The Polymer Society of Korea

Abstract

Coordination polymers (CPs) are crystalline extended structures constructed through coordination interactions between metal ions and organic ligands. Owing to their structural tunability, CPs have attracted considerable attention for applications in areas such as gas separation, catalysis, and chemical sensing. In this work, we report cadmium(II)-based coordination polymers incorporating carboxylate and olefin ligands that exhibit responsiveness to external stimuli. The Cd(II) CPs were synthesized under solvothermal conditions using different solvent environments. Notably, compounds 1 and 3 display distinct structural transformations triggered by thermal and photo stimuli, respectively. These transformations were elucidated by single-crystal X-ray diffraction analysis and proceed via a single-crystal-to-single-crystal (SCSC) process. The observed stimuli-responsive structural adaptability highlights the potential of these Cd(II) coordination polymers as promising platforms for the design of functional responsive materials.