Cho, Seungrae Lee, Hyemi Je, Sieun Lee, Juho Bae, Suwon Kim, Tae Ann Lee, Jaejun 2025-07-18T06:30:18Z 2025-07-18T06:30:18Z 2025-07-18 2025-09 0142-9418 https://pubs.kist.re.kr/handle/201004/152775 The development of materials capable of shock wave energy dissipation (SWED) is critical for modern protective applications. In this study, metallosupramolecular poly(dimethylsiloxane) (PDMS) networks cross-linked with Zn2+, Cu2+, and Ni2+ ions and imidazole ligands were designed to enhance SWED by leveraging the dynamic nature of metal-ligand coordination bonds. A laser-induced shock wave technique revealed that Cu2+ cross-linked PDMS exhibited superior SWED performance, likely due to coordination rearrangement dynamics occurring within a relevant timescale for shock wave dissipation. Time-temperature superposition (TTS) analysis indicated that while associative ligand exchange may assist in shock attenuation, metal-ligand bond dissociation plays a more dominant role under extreme shock conditions. DFT calculations further demonstrated that coordination geometry significantly influences SWED performance, with Cu2+ in square planar (trans) coordination exhibiting greater rupture susceptibility. These findings highlight the tunability of metal-ligand interactions as an effective strategy for optimizing energy dissipation in metallosupramolecular polymers. Additionally, they provide a comprehensive SWED mechanism analysis by synergistically integrating a laser-induced shock wave test and DFT calculations. English Elsevier BV Enhancing shock wave energy dissipation in metallosupramolecular polymer by tuning metal-imidazole coordination interactions Article 10.1016/j.polymertesting.2025.108885 1 Polymer Testing, v.150 Polymer Testing 150 Y scie scopus 001517108000001 Materials Science, Characterization & Testing Polymer Science Materials Science Polymer Science Article SACRIFICIAL BONDS BLAST MITIGATION HYDROGELS VISCOELASTIC PROPERTIES STRENGTH PDMS Metallosupramolecular Metal-ligand High-strain-rate PDMS Shock wave Energy dissipation