End-Functionalized Palladium SCS Pincer Polymers via Controlled Radical Polymerizations

Diane S. Lye, Aaron E. Cohen, Madeleine Z. Wong, Marcus Weck

Research output: Contribution to journalArticle

Abstract

A direct and facile route toward semitelechelic polymers, end-functionalized with palladated sulfur-carbon-sulfur pincer (PdII-pincer) complexes is reported that avoids any post-polymerization step. Key to our methodology is the combination of reversible addition-fragmentation chain-transfer (RAFT) polymerization with functionalized chain-transfer agents. This strategy yields Pd end-group-functionalized materials with monomodal molar mass dispersities (D) of 1.18-1.44. The RAFT polymerization is investigated using a PdII-pincer chain-transfer agent for three classes of monomers: styrene, tert-butyl acrylate, and N-isopropylacrylamide. The ensuing PdII-pincer end-functionalized polymers are analyzed using 1H NMR spectroscopy, gel-permeation chromatography, and elemental analysis. The RAFT polymerization methodology provides a direct pathway for the fabrication of PdII-pincer functionalized polymers with complete end-group functionalization.

Original languageEnglish (US)
JournalMacromolecular Rapid Communications
DOIs
StateAccepted/In press - 2017

Fingerprint

Palladium
Free radical polymerization
Polymers
Polymerization
Sulfur
Styrene
Molar mass
Gel permeation chromatography
Nuclear magnetic resonance spectroscopy
Carbon
Monomers
Fabrication
Chemical analysis

Keywords

  • Atom-transfer radical polymerization (ATRP)
  • Metal coordination
  • Pincer complexes
  • Radical polymerizations
  • Reversible addition-fragmentation chain-transfer (RAFT) polymerization

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

End-Functionalized Palladium SCS Pincer Polymers via Controlled Radical Polymerizations. / Lye, Diane S.; Cohen, Aaron E.; Wong, Madeleine Z.; Weck, Marcus.

In: Macromolecular Rapid Communications, 2017.

Research output: Contribution to journalArticle

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N2 - A direct and facile route toward semitelechelic polymers, end-functionalized with palladated sulfur-carbon-sulfur pincer (PdII-pincer) complexes is reported that avoids any post-polymerization step. Key to our methodology is the combination of reversible addition-fragmentation chain-transfer (RAFT) polymerization with functionalized chain-transfer agents. This strategy yields Pd end-group-functionalized materials with monomodal molar mass dispersities (D) of 1.18-1.44. The RAFT polymerization is investigated using a PdII-pincer chain-transfer agent for three classes of monomers: styrene, tert-butyl acrylate, and N-isopropylacrylamide. The ensuing PdII-pincer end-functionalized polymers are analyzed using 1H NMR spectroscopy, gel-permeation chromatography, and elemental analysis. The RAFT polymerization methodology provides a direct pathway for the fabrication of PdII-pincer functionalized polymers with complete end-group functionalization.

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