TY - JOUR
T1 - Large enhancement of photoisomerization quantum yields by external perturbing agents
AU - Korenstein, R.
AU - Muszkat, K. A.
AU - Fischer, Ernst
PY - 1975/12/1
Y1 - 1975/12/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=26144470125&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(75)80291-0
DO - 10.1016/0009-2614(75)80291-0
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AN - SCOPUS:26144470125
SN - 0009-2614
VL - 36
SP - 509
EP - 513
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4
ER -