Supramolecular alternating block copolymers via metal coordination

Si Kyung Yang, Ashootosh V. Ambade, Marcus Weck

Research output: Contribution to journalArticle

Abstract

A bimetallic ruthenium olefin metathesis initiator was synthesized and used to polymerize functionalized norbornenes, affording polymers that are living at both polymer chainends. Using this bis-ruthenium initiator strategy and combining it with functional chain-terminators, highly-efficient syntheses of either SCS-Pd pincer- or pyridine-functionalized symmetrical telechelic polymers were de-veloped. The terminal functional group incorporation was confirmed by 1H NMR spectroscopy analyses. The telechelic polymers were self-assembled into block copolymers by means of metal coordination between corresponding terminal recognition units. The self-assembly process was monitored by 1H NMR spectroscopy revealing nearly quantitative functionalization. The resulting supramolecular block copolymers were further characterized by viscometry and dynamic light scattering.

Original languageEnglish (US)
Pages (from-to)6605-6611
Number of pages7
JournalChemistry - A European Journal
Volume15
Issue number27
DOIs
StatePublished - Jul 6 2009

Keywords

  • Block copolymers
  • Metal coordination
  • Polymerization
  • Ring-opening metathesis
  • Ruthenium
  • Supramolecular chemistry

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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