1：Experimental Design and Method Selection:

The study involved synthesizing cuprous complexes using different benzoxazole ligands (2-PBO, 4-PBO, BBO) and copper halides/pseudohalides (CuI, CuBr, CuSCN) through methods like natural volatilization, solvothermal, and interfacial reactions under nitrogen atmosphere. Structural analysis was performed using X-ray crystallography, and photophysical properties were measured.

2：Sample Selection and Data Sources:

Ligands were synthesized based on reported methods, and complexes were prepared with specific molar ratios. Single crystals were grown for X-ray diffraction studies.

3：List of Experimental Equipment and Materials:

Equipment included Carlo Erba 1106 elemental analyzer, Nicolet FT-VERTEX 70 spectrometer, Mercury plus 400 MHz NMR spectrometer, Shimadzu UV-2600 spectrometer, Siemens D5005 diffractometer, Edinburgh FLS980 spectrometer, and Bruker APEXII area detector. Materials included CuI, CuBr, CuSCN, NH4SCN, solvents like MeOH, CH3CN, DMF, DMSO, and synthesized ligands.

4：Experimental Procedures and Operational Workflow:

For each complex, ligands and copper salts were mixed in specific solvents, heated or allowed to evaporate to form crystals. Crystals were characterized by elemental analysis, IR, NMR, UV-Vis, PXRD, and photoluminescence measurements. X-ray data collection and refinement were done using SMART, SAINT, and SHELXTL programs.

5：Data Analysis Methods:

Data were analyzed using software for crystallography (e.g., SHELXTL), and photophysical parameters like emission lifetimes and quantum yields were calculated using standard equations.