1：Experimental Design and Method Selection:

The study involved synthesizing three iridium(III) complexes using different cyclometalated ligands (Hpt, Hbt, Hnbt) and an ancillary ligand (HPOXD). Methods included synthesis, purification via column chromatography, characterization using NMR, mass spectrometry, elemental analysis, photophysical measurements (absorption, PL spectra, PLQYs, lifetimes), electrochemical analysis (cyclic voltammetry), and theoretical calculations (DFT, TD-DFT). OLED devices were fabricated and characterized.

2：Sample Selection and Data Sources:

Samples included the synthesized complexes 1–3, CH3CN solutions, and doped Dictrz films. Data were obtained from experimental measurements and theoretical simulations.

3：List of Experimental Equipment and Materials:

Equipment included mass spectrometer (Waters Xevo G2-S QTof), NMR spectrometer (Bruker DPX 400), elemental analyzer (Elementar Vario EL CHN), UV–vis spectrophotometer (Agilent Cary 60), fluorospectrophotometer (Hitachi F-7000), transient spectrofluorimeter (Edinburgh Instruments FLSP920), electrochemical station (CHI 820C), and vacuum evaporation deposition system. Materials included solvents, ligands (Hpt, Hbt from J&K Chemical Ltd.), IrCl3, KPOXD, and OLED materials (HAT-CN, NPB, TCTA, Dictrz, TmPyPB, Liq, Al).

4：Experimental Procedures and Operational Workflow:

Synthesis involved refluxing IrCl3 with ligands to form chloro-bridged dimers, then reacting with KPOXD. Purification used column chromatography. Characterization included NMR, mass spectrometry, elemental analysis, absorption/PL measurements, lifetime measurements, cyclic voltammetry, and DFT calculations. OLED fabrication involved vacuum deposition of layers on ITO substrates, with device performance measured using a spectrometer and source meter.

5：Data Analysis Methods:

Data analysis included calculation of PLQYs, radiative/nonradiative decay rates, HOMO/LUMO levels from electrochemical data, and electronic transitions from TD-DFT. Statistical analysis was not explicitly mentioned.