Synthesis, CrystalStructure, and Properties of aPair of 3D Chiral Cu(II) Coordination Polymer Enantiomers Based on5‑(1-Carboxyethoxy) Isophthalic Acid

We synthesized two enantiomeric three-dimensional chiral coordination polymers, [Cu₈((R)-CIA)₄(H₂O)₉]·3H₂O (<b>1-D</b>) and [Cu₈((S)-CIA)₄(H₂O)₉]·3H₂O (<b>1-L</b>), using 5-(1-carboxyethoxy) isophthalic acid as the organic linker. Crystal structure analysis revealed that both <b>1-D</b> and <b>1-L</b> exhibit complex and fascinating three-dimensional self-penetrating structures. Further characterization of the properties revealed that <b>1-D</b> exhibits notable photoluminescence (PL) and magnetic behaviors. Specifically, photoluminescence measurements showed that when excited at 390 nm (λ_ex = 390 nm), <b>1-D</b> displays maximum emission peaks at 445 and 470 nm, indicating a strong fluorescence emission. The magnetic susceptibility measurements reveal that these coordination polymers exhibit pronounced antiferromagnetic behavior. By integrating the crystal structure with the performance analysis, it is demonstrated that <b>1-D</b> and <b>1-L</b>, as chiral coordination polymers, not only show distinct photoluminescent and magnetic characteristics but also provide crucial experimental and theoretical insights for the development and application of chiral functional materials. These research findings provide a solid foundation for the future development of multifunctional materials based on chiral metal coordination polymers, which are expected to play a significant role in areas such as optoelectronic devices, magnetic materials, and catalysis.