Tetracrystalline Tetrablock Quarterpolymers: Four Different Crystallites under the Same Roof.

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Multicrystalline block copolymers having three or more crystalline segments are essential materials for the advancement of physics in the field of crystallinity. Due to the challenging synthesis of multicrystalline polymers only a limited number of tricrystalline terpolymers are reported until now. We report, for the first time, the synthesis of poly(ethylene)-b-poly(ethylene oxide)-b-poly(ε-caprolactone)-b-poly(L-Lactide) (PE-b-PEO-b-PCL-b-PLLA) tetracrystalline tetrablock quarterpolymer, by combining polyhomologation, ring-opening polymerization, and an organic/metal “catalyst switch” strategy.1H NMR spectroscopy and gel-permeation chromatography confirm the formation of the tetrablock quarterpolymer, while differential scanning calorimetry, X-ray diffraction, and wide-line separation solid-state NMR spectroscopy reveal the existence of four different crystalline domains.
Original languageEnglish (US)
Pages (from-to)16267-16274
Number of pages8
JournalAngewandte Chemie (International ed. in English)
Issue number45
StatePublished - Aug 26 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).The authors thank Professor Alejandro J. Müller (University of the Basque Country) for the fruitful discussion on the crystallizationof multicrystalline multiblock copolymers


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