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Sorting of CVD‐grown single‐walled carbon nanotubes by means of gel column chromatography
Author(s) -
Ostermaier Frieder,
Mertig Michael
Publication year - 2013
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201300080
Subject(s) - carbon nanotube , sorting , materials science , dielectrophoresis , nanotechnology , transistor , carbon fibers , chromatography , chemistry , microfluidics , computer science , composite number , programming language , physics , quantum mechanics , voltage , composite material
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 I – V curves approves that FETs with reasonable electrical performance can be assembled in a single preparation step. Schematic viewgraph of the sorting procedure using sephacryl gel.