Journal
POLYMER CHEMISTRY
Volume 12, Issue 44, Pages 6381-6385Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1py01197a
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The study presents a reversible cyclic-linear topological transformation of poly(epsilon-caprolactone) facilitated by a long-range rotaxane switch. The linear polymer is fixed by a protonated tert-amine/crown ether interaction at the center of the polymer chain and can be reversibly transformed into a cyclic polymer fixed by urethane linkage/crown ether interaction at the polymer end upon neutralization/acidification of the tert-amine moiety.
A reversible cyclic-linear topological transformation of a poly(epsilon-caprolactone) facilitated by a long-range rotaxane switch is reported. A linear polymer, whose topology is fixed by a protonated tert-amine/crown ether interaction at the center of the polymer chain, was reversibly transformed into a cyclic polymer fixed by urethane linkage/crown ether interaction at the polymer end upon neutralization/acidification of the tert-amine moiety.
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