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Dithia[3.3]paracyclophane Core: A Versatile Platform for Triplet State Fine-Tuning and Through-Space TADF Emission
- Dithia[3.3]paracyclophane Core: A Versatile Platform for Triplet State Fine-Tuning and Through-Space TADF Emission
- Auffray, Morgan; Kim, Dae Hyeon; Kim, Jong Uk; Bencheikh, Fatima; Kreher, David; Zhang, Qisheng; D'Aleo, Anthony; Ribierre, Jean-Charles; Mathevet, Fabrice; Adachi, Chihaya
- Ewha Authors
- Anthony Daleo
- Issue Date
- Journal Title
- CHEMISTRY-AN ASIAN JOURNAL
- CHEMISTRY-AN ASIAN JOURNAL vol. 14, no. 11, pp. 1921 - 1925
- cyclophanes; thermally activated delayed fluorescence; donor-acceptor molecules; TADF lifetime; through-space interactions
- WILEY-V C H VERLAG GMBH
- SCI; SCIE; SCOPUS
- Document Type
- Thermally activated delayed fluorescence (TADF) based on through-space donor and acceptor interactions constitute a recent and promising approach to develop efficient TADF emitters. Novel TADF isomers using a dithia[3.3]-paracyclophane building block as a versatile 3D platform to promote through-space interactions are presented. Such a 3D platform allows to bring together the D and A units into close proximity and to probe the effect of their orientation, contact site and distance on their TADF emission properties. This study provides evidence that the dithia[3.3]paracyclophane core is a promising platform to control intramolecular through-space interactions and obtain an efficient TADF emission with short reverse-intersystem crossing (RISC) lifetimes. In addition, this study demonstrates that this design can tune the energy levels of the triplet states and leads to an upconversion from (CT)-C-3 to (LE)-L-3 that promotes faster and more efficient RISC to the (CT)-C-1 singlet state.
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