The objective of this study was to evaluate the potential of fluorescence spectroscopy to identify different muscles
and to predict some physicochemical and rheological parameters. Samples were taken from three muscles
Single-walled carbon nanotubes (SWNTs) have unique
photophysical properties but low fluorescence efficiency. We
have found significant increases in the fluorescence efficiency of
individual DNA-wrapped SWNTs upon addition of reducing agents,
including dithiothreitol, Trolox, and β-mercaptoethanol. Brightening
was reversible upon removal of the reducing molecules, suggesting
that a transient reduction of defect sites on the SWNT sidewall causes
the effect. These results imply that SWNTs are intrinsically bright
emitters and that their poor emission arises from defective nanotubes.