Balancing TADF Properties in π-Bridged Donor–Acceptor Systems by Sterical Constraints: The Best of Three Worlds
Jeremy M. Kaminski,
Tobias Böhmer,
Christel M. Marian
Abstract:Key parameters that steer the efficiency of thermally
activated
delayed fluorescence (TADF) are the energetic splitting ΔE
ST between S1 and T1,
their mutual spin–orbit coupling (SOC) and the transition dipole
strength μ of the S1 emission. Small ΔE
ST values, resonable SOC and high values of
μ are difficult to achieve simultaneously. Using high-level
quantum chemical methods, we have investigated the course of these
parameters as functions of the donor–acceptor torsion angle
in a series of conformationally co… Show more
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