C–H···I assisted 2D Cd(II)-coordination polymer: Remarkable photocatalytic degradation of rose bengal dye and efficient colorimetric recognition of La3+, and ClO4-

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In this work, we report the effective synthesis, by use of solvothermal procedures, of a new coordination polymer, [CdI2(DPP)]n (1), where DPP stands for 1,3-Di(4-pyridyl)propane. The structural characteristics of [CdI2(DPP)]n (1) were analysed utilizing a variety of analytical techniques, including SCXRD, FT-IR, TGA, SEM-EDAX, elemental mapping analysis and powder X-ray diffraction. Our results showed the existence of a 2D supramolecular network created by hydrogen bonding interactions between C4–H4—-I2 and a 1D coordination polymeric chain. The [CdI2(DPP)]n (1) network has promising luminous sensing properties toward inorganic anions and metal cations with quenching efficiencies 96.89 % and 95.51 % for La3+ and ClO4− respectively. Moreover, [CdI2(DPP)]n (1) achieves an exceptional degradation efficiency of 97.3 % when used as a photocatalytic degradant of the potentially hazardous organic dye Rose Bengal, outperforming other dyes in this regard. Hence, this new coordination polymer holds significant promise for applications in sensing and environmental remediation.