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Double Twist in Helical Polymer "Soft" Crystals
Physical Review Letters
  • Christopher Y. Li
  • Stephen Z. D. Cheng
  • Jason J. Ge
  • Feng Bai
  • John Z. Zhang
  • Ian K. Mann
  • Frank W. Harris
  • Liang-Chy Chien, Kent State University - Kent Campus
  • Donghang Yan
  • Tianbai He
  • Bernard Lotz
Publication Date
Document Type
In natural and synthetic materials having non-racemic chiral centers, chirality and structural ordering each play a distinct role in the formation of ordered states. Configurational chirality can be extended to morphological chirality when the phase, structures possess low liquid crystalline order. In the crystalline states the crystallization process suppresses the chiral helical morphology due to strong ordering interactions, In this Letter, we report the first observation of helical single lamellar crystals of synthetic non-racemic chiral polymers. Experimental evidence shows that the molecular chains twist along both the long and short axes of the helical lamellar crystals, which is the first time a double-twist molecular orientation in a helical crystal has been observed.
Copyright 1999 American Physical Society. Available on publisher's site at
Citation Information
Christopher Y. Li, Stephen Z. D. Cheng, Jason J. Ge, Feng Bai, et al.. "Double Twist in Helical Polymer "Soft" Crystals" Physical Review Letters Vol. 83 Iss. 22 (1999) p. 4558 - 4561
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