Synthesis and Characterization of Organic/Inorganic Polyrotaxanes from Polyhedral Oligomeric Silsesquioxane and Poly(ethylene oxide)/α-Cyclodextrin Polypseudorotaxanes via Click Chemistry
✍ Scribed by Ke Zeng; Sixun Zheng
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 269 KB
- Volume
- 210
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
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.
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