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Fluorescence Quenching by Oxygen: “Debunking” a Classic Rule
Author(s) -
Cabrerizo Franco M.,
Arnbjerg Jacob,
Denofrio M. Paula,
ErraBalsells Rosa,
Ogilby Peter R.
Publication year - 2010
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201000002
Subject(s) - intersystem crossing , quenching (fluorescence) , fluorescence , excited state , photochemistry , chemistry , oxygen , state (computer science) , process (computing) , computer science , physics , organic chemistry , algorithm , optics , atomic physics , singlet state , operating system
New clothes for an old player: Oxygen‐induced deactivation of a fluorescent state can, in fact, proceed via S 1 →S 0 internal conversion and effectively compete with S 1 →T 1 intersystem crossing (see figure). It has long been considered that only the latter process occurs. An O 2 ‐dependent process that does not produce a triplet excited state can have significant photochemical and photobiological consequences.