1：Experimental Design and Method Selection:

The study involved the synthesis of a thermo-stable three-dimensional network [Cd2(BPDPE)2(1,2-H2bdc)2]n (1) under solvothermal conditions. The methodology included the use of BPDPE and 1,2-H2bdc as ligands to construct the LCP.

2：Sample Selection and Data Sources:

The materials used included 4,4′-bis(pyridyl)diphenyl ether (BPDPE), 1,2-benzenedicarboxylic acid (1,2-H2bdc), and Cd(NO3)2·4H2O. The solvents and reagents were commercially available without further purification.

3：2O. The solvents and reagents were commercially available without further purification. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Equipment used included a Bruker D8 Advance X-ray diffractometer, Perkin-Elmer 240C elemental analyzer, FT-IR spectrometer, Perkin Elmer thermogravimetric analyzer, Hitachi F-4600 spectrometer, and Micrometrics ASAP 2010 for BET surface area measurements.

4：Experimental Procedures and Operational Workflow:

The synthesis involved mixing 1,2-H2bdc and BPDPE in water, adjusting the pH, adding Cd(NO3)2·4H2O, and heating in a Teflon-lined autoclave. The product was characterized by PXRD, TGA, and fluorescence spectroscopy.

5：Data Analysis Methods:

The luminescent sensing properties were analyzed using the Stern-Volmer equation to determine quenching constants (Ksv) for TNP and Fe3+.