Polymorphy in the Stereostructure of Periodic Polymer Backbones

Tsutomu Nakanishi*, Hajime Okamoto, Maki Kasahara, Kyozaburo Takeda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We theoretically investigated the polymorphy of the stereostructures of a periodic polymer. Using the polymer's internal conformation parameters of bond lengths, bond angles, and internal rotation angles, we extended the mathematical treatment for designing polymer backbones. We considered those periodic polymers whose unit cell consists of one (m = 1), two (m = 2), or three (m = 3) kinds of atoms. Moreover, for these three types of polymers, we supposed two catenation types for the skeleton atoms; one is a "homorotatory" sequence and the other is a "heterorotatory" one. To specify the backbone's stereostructure, we introduced several conformation parameters such as the helical pitch number n, the translation distance d, and the inclination angle of the skeleton plane Θ. By combining these parameters, we can systematically understand the variety and the possible polymorphy in the stereostructure of a periodic polymer backbone.

Original languageEnglish
Pages (from-to)2829-2849
Number of pages21
JournalJournal of Polymer Science, Part B: Polymer Physics
Issue number22
Publication statusPublished - 2003 Nov 15


  • Polymer backbones
  • Polymorphy
  • Stereostructure

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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