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One-Pot Synthesis of a Polyrotaxane via Selective Threading of a PEI-b-PEG-b-PEI Copolymer

✍ Scribed by Hak Soo Choi; Tooru Ooya; Nobuhiko Yui

Book ID
102470847
Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
218 KB
Volume
6
Category
Article
ISSN
1616-5187

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✦ Synopsis

Abstract

Summary: A functional polyrotaxane of a PEI‐b‐PEG‐b‐PEI copolymer is synthesized in aqueous solution in a one‐pot sequence. To obtain a polyrotaxane with PEG‐block‐selective inclusion complexes, the solution pH of the polypseudorotaxane is lowered to 4.4 in the presence of 9‐anthraldehyde (AN), which triggers the expulsion of the α‐cyclodextrins (α‐CDs) from the flank PEI chains.

Synthetic strategy of a block‐selective polyrotaxane between a PEI‐b‐PEG‐b‐PEI copolymer and α‐cyclodextrins.

magnified imageSynthetic strategy of a block‐selective polyrotaxane between a PEI‐b‐PEG‐b‐PEI copolymer and α‐cyclodextrins.

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