One-pot synthesis of linear- and three-arm star-tetrablock quarterpolymers via sequential metal-free ring-opening polymerization using a "catalyst switch" strategy

Handle URI:
http://hdl.handle.net/10754/563693
Title:
One-pot synthesis of linear- and three-arm star-tetrablock quarterpolymers via sequential metal-free ring-opening polymerization using a "catalyst switch" strategy
Authors:
Zhao, Junpeng; Pahovnik, David; Gnanou, Yves ( 0000-0001-6253-7856 ) ; Hadjichristidis, Nikolaos ( 0000-0003-1442-1714 )
Abstract:
A "catalyst switch" strategy has been used to sequentially polymerize four different heterocyclic monomers. In the first step, epoxides (1,2-butylene oxide and ethylene oxide) were successively polymerized from a monohydroxy or trihydroxy initiator in the presence of a strong phosphazene base promoter (t-BuP4). Then, an excess of diphenyl phosphate (DPP) was introduced, followed by addition and polymerization of a cyclic carbonate (trimethylene carbonate) and a cyclic ester (δ-valerolactone or ε-caprolactone). DPP acted as both neutralizer of the phosphazenium alkoxide (polyether chain end) and activator of the cyclic carbonate/ester. Using this method, linear- and star-tetrablock quarterpolymers were prepared in one pot. This work is emphasizing the strength of the previously developed catalyst switch strategy for the facile metal-free synthesis of complex macromolecular architectures. © 2014 Wiley Periodicals, Inc.
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Polymer Synthesis Laboratory
Publisher:
Wiley-Blackwell
Journal:
Journal of Polymer Science Part A: Polymer Chemistry
Issue Date:
6-Aug-2014
DOI:
10.1002/pola.27332
Type:
Article
ISSN:
0887624X
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorZhao, Junpengen
dc.contributor.authorPahovnik, Daviden
dc.contributor.authorGnanou, Yvesen
dc.contributor.authorHadjichristidis, Nikolaosen
dc.date.accessioned2015-08-03T12:06:38Zen
dc.date.available2015-08-03T12:06:38Zen
dc.date.issued2014-08-06en
dc.identifier.issn0887624Xen
dc.identifier.doi10.1002/pola.27332en
dc.identifier.urihttp://hdl.handle.net/10754/563693en
dc.description.abstractA "catalyst switch" strategy has been used to sequentially polymerize four different heterocyclic monomers. In the first step, epoxides (1,2-butylene oxide and ethylene oxide) were successively polymerized from a monohydroxy or trihydroxy initiator in the presence of a strong phosphazene base promoter (t-BuP4). Then, an excess of diphenyl phosphate (DPP) was introduced, followed by addition and polymerization of a cyclic carbonate (trimethylene carbonate) and a cyclic ester (δ-valerolactone or ε-caprolactone). DPP acted as both neutralizer of the phosphazenium alkoxide (polyether chain end) and activator of the cyclic carbonate/ester. Using this method, linear- and star-tetrablock quarterpolymers were prepared in one pot. This work is emphasizing the strength of the previously developed catalyst switch strategy for the facile metal-free synthesis of complex macromolecular architectures. © 2014 Wiley Periodicals, Inc.en
dc.publisherWiley-Blackwellen
dc.subjectBlock copolymersen
dc.subjectHeterocyclic monomersen
dc.subjectOrganic catalystsen
dc.subjectRing-opening polymerizationen
dc.subjectSequential polymerizationen
dc.subjectStar polymersen
dc.titleOne-pot synthesis of linear- and three-arm star-tetrablock quarterpolymers via sequential metal-free ring-opening polymerization using a "catalyst switch" strategyen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentPolymer Synthesis Laboratoryen
dc.identifier.journalJournal of Polymer Science Part A: Polymer Chemistryen
kaust.authorZhao, Junpengen
kaust.authorPahovnik, Daviden
kaust.authorGnanou, Yvesen
kaust.authorHadjichristidis, Nikolaosen
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