Living ROMP of exo-norbornene esters possessing Pd11 SCS pincer complexes or diaminopyridines

Joel M. Pollino, Ludger P. Stubbs, Marcus Weck

Research output: Contribution to journalArticlepeer-review


Isomerically pure exo-norbornene esters containing either a Pd11 SCS pincer complex or a diaminopyridine unit were synthesized, polymerized, and copolymerized by ring-opening metathesis polymerization using a ruthenium initiator. All polymerizations are living under mild reaction conditions. A comparison between the pure exo monomers and the commonly employed 80:20 endo / exo mixtures was carried out. The exo-norbornene isomers exhibit significantly higher rates of propagation under milder conditions when compared to the endo / exo mixtures. Kinetic studies have shown that the kp values are highly dependent upon the isomeric purity but completely independent of the terminal diaminopyridine or Pd11 SCS Pincer functional groups. The living character of the polymerization has allowed for the first block copolymerization of norbornene metal-containing pincer complexes and diaminopyridine-based hydrogen-bonding receptors.

Original languageEnglish (US)
Pages (from-to)2230-2234
Number of pages5
Issue number7
StatePublished - Apr 8 2003

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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