1：Experimental Design and Method Selection:

The study involved the design and synthesis of an optimized TADF emitter (MAB) based on a previously reported emitter (MAC). The methodology included DFT calculations, electrochemical measurements, photophysical property measurements, thermal property analysis, morphological characterization, and device fabrication and measurements.

2：Sample Selection and Data Sources:

The compounds MAC and MAB were synthesized and characterized. Data were obtained from UV-vis absorption spectra, fluorescence and phosphorescence spectra, transient PL decay curves, and electroluminescence (EL) measurements.

3：List of Experimental Equipment and Materials:

Equipment included a Shimadzu UV-2700 spectrophotometer, Hitachi F-4600 fluorescence spectrophotometer, Edinburgh Instruments FLS980 spectrometer, CHI660E electrochemical analyzer, TAQ 500 thermogravimeter, NETZSCH DSC204 instrument, and atomic force microscopy (AFM). Materials included ITO glass substrates, organic layers, LiF, and Al for device fabrication.

4：Experimental Procedures and Operational Workflow:

The synthesis of MAB involved a series of chemical reactions including Suzuki reaction, self-cyclization, and Buchwald-Hartwig coupling. The OLED devices were fabricated using vacuum thermal evaporation.

5：Data Analysis Methods:

Data analysis included DFT calculations, CV measurements for electrochemical properties, and analysis of photophysical and thermal properties.