Synthesis and Characterization of Organic/Inorganic Polyrotaxanes from Polyhedral Oligomeric Silsesquioxane and Poly(ethylene oxide)/α‐Cyclodextrin Polypseudorotaxanes via Click Chemistry

Organic/inorganic polyrotaxanes were synthesized via Huisgen 1,3‐dipolar cycloaddition between 3‐azidapropylhepta(3,3,3‐tri fluoro propyl) POSS and dialkyne‐terminated PEO/ α ‐cyclodextrin polypseudorotaxanes. The organic/inorganic hybrid polyrotaxanes were characterized by means of 1 H NMR spectroscopy and WAXRD. It was found that the nanosized POSS blocking agents significantly affected the crystal structures of polyrotaxanes. Thermal gravimetric analysis showed that the organic/inorganic hybrid polyrotaxanes exhibited enhanced thermal stability compared to their parent polypseudorotaxanes, in terms of rate of thermal degradation and the summation of char and ceramic yields. magnified image