From a phenomenological point of view, the term has been used to describe long-lived @[email protected] In mechanistic @[email protected], the term designates @[email protected] involving change in spin multiplicity, typically from triplet to singlet or vice versa. The @[email protected] from a @[email protected] to a @[email protected] is also phosphorescence.
PAC, 1984, 56, 231. (Nomenclature, symbols, units and their usage in spectrochemical analysis-Part VI: molecular luminescence spectroscopy) on page 233 [Terms] [Paper]
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2258 [Terms] [Paper]