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dc.contributor.authorZhang, Hefeng
dc.contributor.authorZhang, Zhen
dc.contributor.authorGnanou, Yves
dc.contributor.authorHadjichristidis, Nikos
dc.date.accessioned2015-08-03T12:35:38Z
dc.date.available2015-08-03T12:35:38Z
dc.date.issued2015-05-28
dc.identifier.issn00249297
dc.identifier.doi10.1021/acs.macromol.5b00713
dc.identifier.urihttp://hdl.handle.net/10754/564187
dc.description.abstractNovel well-defined polyethylene-based random, block, and bilayered molecular cobrushes were synthesized through the macromonomer strategy. Two steps were involved in this approach: (i) synthesis of norbornyl-terminated macromonomers of polyethylene (PE), polycaprolactone (PCL), poly(ethylene oxide) (PEO), and polystyrene (PS), as well as polyethylene-b-polycaprolactone (PE-b-PCL), by esterification of the hydroxyl-terminated precursors (PE, PCL, PEO, PS, and PE-b-PCL) with 5-norbornene-2-carboxylic acid and (ii) ring-opening metathesis (co)polymerization of the resulting macromonomers to afford the PE-based molecular cobrushes. The PE-macromonomers were synthesized by polyhomologation of dimethylsulfoxonium methylide, while the others by anionic polymerization. Proton nuclear magnetic resonance spectroscopy (1H NMR) and high-temperature gel permeation chromatography (HT-GPC) were used to imprint the molecular characteristics of all macromonomers and molecular brushes and differential scanning calorimetry (DSC) for the thermal properties. The bilayered molecular cobrushes of P(PE-b-PCL) adopt a wormlike morphology on silica wafer as visualized by atomic force microscopy (AFM). © 2015 American Chemical Society.
dc.publisherAmerican Chemical Society (ACS)
dc.titleWell-Defined Polyethylene-Based Random, Block, and Bilayered Molecular Cobrushes
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.personZhang, Hefeng
kaust.personGnanou, Yves
kaust.personHadjichristidis, Nikos
kaust.personZhang, Zhen
dc.date.published-online2015-05-28
dc.date.published-print2015-06-09


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