Suspending Polyrotaxane Dissociation via Photo-Reversible Capping of Terminals.
dithiobenzoate
photo-reversible capping
polyrotaxanes
supramolecular dissociation
Journal
Macromolecular rapid communications
ISSN: 1521-3927
Titre abrégé: Macromol Rapid Commun
Pays: Germany
ID NLM: 9888239
Informations de publication
Date de publication:
Oct 2019
Oct 2019
Historique:
received:
09
07
2019
revised:
07
08
2019
pubmed:
21
8
2019
medline:
23
2
2020
entrez:
21
8
2019
Statut:
ppublish
Résumé
Reversible covalent bonds yield polymeric materials with functional characteristics such as self-healing, shape memory, stress relaxation, and stimuli-responsiveness. Here, photo-reversibly cappable polyrotaxanes are designed and the on-off controlled dissociation of their supramolecular architectures is demonstrated. The polyrotaxanes are synthesized by capping dithiobenzoates at both terminals of polyethylene glycol threaded through multiple α-cyclodextrins. Since dethreading of the α-cyclodextrins is prevented by the dithiobenzoate stoppers, the supramolecular dissociation is induced by their photo-cleavage. Subsequently, the cleaved dithiobenzoates spontaneously re-cap the polyrotaxane terminals in darkness. Thus, the supramolecular dissociation can be modulated by photo-reversible capping of the dithiobenzoate stoppers. These polyrotaxanes with dithiobenzoate stoppers are promising functional materials for photo-controlling physical properties and structures.
Identifiants
pubmed: 31429992
doi: 10.1002/marc.201900323
doi:
Substances chimiques
Benzoates
0
Cyclodextrins
0
Rotaxanes
0
alpha-Cyclodextrins
0
polyrotaxane
0
Poloxamer
106392-12-5
Polyethylene Glycols
3WJQ0SDW1A
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e1900323Subventions
Organisme : JSPS
ID : 19K20694
Organisme : JSPS
ID : 16H01852
Informations de copyright
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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