Synthesis and Characterization of a Dumbbell-Shaped Polyrotaxane Based on Polytetrahydrofuran bis(3-aminopropyl) Terminated and α-Cyclodextrins Using Polyamidoamine (PAMAM) Dentrimers as Bulky Stoppers

Abstract:

A dumbbell-shaped polyrotaxane based on polytetrahydrofuran bis (3-aminopropyl) terminated and α-cyclodextrins using polyamidoamine (PAMAM) dentrimers as bulky stoppers was successfully prepared. The ¹H NMR results show that the peaks of α-CDs in these polyrotaxanes are broadened compared with pure α-CDs. Wide-angle X-ray diffraction (XRD) measurements of the resulting polyrotaxanes suggest to produce a channel-type crystalline structure of inclusion complex. Thermogravimetric analysis (TGA) of the resultant polyrotaxanes show that α-CDs are significantly stabilized by the formation of the inclusion complexes.

• Periodical: Advanced Materials Research (Volume 1094)
• Pages: 41-48
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1094.41
• Online since: March 2015
• Authors: Ri Min Cong, Huai Qing Yu*, Yan Gong Yang, Si Yi Yang, Jiao Li, Wei Meng Si
• Keywords: Cyclodextrins, Dendrimers, Polyrotaxanes, Polytetrahydrofuran

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