1：Experimental Design and Method Selection:

The study involved microwave-assisted synthesis of the ligand and complex, followed by characterization using spectroscopic, electrochemical, and theoretical methods to analyze structural features, photophysical properties, and electrochemical behavior.

2：Sample Selection and Data Sources:

Samples included synthesized hpbp ligand and [Mn(hpbp)] complex, with materials sourced from Sigma-Aldrich and other suppliers, using solvents like ethanol and dichloromethane for various measurements.

3：List of Experimental Equipment and Materials:

Equipment included microwave reactor (Milestone StartSYNTH), NMR spectrometer (Bruker Avance DPX), FT-IR spectrometer (PerkinElmer Frontier), Raman spectrometer (HORIBA Jobin-Yvon LabRAM), UV-Vis spectrophotometer (Agilent Cary 60), fluorescence spectrophotometer (Shimadzu RF-6000), potentiostat (Autolab type III), and computational software (Gaussian 09). Materials included hydrogenated cardanol, o-phenylenediamine, Mn(II) acetate, and various solvents.

4：9). Materials included hydrogenated cardanol, o-phenylenediamine, Mn(II) acetate, and various solvents. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: Synthesis involved microwave heating for specific times and temperatures, followed by purification. Characterization included NMR, FT-IR, Raman, UV-Vis, fluorescence, cyclic voltammetry, and DFT calculations. Procedures detailed solvent preparation, sample handling, and data collection steps.

5：Data Analysis Methods:

Data were analyzed using software like NOVA 2.0 for electrochemistry, GaussSum for computational outputs, and statistical methods for spectral deconvolution and linear regressions in electrochemical studies.