Journal
MENDELEEV COMMUNICATIONS
Volume 33, Issue 3, Pages 360-361Publisher
ELSEVIER
DOI: 10.1016/j.mencom.2023.04.020
Keywords
polyrotaxane; polyoxazolines; cyclodextrin; polyethyleneimine; complexes; inclusion compounds; acylation
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Functional polyrotaxanes of N-alkanoylpolyethyleneimine@ a-cyclodextrin type were synthesized by acylating the polypseudorotaxane precursor, a polyethylenimine@ a-cyclodextrin inclusion complex, with excess carboxylic acid anhydrides. During the reaction, a-cyclodextrin moieties were also completely O-acylated. The introduction of acyl groups into the polyethyleneimine backbone prevented the expulsion of a-cyclodextrin rings from this backbone.
Functional polyrotaxanes of N-alkanoylpolyethyleneimine@ a-cyclodextrin type are synthesized by acylation of the polypseudorotaxane precursor, namely, a polyethylenimine@ a-cyclodextrin inclusion complex, with excess of carboxylic acid anhydrides. In the course of the processing, a-cyclo-dextrin moieties are also fully O-acylated. The introduction of acyl moieties into polyethyleneimine backbone prevents the expulsion of a-cyclodextrin rings from this backbone.
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