Time-correlated Experiments Research Articles

Single molecule fluorescence: From excitation spectra to time correlation

Fluorescence excitation spectra of small and dilute samples of solid solutions at helium temperatures show the spectrally resolved lines of single solute molecules. The signal-to-noise ratio is sufficient for several spectroscopic and time-correlated experiments, which are briefly reviewed here. In particular, paramagnetic resonance within the triplet manifold was demonstrated recently for single pentacene molecules in a p-terphenyl crystal.