Physical chemical characterization of DNA–SWNT suspensions and associated composites
Source abstract
Abstract
Abstract Suspensions of DNA–SWNT composites have been prepared as part of an ongoing study of individualized single-walled carbon nanotubes (SWNTs) using chemically modified or unmodified single-stranded DNA as the surfactant. We report optical absorption, photoluminescence (PL) and Raman spectra which are used to distinguish the types of carbon nanotubes (CNTs) present in the suspensions. Pyrenyl groups appended to the DNA affect the appearance of absorption and photoluminescence spectra. Furthermore, TEM has been used to characterize DNA–SWNT composites deposited on grids and flushed with a volatile aqueous buffer. Electron micrographs provide preliminary evidence for helical wrapping of single strand DNA (ssDNA) around individual CNTs and thin ropes of CNTs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Nanopore and Nanochannel Transport Studies · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. Filamentous growth of carbon through benzene decomposition10.1016/0022-0248(76)90115-9 ↗
2. Single-shell carbon nanotubes of 1-nm diameter10.1038/363603a0 ↗
3. Cobalt-catalysed growth of carbon nanotubes with single-atomic-layer walls10.1038/363605a0 ↗
4. Single-wall carbon nanotubes10.1088/2058-7058/13/6/26 ↗
5. A recipe for strength10.1038/20326 ↗
6. Fiedler B, Gojny FH, Wichmann MHG, Nolte MCM, Schulte K, Fundamental aspects of nano-reinforced composites, Compos Sci Technol 2005; in press.10.1016/j.compscitech.2005.01.014 ↗
7. DNA-assisted dispersion and separation of carbon nanotubes10.1038/nmat877 ↗
8. A structure for deoxyribose nucleic acid10.1038/171737a0 ↗
9. Molecular structure of deoxypentose nucleic acids10.1038/171738a0 ↗
10. Molecular configuration in sodium thymonucleate10.1038/171740a0 ↗
11. DNA-functionalization of single-walled carbon nanotubes10.1088/0957-4484/13/5/311 ↗
12. Advances in the science and technology of carbon nanotubes and their composites: a review10.1016/S0266-3538(01)00094-X ↗
13. DNA dissolves single-walled carbon nanotubes in water10.1246/cl.2003.456 ↗
14. Structure-based carbon nanotube sorting by sequence-dependent DNA assembly10.1126/science.1091911 ↗
15. DNA-Templated carbon nanotube field-effect transistors10.1126/science.1091022 ↗
16. Clamping down on weak terminal base pairs: oligonucleotides with molecular caps as fidelity-enhancing elements at the 5′- and 3′-terminal residues10.1093/nar/gkh600 ↗
17. Gas-phase production of carbon single-walled nanotubes from carbon dioxide via the HiPco process: a parametric study10.1116/1.1380721 ↗
18. Raman spectroscopy of individual single-walled carbon nanotubes from various sources10.1021/jp0441745 ↗
19. Structure-assigned optical spectra of single-walled carbon nanotubes10.1126/science.1078727 ↗
20. Near-infrared photoluminescence of single-walled carbon nanotubes prepared by the laser vaporization method10.1021/jp027096z ↗
21. Recent advances in carbon nanotube photophysics10.1016/j.physe.2005.06.007 ↗
22. Chiral selectivity in the charge-transfer bleaching of single-walled carbon-nanotube spectra10.1038/nmat1367 ↗
23. Reversible, band-gap-selective protonation of single-walled carbon nanotubes in solution10.1021/jp027664a ↗
24. Supramolecular self-assembly of lipid derivatives on carbon nanotubes10.1126/science.1080848 ↗
25. Individually suspended single-walled carbon nanotubes in various surfactants10.1021/nl034524j ↗
26. Persistence length control of the Polyelectrolyte layer-by-layer self-assembly on carbon nanotubes10.1021/ja053060j ↗