1：Experimental Design and Method Selection:

The study involved the synthesis of pyridine-functionalized Anderson POMs via post-functionalization of Anderson-NH2 with pyridinealdehydes, followed by self-assembly with copper phosphine complexes to form coordination polymers. Techniques included layer-layer diffusion for crystallization and various characterization methods.

2：Sample Selection and Data Sources:

Samples included synthesized compounds (TBA)3POM-1, (TBA)3POM-2, and their assemblies with CuP2. Data were obtained from single crystal X-ray diffraction, mass spectrometry, spectroscopy, and thermal analysis.

3：Data were obtained from single crystal X-ray diffraction, mass spectrometry, spectroscopy, and thermal analysis. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Equipment included X-ray diffractometer, MALDI-TOF MS, ESI MS, FT-IR spectrometer, UV-Vis spectrometer, NMR spectrometer, TGA, XPS, and PXRD. Materials included Anderson-NH2, pyridinealdehydes, TBA salts, CuP2, and solvents like DMF and acetonitrile.

4：Experimental Procedures and Operational Workflow:

Synthesis involved imidization reactions, self-assembly in specific mole ratios, crystallization, and characterization. Steps included reaction setup, purification, crystal growth, and data collection.

5：Data Analysis Methods:

Data were analyzed using bond valence sum calculations, spectroscopic peak assignments, and comparison with literature values for oxidation states and structural features.