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Mild method for bulk enrichment of high‐aspect ratio SWNTs
Author(s) -
Vichchulada Pornnipa,
Vairavapandian Deepa,
Lay Marcus D.
Publication year - 2009
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200802236
Subject(s) - aqueous suspension , centrifuge , amorphous solid , suspension (topology) , materials science , aqueous solution , chemical engineering , carbon nanotube , characterization (materials science) , nanotechnology , amorphous carbon , carbon fibers , metal , composite material , chemistry , organic chemistry , metallurgy , composite number , physics , mathematics , homotopy , nuclear physics , pure mathematics , engineering
This manuscript presents an effective method for the removal of amorphous carbon, metal catalyst particles and bundled SWNTs, while leaving long/undamaged SWNTs in aqueous suspension. This involves multiple centrifuge cycles at low rotational centrifugal force (RCF), facilitating the formation of suspensions of pristine SWNTs with lengths up to 5 μm. Electrical characterization of deposits formed from these suspensions demonstrates the efficacy of this purification technique for creation of thin‐film semiconductive materials.(© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)