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Colloidal Particles Coated and Stabilized by DNA-Wrapped Carbon Nanotubes



Erik K. Hobbie, Barry J. Bauer, J S. Stephens, Matthew Becker, P M. McGuiggan, Steven Hudson, Haonan Wang


Single-walled carbon nanotubes (SWNTs) are dispersed in water via wrapping with short segments of single-stranded DNA (ssDNA). Small-angle neutron scattering suggests that the aqueous SWNT suspensions are only marginally stable, and we exploit this to make hydrophillic colloidal particles coated and stabilized by the SWNT-ssDNA complex. Near-infrared fluorescence microscopydemonstrates the band-gap fluorescence of these SWNT-coated particles, suggesting potential routes to novel platforms and applications.
Nano Letters


carbon nanotubes, DNA, nanoparticle surfactant


Hobbie, E. , Bauer, B. , Stephens, J. , Becker, M. , McGuiggan, P. , Hudson, S. and Wang, H. (2005), Colloidal Particles Coated and Stabilized by DNA-Wrapped Carbon Nanotubes, Nano Letters, [online], (Accessed June 15, 2024)


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Created December 31, 2004, Updated October 12, 2021