The intersystem crossing process in symmetric tetrachlorobenzene
β Scribed by M.A. El-Sayed; C.R. Chen
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 504 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0009-2614
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Using symmetry selection rules it is shown that the S r + TX intersystem crossing (ISC) process in (;:on-rotating) platrar condensed aromatic compounds with lowest states of the X,ZI \* type leads to triplet states with the two unpaired electrons spinning in the molecular plane. Out-of-plane distort
Applying methods developed for single molecule spectroscopy to small ensembles, we have recorded high-resolution fluorescence-excitation spectra for pentacene in all substitutional sites of a p-terphenyl single crystal. The difference in intersystem crossing efficiency for pentacene molecules in the