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Novel supramolecular block copolymer: A polyrotaxane consisting of many threaded α- and γ-cyclodextrins with an ABA triblock architecture

Macromolecules, ISSN: 0024-9297, Vol: 42, Issue: 12, Page: 3856-3859
2009
  • 20
    Citations
  • 0
    Usage
  • 25
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    20
    • Citation Indexes
      20
  • Captures
    25

Article Description

The strategic synthesis of a novel supramolecular 'block copolymer', a polyrotaxane with a triblock architecture was demonstrated. The block polyrotaxane consisted a middle block of multiple γ-CD rings and two flanking blocks of multiple α-CD rings, where all CD rings were threaded on the poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymer with two 2,4,6-trinitrophenyl groups. GPC and H NMR spectroscopy were used to determine the molecular characteristics of the starting PEO-PPO-PEO triblock copolymer. It was observed that five long-chain and nanometer-sized wires, corresponding to the triblock polyrotaxane were distributed homogeneously on the graphite (HOPG) substrates. It was concluded that this strategy could be used for copolyrotaxane synthesis with other macrocycles and copolyrotaxane can be used as precursors for designing advanced materials with different functional properties.

Bibliographic Details

Chuan Yang; Jun Li; Jianshu Yang; Xiping Ni

American Chemical Society (ACS)

Chemistry; Materials Science

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