Lecture9

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More Complex Electronic Processes:

More Complex Electronic Processes Fluorescence: absorption of radiation to an excited state, followed by emission of radiation to a lower state of the same multiplicity. Phosphorescence: absorption of radiation to an excited state, followed by emission of radiation to a lower state of different multiplicity Singlet state: spins are paired, no net angular momentum (and no net magnetic field) Triplet state: spins are unpaired, net angular momentum (and net magnetic field)

Fluorescence spectroscopy:

Fluorescence spectroscopy Fluorescence spectroscopy is a type of electromagnetic spectroscopy which analyzes fluorescence from a sample Absorption of radiation to an excited state, followed by emission of radiation to a lower state of the same multiplicity.

Slide 3:

Fluorescence Phosphorescence

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