Metal nanoparticles reveal the organization of single-walled carbon nanotubes in bundles

Raul D. Rodriguez, Thomas Blaudeck, Jana Kalbacova, Evgeniya Sheremet, Steffen Schulze, David Adner, Sascha Hermann, Michael Hietschold, Heinrich Lang, Stefan E. Schulz, Dietrich R.T. Zahn

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7 Citations (Scopus)

Abstract

Single-walled carbon nanotubes (SWCNTs) were decorated with metal nanoparticles. Using a complementary analysis with spatially resolved micro-Raman spectroscopy, high resolution transmission electron microscopy, electron diffraction, and tip-enhanced Raman spectroscopy, we show that the SWCNTs form bundles in which smaller diameter SWCNTs are the ones preferentially affected by the presence of Au and Ag nanoparticles. This result is exploited to evaluate the structural organization of SWCNTs with mixed chiralities in bundles, leading us to postulate that smaller diameter SWCNTs surround larger ones. We found that this effect occurs for very distinct scenarios including SWCNTs both in nanometer thin films and in field effect transistor configurations at the wafer-level, suggesting a universal phenomenon for SWCNTs deposited from dispersions.

Original languageEnglish
Pages (from-to)15753-15758
Number of pages6
JournalRSC Advances
Volume6
Issue number19
DOIs
Publication statusPublished - 1 Jan 2016
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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