Comparative Measures of Single-Wall Carbon Nanotube Dispersion

Model composites of DNA-wrapped single-wall carbon nanotubes in poly(acrylic acid) are used to evaluate metrics of nanotube dispersion. By varying the pH of the precursor solutions, we introduce a controlled deviation from ideal behavior. On the basis of small-angle neutron scattering, changes in ne...

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Bibliographic Details
Published in:	The journal of physical chemistry. B Vol. 110; no. 47; pp. 23801 - 23805
Main Authors:	Fagan, J. A, Landi, B. J, Mandelbaum, I, Simpson, J. R, Bajpai, V, Bauer, B. J, Migler, K, Hight Walker, A. R, Raffaelle, R, Hobbie, E. K
Format:	Journal Article
Language:	English
Published:	United States American Chemical Society 30-11-2006
Subjects:	Acrylamides - chemistry DNA - chemistry Hydrogen-Ion Concentration Nanotechnology Nanotubes, Carbon - chemistry Spectrophotometry, Infrared Spectrum Analysis, Raman
Online Access:	Get full text
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Summary:	Model composites of DNA-wrapped single-wall carbon nanotubes in poly(acrylic acid) are used to evaluate metrics of nanotube dispersion. By varying the pH of the precursor solutions, we introduce a controlled deviation from ideal behavior. On the basis of small-angle neutron scattering, changes in near-infrared fluorescence intensity are strongly correlated with dispersion, while optical absorption spectroscopy and resonant Raman scattering are less definitive. Our results represent the first systematic comparison of currently accepted measures of nanotube dispersion.
Bibliography:	ark:/67375/TPS-H4QHZV74-8 istex:135C57F06FBB77517EEB9A7A489EFFB7EDEC02BC ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1520-6106 1520-5207
DOI:	10.1021/jp0647434