Skip to main content
. Author manuscript; available in PMC: 2011 Oct 1.
Published in final edited form as: Nano Res. 2010 Oct 1;3(11):779–793. doi: 10.1007/s12274-010-0045-1

Figure 1.

Figure 1

Nanotubes and nanorods for biological applications. (a) Schematic illustration of the surface functionalization of an SWNT by C18-PMH-mPEG and phospholipid DSPE-mPEG in a solubilized suspension. Inset: photo of a stable suspension of functionalized SWNTs in water. (b) PLE spectrum of a SWNT suspension. Individual peaks correspond to semiconducting SWNTs with different chirality. (c) An AFM topography image of SWNTs. The height variation along the nanotubes in the AFM likely reflects the large differences in size of the mixed surfactants used (C18-PMH- mPEG and DSPE-PEG have molecular weights of ~1 MD and 5 kD respectively). (d) Schematic illustration of gold nanorods (AuNR) functionalized by mPEG-SH (5000 D). (e) A TEM image of AuNRs. Inset: photo of a stable suspension of functionalized AuNRs in water. (f) UV–vis–NIR absorption curves of SWNTs and AuNRs at an equal mass concentration of 0.35 mg/mL. A scatter component is superimposed for both nanoparticles