Publications by authors named "Blake C Fleischer"
Article Synopsis
- The study introduces a new type of fluorophore based on few-atom silver nanoclusters that can achieve optically activated delayed fluorescence (OADF).
- OADF allows for visible light emission to occur much later after initial excitation, specifically when near-infrared light is applied to excited dark states, enhancing the visibility of the emitted light.
- This innovation could improve fluorescence detection by significantly reducing background noise, potentially benefiting other fluorophores with similar properties.
Excitation of few-atom Ag cluster fluorescence produces significant steady-state dark state populations that can be dynamically optically depopulated with long wavelength coillumination. Modulating this secondary illumination dynamically repopulates the ground state, thereby directly modulating nanodot fluorescence without modulating background. Both fast and slow modulation enable unmodulated background to be quantitatively removed in fluorescence correlation spectroscopy (FCS) through simple correlation-based averaging.
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