EPJ Web Conf.
Volume 205, 2019XXI International Conference on Ultrafast Phenomena 2018 (UP 2018)
|Number of page(s)||3|
|Section||Ultrafast Photochemistry and Photosynthesis|
|Published online||16 April 2019|
Unveiling the concentration dependent direct triplet formation via singlet fission in a tetracene derivative
1 Physikalisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Germany
2 Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Germany
3 Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Germany
* Corresponding Author: Marcus.Motzkus@pci.uni-heidelberg.de
Published online: 16 April 2019
Singlet fission is slowed down on diffusional timescales in highly concentrated solutions compared to thin films for a tetracene-like molecule. The underlying mechanism suggests competing intersystem crossing and singlet fission, where in the latter singlets are converted directly to triplets without an intermediate excimer state.
© The Authors, published by EDP Sciences, 2019
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