Novel strategy for diameter-selective separation and functionalization of single-wall carbon nanotubes.

Journal Article (Journal Article)

The problem of separating single-wall carbon nanotubes (CNTs) by diameter and/or chirality is one of the greatest impediments toward the widespread application of these promising materials in nanoelectronics. In this paper, we describe a novel physical-chemical method for diameter-selective CNT separation that is both simple and effective and that allows up-scaling to large volumes at modest cost. Separation is based on size-selective noncovalent matching of an appropriate anchor molecule to the wall of the CNT, enabling suspension of the CNTs in solvents in which they would otherwise not be soluble. We demonstrate size-selective separation in the 1-2 nm diameter range using easily synthesized oligo-acene adducts as a diameter-selective molecular anchor. CNT field effect transistors fabricated from diameter-selected CNTs show markedly improved electrical properties as compared to nonselected CNTs.

Full Text

Duke Authors

Cited Authors

  • Tromp, RM; Afzali, A; Freitag, M; Mitzi, DB; Chen, Z

Published Date

  • February 2008

Published In

Volume / Issue

  • 8 / 2

Start / End Page

  • 469 - 472

PubMed ID

  • 18211113

Electronic International Standard Serial Number (EISSN)

  • 1530-6992

International Standard Serial Number (ISSN)

  • 1530-6984

Digital Object Identifier (DOI)

  • 10.1021/nl072437b


  • eng