The overall efficiency of free-triplet generation from intramolecular singlet fission is limited by the efficiency of the dissociation of spatially adjacent triplet pairs. Now, using transient magneto-optical spectroscopy, it has been shown that this limitation can be overcome by promoting a pathway mediated by spatially separated triplet pairs in tetracene trimers and tetramers.
- Zhiwei Wang
- Heyuan Liu
- Min Xiao