Colloidal particles coated and stabilized by DNA-wrapped carbon nanotubes.
Single-walled carbon nanotubes (SWNTs) are dispersed in water via wrapping with short segments of single-stranded DNA (ssDNA). Small angle neutron scattering suggests a power-law exponent that is consistent with clustered nanotubes and hence marginal stability. The SWNT-ssDNA complex is used to stabilize dispersions of hydrophilic colloidal particles with the nanotubes adhered to the surface of the colloids. Near-infrared fluorescence microscopy demonstrates the interfacial band-gap fluorescence of these SWNT-coated particles, suggesting potential routes to novel platforms and applications.
Hobbie
E K
EK
Bauer
B J
BJ
Stephens
J
J
Becker
M L
ML
McGuiggan
P
P
Hudson
S D
SD
Wang
H
H
D003102:Colloids; D004277:DNA, Single-Stranded / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon
D003102:Colloids; D004277:DNA, Single-Stranded; D037742:Nanotubes, Carbon