Large enhancement of photoisomerization quantum yields by external perturbing agents

R. Korenstein, K. A. Muszkat, Ernst Fischer

Research output: Contribution to journalArticlepeer-review

Abstract

Photoisomerization rates of dixanthylidenes and 10,10′-dimethyl biacridanes are enhanced up to thousand-fold by the external perturbers oxygen, alkyl halides, and also carbon disulphide, which is much more effective than ethyl iodide. Fluorescence quantum yields are lowered by these perturbers, and it is suggested that all of them act by enhancing the rates of intersystem crossing to the triplet state of the reactants, which then undergoes efficient isomerization.

Original languageEnglish
Pages (from-to)509-513
Number of pages5
JournalChemical Physics Letters
Volume36
Issue number4
DOIs
StatePublished - 1 Dec 1975
Externally publishedYes

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