Single nanotube spectral imaging to determine molar concentrations of isolated carbon nanotube species Journal Article
| Authors: | Galassi, T. V.; Jena, P. V.; Roxbury, D.; Heller, D. A. |
| Article Title: | Single nanotube spectral imaging to determine molar concentrations of isolated carbon nanotube species |
| Abstract: | Electronic and biological application's of carbon nanotubes can be highly dependent on the species (chirality) of nanotube, purity, and concentration. Existing bulk methods, such as absorbance spectroscopy, can quantify spy carbon based on spectral bands, but nanotube length distribution, defects, and carbonaceous impurities can complicate quantification of individual particles. We present a general method to relate the optical density of a photoluminescent nanotube sample to the number of individual nanotubes. By acquiring dimensional images of nanotubes embedded in a gel matrix with a reducing environment, we quantified all emissive nanotubes in a volume. Via spectral imaging, we assessed structural impurities and precisely determined molar concentrations of the (8,6) and (9,4) nanotube species. We developed an approach to obtain the molarity of any structurally enriched semiconducting single-walled carbon nanotube preparation on a pernanotube basis. |
| Keywords: | fluorescence; separation; electronics; photoluminescence; absorption cross-sections; partition; bundles |
| Journal Title: | Analytical Chemistry |
| Volume: | 89 |
| Issue: | 2 |
| ISSN: | 0003-2700 |
| Publisher: | American Chemical Society |
| Date Published: | 2017-01-17 |
| Start Page: | 1073 |
| End Page: | 1077 |
| Language: | English |
| ACCESSION: | WOS:000392458100009 |
| DOI: | 10.1021/acs.analchem.6b04091 |
| PROVIDER: | wos |
| PUBMED: | 28194986 |
| PMCID: | PMC5511500 |
| Notes: | Article -- Source: Wos |
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