Unique origin of colors of armchair carbon nanotubes.
J Am Chem Soc
; 134(10): 4461-4, 2012 Mar 14.
Article
em En
| MEDLINE
| ID: mdl-22239488
ABSTRACT
The colors of suspended metallic colloidal particles are determined by their size-dependent plasma resonance, while those of semiconducting colloidal particles are determined by their size-dependent band gap. Here, we present a novel case for armchair carbon nanotubes, suspended in aqueous medium, for which the color depends on their size-dependent excitonic resonance, even though the individual particles are metallic. We observe distinct colors of a series of armchair-enriched nanotube suspensions, highlighting the unique coloration mechanism of these one-dimensional metals.
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MEDLINE
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En
Ano de publicação:
2012
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Article