Stereochemically Purified trans-Dihydroxy-Substituted Cage Silsesquioxane-Based Bisurea Supramolecular Polymer Materials Enable Metastable-to-Thermodynamic Phase Evolution and Enhanced Modulus

Key Points

• The aim is to investigate the thermal behavior and phase evolution in silsesquioxane-based polymers.
• Stereochemical purification of trans-dihydroxy-substituted cage silsesquioxane.
• Characterization of thermal behavior associated with phase transitions.
• Comparison with properties of conventional covalent polymers.
• Enhanced modulus observed during phase transitions.
• Identification of metastable and thermodynamic states.
• Distinctive thermal properties compared to traditional polymers.