Show simple item record

dc.contributor.authorZhao, Junpeng
dc.contributor.authorPahovnik, David
dc.contributor.authorGnanou, Yves
dc.contributor.authorHadjichristidis, Nikos
dc.date.accessioned2015-08-03T11:55:33Z
dc.date.available2015-08-03T11:55:33Z
dc.date.issued2014-06-03
dc.identifier.citationZhao, J., Pahovnik, D., Gnanou, Y., & Hadjichristidis, N. (2014). A “Catalyst Switch” Strategy for the Sequential Metal-Free Polymerization of Epoxides and Cyclic Esters/Carbonate. Macromolecules, 47(12), 3814–3822. doi:10.1021/ma500830v
dc.identifier.issn00249297
dc.identifier.doi10.1021/ma500830v
dc.identifier.urihttp://hdl.handle.net/10754/563607
dc.description.abstractA "catalyst switch" strategy was used to synthesize well-defined polyether-polyester/polycarbonate block copolymers. Epoxides (ethylene oxide and/or 1,2-butylene oxide) were first polymerized from a monoalcohol in the presence of a strong phosphazene base promoter (t-BuP4). Then an excess of diphenyl phosphate (DPP) was introduced, followed by the addition and polymerization of a cyclic ester (ε-caprolactone or δ-valerolactone) or a cyclic carbonate (trimethylene carbonate), where DPP acted as both the neutralizer of phosphazenium alkoxide (polyether chain end) and the activator of cyclic ester/carbonate. This work has provided a one-pot sequential polymerization method for the metal-free synthesis of block copolymers from monomers which are suited for different types of organic catalysts. © 2014 American Chemical Society.
dc.publisherAmerican Chemical Society (ACS)
dc.titleA "catalyst switch" Strategy for the sequential metal-free polymerization of epoxides and cyclic Esters/Carbonate
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentPolymer Synthesis Laboratory
dc.identifier.journalMacromolecules
kaust.personZhao, Junpeng
kaust.personPahovnik, David
kaust.personGnanou, Yves
kaust.personHadjichristidis, Nikos
dc.date.published-online2014-06-03
dc.date.published-print2014-06-24


This item appears in the following Collection(s)

Show simple item record