PRES 32 |
| Individually dispersed semiconducting single-walled carbon nanotubes (SWNT) fluoresce across their band-gap at near-infrared (nIR) wavelengths. In the nIR region cell autofluorescence as well as tissue and blood absorption is low. For these reasons, SWNT have the potential to be utilized as biological sensors. SWNT fluorescence is sensitive to surface events, as the fluorescence energy of a tube can change with surface coverage. We are able to non-covalently adsorb oligonucleotide strands to the surface of SWNT, resulting in a colloidally stable solution. The addition of the complementary strand to the oligo-SWNT solution results in a fluorescence energy modulation allowing for detection of specific DNA sequences. We investigate the use and viability for using this system as a DNA sensor. |
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SWNTs From Synthesis to Application, From the Lab to the Fab: In Memory of Dr. Richard Smalley
4:30 PM-6:30 PM, Sunday, 10 September 2006 Moscone Center -- Room 305, Poster
Presidential Event |