PlumX Metrics
Embed PlumX Metrics

Synthesis of polyisocyanides bearing oligothiophene pendants: Higher-order structural control through pendant framework design

Polymer Journal, ISSN: 1349-0540, Vol: 47, Issue: 9, Page: 625-630
2015
  • 9
    Citations
  • 0
    Usage
  • 11
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    9
    • Citation Indexes
      9
  • Captures
    11

Article Description

L-Alanine-based polyisocyanides bearing oligothiophene (OT) pendants (poly-3a and poly-3b) were synthesized and the influence of the OT pendants on the chiroptical properties and helix-forming abilities of the polymers was investigated. Poly-3a bearing a quinquethiophene unit with two n-hexyl chains successfully formed a preferred-handed helical conformation by simultaneous interactions of the OT-pendant π-π stacking and hydrogen bonding of the amide groups. In contrast, poly-3b, which possesses a branched alkyl chain on behalf of the terminal n-hexyl chain of poly-3a, did not form a higher-ordered helical conformation. The results suggest that the structure of the alkyl chains positioned far from the polymer backbones remotely and sensitively affected the ability of the polymer to form a helical conformation. We also found that the structure of the OT pendants significantly affect the molecular weight as observed by AFM measurements. The polyisocyanide poly-3c bearing a bithiophene unit was additionally synthesized to examine the influence of the number of thiophene rings within the OT pendants on the higher-order structure formation.

Bibliographic Details

Tomoyuki Ikai; Yugaku Takagi; Katsuhiro Maeda; Shigeyoshi Kanoh; Ken Ichi Shinohara

Springer Science and Business Media LLC

Materials Science

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know