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Dithia[3.3]paracyclophane Core: A Versatile Platform for Triplet State Fine-Tuning and Through-Space TADF Emission

Title
Dithia[3.3]paracyclophane Core: A Versatile Platform for Triplet State Fine-Tuning and Through-Space TADF Emission
Authors
Auffray, MorganKim, Dae HyeonKim, Jong UkBencheikh, FatimaKreher, DavidZhang, QishengD'Aleo, AnthonyRibierre, Jean-CharlesMathevet, FabriceAdachi, Chihaya
Ewha Authors
Anthony Daleo
Issue Date
2019
Journal Title
CHEMISTRY-AN ASIAN JOURNAL
ISSN
1861-4728JCR Link

1861-471XJCR Link
Citation
CHEMISTRY-AN ASIAN JOURNAL vol. 14, no. 11, pp. 1921 - 1925
Keywords
cyclophanesthermally activated delayed fluorescencedonor-acceptor moleculesTADF lifetimethrough-space interactions
Publisher
WILEY-V C H VERLAG GMBH
Indexed
SCI; SCIE; SCOPUS WOS
Document Type
Article
Abstract
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.
DOI
10.1002/asia.201900401
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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