1：Experimental Design and Method Selection:

The study involves the design and synthesis of two pairs of blue TADF isomers with a hetero-donor configuration. The incorporation of two tert-butyl groups in the molecules is aimed at increasing molecular solubility and reducing aggregation-caused self-quenching of excitons in neat films.

2：Sample Selection and Data Sources:

The samples are the synthesized blue TADF emitters, and data sources include photophysical properties measurements, device fabrication, and performance evaluation.

3：List of Experimental Equipment and Materials:

UV-vis spectrophotometer, fluorescence spectrophotometer, FLS 920 spectrometer, Quantaurus-Tau fluorescence lifetime spectrometer, cryostat, RST 3100 electrochemical work station, HCT-2 instrument, Pyris Diamond DSC Thermal Analyzer, atomic force microscopy (AFM), source meter, luminance meter/spectrometer.

4：Experimental Procedures and Operational Workflow:

The synthesis of TADF emitters, characterization of photophysical and thermal properties, fabrication of OLED devices, and evaluation of device performance.

5：Data Analysis Methods:

Analysis of photophysical properties, thermal stability, device performance metrics such as EQE, PE, CE, and EL spectra.