{1461} revision 3 modified: 05-28-2019 16:02 gmt

PMID-30997987 Chemistry of Photosensitive Fluorophores for Single-Molecule Localization Microscopy

  • Excellent review of all the photo-convertable, photo-switchable, and more complex (photo-oxidation or reddening) of both proteins and small molecule fluorophore.
    • E.g. PA-GFP is one of the best -- good photoactivation quantum yield, good N ~ 300
    • Other small molecules, like Alexa Fluor 647 have a photon yield > 6700, which can be increased with triplet quenchers and antioxidants.
  • Describes the chemical mechanism of the various photo switching -- review is targeted at (bio)chemists interested in getting into imaging.
  • Emphasize that critical figures of merit are photoactivation quantum yield Φ pa\Phi_{pa} and N, overall photon yield before photobleaching.
  • See also Colorado lecture