1：Experimental Design and Method Selection:

The study involved synthesizing four isomeric dinuclear platinum complexes with different C^N ligands and characterizing their properties. Theoretical models like DFT and TD-DFT were used for calculations.

2：Sample Selection and Data Sources:

The complexes were synthesized using specific ligands and characterized using NMR, mass spectrometry, and elemental analysis.

3：List of Experimental Equipment and Materials:

Equipment included Bruker Dex-400 NMR, Varian Cray 50 UV-Vis spectrometer, Perkin-Elmer LS50B luminescence spectrometer, CHI 600A electrochemical workstation, NETZSCH STA449 TGA, and device fabrication tools like Keithley 236 source measurement unit and Photo Research PR705 optical analyzer. Materials included K2PtCl4, ligands, solvents, and device components like PEDOT:PSS, PVK, OXD-7, FIrpic, TmPyPB, Ba, Al.

4：Experimental Procedures and Operational Workflow:

Synthesis involved cyclometalating reactions and cleavage reactions. Photophysical and electrochemical measurements were conducted in solution and film forms. Devices were fabricated by spin-coating layers and evaporating cathodes, followed by EL measurements.

5：Data Analysis Methods:

Data were analyzed using Gaussian 09 for DFT calculations, and EL parameters were calculated from luminance, current density, and spectra.