A supramolecular polymer based on tweezer-type π?π stacking interactions: Molecular design for healability and enhanced toughness

Stefano Burattini, Barnaby W. Greenland, Wayne Hayes, Michael E. MacKay, Stuart J. Rowan, Howard M. Colquhoun

研究成果: Article査読

162 被引用数 (Scopus)

抄録

A new polyamide with tweezer-type dipyrenyl end-groups was successfully synthesized. The new material differs from a related but mechanically much weaker blend solely in the strength of specified supramolecular interactions between the components, rather than in the chain-structures of the polymers themselves. The synthesis of polyamine involved reaction of Jeffamine 400 with isophthaloyl dichloride in the presence of ca. 20 mol% of the aminomethyl-substituted tweezer-molecue to end-cap the chains and control the degree of polymerization. The MALDI-ToF mass spectrum of polyamide exhibited well resolved signals consistent with the production of bis end-capped chains containing up to three Jeffamine 400 segments. The new material differs from a related but mechanically much weaker blend solely in the strength of specified supramolecular interactions between the components, rather than in the chain-structures of the polymers themselves. The results show that blend has an enhanced ultimate tensile strength and greatly increased modulus of toughness and elongation.

本文言語English
ページ(範囲)6-8
ページ数3
ジャーナルChemistry of Materials
23
1
DOI
出版ステータスPublished - 2011 1 11
外部発表はい

ASJC Scopus subject areas

  • 材料化学
  • 化学工学(全般)
  • 化学 (全般)

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