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dc.contributor.authorPatil, Naganatha
dc.contributor.authorGnanou, Yves
dc.contributor.authorFeng, Xiaoshuang
dc.date.accessioned2022-05-12T06:25:53Z
dc.date.available2022-05-12T06:25:53Z
dc.date.issued2022-05-11
dc.identifier.citationPatil, N., Gnanou, Y., & Feng, X. (2022). Orthogonally grown polycarbonate and polyvinyl block copolymers from mechanistically distinct (co)polymerizations. Polymer Chemistry. https://doi.org/10.1039/d2py00442a
dc.identifier.issn1759-9954
dc.identifier.issn1759-9962
dc.identifier.doi10.1039/d2py00442a
dc.identifier.urihttp://hdl.handle.net/10754/676856
dc.description.abstractMechanistically distinct polymerization systems can afford unique block copolymers that would not be accessible by mere sequential polymerization. Herein we report a convenient one-pot synthesis of miscellaneous di- and triblock copolymers comprising CO2-based and polyvinyl blocks, obtained orthogonally through triethylborane (TEB)-mediated ring opening copolymerization (ROCOP) of CO2 with epoxides on the one hand and reversible addition fragmentation chain transfer (RAFT) polymerization of vinyl monomers on the other. 4-Cyano-4-[(dodecylsulfanylthiocarbonyl) sulfanyl] pentanoic acid (TTC-COOH), which carries a trithiocarbonate function and a carboxylic acid group, played the dual role of a chain transfer agent for RAFT polymerization and an initiator for the ROCOP of CO2/epoxide. Different bases such as tetrabutylammonium hydroxide, N-heterocyclic carbene (NHC), and tributylamine (TBA) were used for the deprotonation of TTC-COOH; in each case the compatibility of the generated carboxylic salts with trithiocarbonate functions was checked when they were utilized to copolymerize CO2 and epoxides. It was found that the salts produced in situ by the deprotonation of TTC-COOH using NHC and TBA did not harm trithiocarbonate functions. The two distinct polymerizations occurred as expected, affording a series of well-defined CO2-based AB and ABC block copolymers comprising one or two poly(vinyl) blocks, depending upon the choice of different combinations of epoxides and vinyl monomers. The thermal characterization of these AB and ABC block copolymers revealed either two or three glass transition temperatures indicative of phase-separated materials.
dc.description.sponsorshipSupported by KAUST under baseline funding (BAS/1/1374-01-01)
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://xlink.rsc.org/?DOI=D2PY00442A
dc.rightsArchived with thanks to Polymer Chemistry under a Creative Commons license, details at: http://creativecommons.org/licenses/by-nc/3.0/
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/
dc.titleOrthogonally grown polycarbonate and polyvinyl block copolymers from mechanistically distinct (co)polymerizations
dc.typeArticle
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentChemical Science Program
dc.contributor.departmentOffice of the President
dc.identifier.journalPolymer Chemistry
dc.eprint.versionPublisher's Version/PDF
kaust.personPatil, Naganatha
kaust.personGnanou, Yves
kaust.personFeng, Xiaoshuang
kaust.grant.numberBAS/1/1374-01-01
refterms.dateFOA2022-05-12T06:26:33Z


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Archived with thanks to Polymer Chemistry under a Creative Commons license, details at: http://creativecommons.org/licenses/by-nc/3.0/
Except where otherwise noted, this item's license is described as Archived with thanks to Polymer Chemistry under a Creative Commons license, details at: http://creativecommons.org/licenses/by-nc/3.0/