研究目的
Investigating the impact of different fused topologies of acridine–carbazole hybrid donors on molecular configuration, photophysical and optoelectrical characters for highly efficient TADF OLEDs with low efficiency roll-off.
研究成果
The study successfully designed and synthesized two emitters based on novel acridine–carbazole hybrid donors, demonstrating the significant impact of steric hindrance and molecular conformation on TADF properties. The 23AcCz-PM emitter showed superior TADF behavior with high EQE and low efficiency roll-off, making it a promising candidate for efficient OLEDs.
研究不足
The study focuses on the impact of steric hindrance and molecular conformation on TADF properties, but does not explore the full range of potential donor-acceptor combinations or the scalability of the synthesis process for industrial applications.
1：Experimental Design and Method Selection:
The study involved the design and synthesis of two emitters, 12AcCz-PM and 23AcCz-PM, by combining TPPM acceptor with Ac–Cz-fused donors. The impact of different fused topologies on molecular configuration and properties was systematically investigated.
2：Sample Selection and Data Sources:
The emitters were synthesized and purified, and their molecular structures were confirmed through spectroscopic measurements and X-ray single-crystal analysis.
3：List of Experimental Equipment and Materials:
The synthesis involved various chemical reactions and purification techniques. The photophysical properties were investigated using UV-vis absorption, fluorescence, and phosphorescence spectra.
4：Experimental Procedures and Operational Workflow:
The synthesis routes and characterization methods were detailed, including the use of density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations for geometrical and electronic properties.
5：Data Analysis Methods:
The photophysical and optoelectrical properties were analyzed, including the measurement of PLQYs, transient PL decay curves, and EL performances.
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