Temperature Dependence of Intersystem Crossing in Crystalline Anthracene
1970; American Institute of Physics; Volume: 52; Issue: 4 Linguagem: Inglês
10.1063/1.1673242
ISSN1520-9032
AutoresW. T. Stacy, Charles E. Swenberg,
Tópico(s)Electrochemical Analysis and Applications
ResumoBlue-light-excited delayed fluorescence is used to study the temperature dependence of monomolecular intersystem crossing in crystalline anthracene. The associated rate constant k is found to obey an equation of the form k = k1 + k2exp(− E / kT), where E = 900 ± 100 cm−1 and k2 / k1 = 800 ± 200. A calculation of the relevant Franck–Condon factors using the method developed by Siebrand gives good agreement with experiment. At temperatures less than 90°K, the delayed fluorescence appears to be dominated by trapping effects similar to those reported in red-light-excited measurements.
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