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Chain‐Growth Polymerization of Aryl Grignards Initiated by a Stabilized NHC‐Pd Precatalyst
dc.contributor.authorBryan, Zachary J.en_US
dc.contributor.authorSmith, Mitchell L.en_US
dc.contributor.authorMcNeil, Anne J.en_US
dc.date.accessioned2012-07-12T17:23:13Z
dc.date.available2013-07-01T14:33:05Zen_US
dc.date.issued2012-05-14en_US
dc.identifier.citationBryan, Zachary J.; Smith, Mitchell L.; McNeil, Anne J. (2012). "Chain‐Growth Polymerization of Aryl Grignards Initiated by a Stabilized NHC‐Pd Precatalyst." Macromolecular Rapid Communications 33(9): 842-847. <http://hdl.handle.net/2027.42/92031>en_US
dc.identifier.issn1022-1336en_US
dc.identifier.issn1521-3927en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/92031
dc.description.abstractAn N‐heterocyclic carbene‐ligated palladium catalyst was discovered to mediate living, chain‐growth polymerizations of both phenylene‐ and thiophene‐based monomers. Polymerization of a fluorene‐based monomer, on the other hand, did not proceed through a living, chain‐growth pathway. Excitingly, block copolymerizations of phenylene and thiophene proceeded via a chain‐growth pathway, regardless of the order of monomer addition. Although some chain termination was observed during these copolymerizations, this pathway could be minimized when the second monomer was added shortly after consumption of the first monomer. These results suggest that the catalyst resting‐state at the end of polymerization is unstable. As a result, modifications to the NHC‐scaffold or the 3‐chloropyridine ligand will be necessary to generate an improved catalyst. A Pd catalyst that can mediate a living, chain‐growth polymerization of π‐conjugated monomers is reported. Using (IPr)Pd(3‐chloropyridine)Cl 2 as a precatalyst, both homopolymers and block copolymers of phenylene‐ and thiophene‐based monomers were prepared. Although a living, chain‐growth mechanism is observed during polymerization, the catalyst resting state is somewhat unstable after the monomer is consumed.en_US
dc.publisherWILEY‐VCH Verlagen_US
dc.subject.otherPalladium Catalystsen_US
dc.subject.otherConjugated Polymersen_US
dc.subject.otherChain‐Growth Polymerizationen_US
dc.subject.otherBlock Copolymersen_US
dc.titleChain‐Growth Polymerization of Aryl Grignards Initiated by a Stabilized NHC‐Pd Precatalysten_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelMaterials Science and Engineeringen_US
dc.subject.hlbsecondlevelBiological Chemistryen_US
dc.subject.hlbsecondlevelChemical Engineeringen_US
dc.subject.hlbsecondlevelChemistryen_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.subject.hlbtoplevelScienceen_US
dc.subject.hlbtoplevelEngineeringen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Chemistry and Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109‐1055, USAen_US
dc.contributor.affiliationumDepartment of Chemistry and Macromolecular Science and Engineering Program, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109‐1055, USA.en_US
dc.identifier.pmid22488735en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/92031/1/marc_201200096_sm_suppl.pdf
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/92031/2/842_ftp.pdf
dc.identifier.doi10.1002/marc.201200096en_US
dc.identifier.sourceMacromolecular Rapid Communicationsen_US
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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