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Keywords:

  • Carbon nanotubes;
  • fluorescence;
  • live-cell imaging
Thumbnail image of graphical abstract

In the best light: Plasmonic gold substrates were used to image cells by near-infrared fluorescence microscopy. Two fluorophores (single-walled carbon nanotubes (SWNTs) functionalized by the RGD sequence as well as the organic fluorophore IR800) tag cells in two different spectral regions. The fluorescence of SWNTs sandwiched between a cell membrane and a gold film was enhanced relative to the fluorescence observed on a quartz substrate (see picture).