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 (Đ) 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. (Figure presented.).

Original languageEnglish (US)
Article number1700174
JournalMacromolecular Rapid Communications
Volume38
Issue number14
DOIs
StatePublished - Jul 2017

Keywords

  • atom-transfer radical polymerization (ATRP)
  • metal coordination
  • pincer complexes
  • radical polymerizations
  • reversible addition-fragmentation chain-transfer (RAFT) polymerization

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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