Also contains definitions of: dynamic quenching, static quenching
@[email protected] of an excited molecular entity intermolecularly by an external environmental influence (such as a @[email protected]) or intramolecularly by a substituent through a non-radiative process.
  1. When the external environmental influence (@[email protected]) interferes with the behaviour of the @[email protected] after its formation, the process is referred to as dynamic quenching. Common mechanisms include energy transfer, @[email protected], etc.
  2. When the environmental influence inhibits the @[email protected] formation the process is referred to as static quenching.
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 407 [Terms] [Paper]