Ruhlandt et al. report a plasmonic nanocavity-based method to measure absolute values of quantum yield of commonly used fluorescent proteins. The method is calibration-free, does not require knowledge about maturation or potential dark states, and works on minute amounts of sample. Authors are further able to determine lifetime and quantum yield of several fluorescent proteins, which would be a good resource for researchers working with them.
- Daja Ruhlandt
- Martin Andresen
- Alexey I. Chizhik
