Luminescence
What is fluorescence
Emission of light by a substance that has absorbed light or other radiation sources. usually from a singlet excited state
What is quenching
A process that decreases fluocescene intensity by nonradiative energy transfer through collisions or energy transfer
How do Phosphorescence and Fluorescence Differ?
Phosphorescence involves emission from a triplet state, which has a longer lifespan than that of fluorescence
O2 and halogens
What does a Jablonski diagram represent
Electronic transitions between energy states
What is the mirror image rule in fluorescence
The emission spectra are often the mirror image of the absorption spectra for transitions of the same electronic state
Define quantum yield (Φ)
the ratio of photons emitted to photons absorbed