Post-fabrication reconfiguration of hydrogels through thermodynamic asymmetry in dynamic chemistry.

Thermodynamic asymmetry in dynamic covalent chemistry enables near-complete reconfiguration of hydrogels after formation, with over 90% bond exchange efficiency.

• Why it matters: This approach addresses the challenge of reprogramming soft materials post-synthesis, which is crucial for developing adaptive systems with tunable properties.
• What they did: The study employed hydrazone and oxime chemistry to demonstrate rapid, aqueous, near-quantitative bond exchange, supported by kinetic modeling revealing hydrolytic pathways and concentration effects.
• The result: This method allows for topological, mechanical, and functional reprogramming of hydrogels without network breakdown, paving the way for versatile, reconfigurable materials and surface functions.