TY - JOUR
T1 - Dithia[3.3]paracyclophane Core
T2 - A Versatile Platform for Triplet State Fine-Tuning and Through-Space TADF Emission
AU - Auffray, Morgan
AU - Kim, Dae Hyeon
AU - Kim, Jong Uk
AU - Bencheikh, Fatima
AU - Kreher, David
AU - Zhang, Qisheng
AU - D'Aléo, Anthony
AU - Ribierre, Jean Charles
AU - Mathevet, Fabrice
AU - Adachi, Chihaya
N1 - Funding Information:
This research was supported in part by the CNRS (PICS N8 8085), France, the JST ERATO Grant Number JPMJER1305, Japan, the JSPS Core-to-Core Program, A. Advanced Research Networks and the JSPS KAKENHI Grant Number 17H01232.
Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/6/3
Y1 - 2019/6/3
N2 - 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 3CT to 3LE that promotes faster and more efficient RISC to the 1CT singlet state.
AB - 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 3CT to 3LE that promotes faster and more efficient RISC to the 1CT singlet state.
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U2 - 10.1002/asia.201900401
DO - 10.1002/asia.201900401
M3 - Article
C2 - 30912261
AN - SCOPUS:85065212745
SN - 1861-4728
VL - 14
SP - 1921
EP - 1925
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
IS - 11
ER -