their electrical properties

Chao Liu, Qing Zhang, Francesco Stellacci, Nicola Marzari, Lianxi Zheng, Zhaoyao Zhan

Research output: Contribution to journalArticle

Abstract

Pure metallic single-walled carbon nanotubes (m-SWCNTs) are very desirable for many electrode and interconnecting applications. However, the lack of reliable processing techniques to sort m-SWCNTs from the as-synthesized SWCNT samples is an obstacle to these applications. The effects of carbene-based covalent functionalization on the electrical properties of an isolated m-SWCNT, a semiconducting (s)-SWCNT, and a mixture network of both m- and s-SWCNTs are reported. For the first time, a semiconducting-to-metallic SWCNT transition upon dichlorocarbene functionalization is observed. Interestingly, the transition is reversible upon thermal annealing under ambient conditions. The electrical properties of m-SWCNTs remain largely unaffected whereas the on-state conductivity of s-SWCNTs is greatly reduced by this process, in agreement with the relevant theoretical predictions. These findings could pave the way for fabricating large-scale SWCNT-based interconnects and electrodes in full-carbon integrated circuits. Dichlorocarbene groups covalently attach onto the sidewalls of isolated semiconducting single-walled carbon nanotubes (s-SWCNTs), metallic SWCNTs (m-SWNTs), and network SWCNTs. A reversible s- to m-SWCNT transition is observed by both Raman scattering and electrical measurements. The electrical properties of m-SWCNTs remain largely unaffected, whereas the on-state conductivity of s-SWCNTs is greatly reduced by this process, in agreement with theoretical predictions.

Original languageEnglish
Pages (from-to)1257-1263
Number of pages7
JournalSmall
Volume7
Issue number9
DOIs
Publication statusPublished - May 9 2011

Fingerprint

Carbon Nanotubes
Single-walled carbon nanotubes (SWCN)
Electric properties
Electrodes
carbene
Raman Spectrum Analysis
Integrated circuits
Raman scattering
Carbon
Hot Temperature
Annealing

Keywords

  • carbenes
  • carbon nanotubes
  • electrical properties
  • field-effect transistors
  • semiconductors

ASJC Scopus subject areas

  • Biomaterials
  • Engineering (miscellaneous)
  • Biotechnology
  • Medicine(all)

Cite this

Liu, C., Zhang, Q., Stellacci, F., Marzari, N., Zheng, L., & Zhan, Z. (2011). Carbene-functionalized single-walled carbon nanotubes and their electrical properties. Small, 7(9), 1257-1263. https://doi.org/10.1002/smll.201002307

Carbene-functionalized single-walled carbon nanotubes and their electrical properties. / Liu, Chao; Zhang, Qing; Stellacci, Francesco; Marzari, Nicola; Zheng, Lianxi; Zhan, Zhaoyao.

In: Small, Vol. 7, No. 9, 09.05.2011, p. 1257-1263.

Research output: Contribution to journalArticle

Liu, C, Zhang, Q, Stellacci, F, Marzari, N, Zheng, L & Zhan, Z 2011, 'Carbene-functionalized single-walled carbon nanotubes and their electrical properties', Small, vol. 7, no. 9, pp. 1257-1263. https://doi.org/10.1002/smll.201002307
Liu C, Zhang Q, Stellacci F, Marzari N, Zheng L, Zhan Z. Carbene-functionalized single-walled carbon nanotubes and their electrical properties. Small. 2011 May 9;7(9):1257-1263. https://doi.org/10.1002/smll.201002307
Liu, Chao ; Zhang, Qing ; Stellacci, Francesco ; Marzari, Nicola ; Zheng, Lianxi ; Zhan, Zhaoyao. / Carbene-functionalized single-walled carbon nanotubes and their electrical properties. In: Small. 2011 ; Vol. 7, No. 9. pp. 1257-1263.
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