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Sorting of CVD-grown single-walled carbon nanotubes by means of gel column chromatography

Authors

  • Frieder Ostermaier,

    1. Professur für Physikalische Chemie, Mess- und Sensortechnik, Technische Universität Dresden, Dresden, Germany
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  • Michael Mertig

    Corresponding author
    1. Professur für Physikalische Chemie, Mess- und Sensortechnik, Technische Universität Dresden, Dresden, Germany
    2. Kurt-Schwabe-Institut für Mess-und Sensortechnik e.V. Meinsberg, Kurt-Schwabe-Straße 4, Waldheim, Germany
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Abstract

We report the use of scalable gel column chromatography to sort single-walled carbon nanotubes (SWCNTs) from different production schemes according to their electronic properties. We show that this method, originally developed for HiPCO® tubes, can equally well be applied to the sorting of commercially available SWCNTs produced by CVD. We use UV–Vis spectroscopy for the quantitative characterization of the samples. It allows a fast determination of the mSWCNT and scSWCNT contents in a sample with only few preliminary information. For further prove, we assembled field-effect transistors (FETs) from enriched semiconducting suspensions by dielectrophoresis. The measurement of the IV curves approves that FETs with reasonable electrical performance can be assembled in a single preparation step.

pssb201300080-gra-0001

Schematic viewgraph of the sorting procedure using sephacryl gel.

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