Elsevier

Polymer

Volume 125, 8 September 2017, Pages 134-137
Polymer

Short communication
Acid- or photo-cleavable polyrotaxane: Subdivision of supramolecular main-chain type polyrotaxane structure induced by acidolysis or photolysis

https://doi.org/10.1016/j.polymer.2017.08.002Get rights and content

Highlights

  • A PEG/CD polyrotaxane (PR) was successfully prepared using Ddz end-cap moieties.

  • The obtained PR can be subdivided into PEG and CD by acidolysis with TFA or photolysis by mercury lamp.

  • Complete conversion of the PR into PEG and CD was achieved by 3 h of light irradiation.

Abstract

A polyrotaxane with end moieties cleavable by acidic fission or photolytic cleavage was synthesized by end capping with (α,α-dimethyl-3,5-dimethoxybenzyloxy) carbonyl groups. The obtained polyrotaxane was subdivided into its molecular ring and axis components after treatment with neat trifluoroacetic acid at room temperature or irradiation with a high-pressure mercury lamp.

Section snippets

Acknowledgements

Part of the present study was financially supported by the Takahashi Industrial and Economic Research Foundation. Professor Yoshihiro Itoh (Shinshu University) is acknowledged for his helpful lecture for the uses of a mercury lamp.

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