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Journal Article

Electronic properties of the triplet state of fluorene, carbazole, dibenzofuran and dibenzothiophene(X-traps)

MPS-Authors
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Goldacker,  W.
Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society;

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Schweitzer,  Dieter
Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society;

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Zimmermann,  Herbert
Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society;
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;
Zimmermann Group, Max Planck Institute for Medical Research, Max Planck Society;
Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

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https://www.sciencedirect.com/science/article/pii/0301010479851009/pdf?md5=23c25abda9c36ae6ec93d04cc1a9e687&pid=1-s2.0-0301010479851009-main.pdf
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https://doi.org/10.1016/0301-0104(79)85100-9
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Citation

Goldacker, W., Schweitzer, D., & Zimmermann, H. (1979). Electronic properties of the triplet state of fluorene, carbazole, dibenzofuran and dibenzothiophene(X-traps). Chemical Physics, 36(1), 15-26. doi:10.1016/0301-0104(79)85100-9.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-B0A9-9
Abstract
The triplet state of X-traps in neat single crystals of fluorene, carbazole, dibenzofuran and dibenzothiophene was investigated bv the method of ODMR in zero field at 1.3 K. In addition to the intersystem crossing rates, steady state populations, decay rate constants and relative radiative rate constants of the sublevels, the spin-lattice relaxation (SLR)-rates were measured. which could not be neglected even at this low temperature. In the case of dibenzothiophene a strong intramolecular heavy-atom effect due to the sulphur atom was observed which allowed direct So → T1 excitation.