Synthesis and optical properties of chiral helical polycarbodiimides

Qingbin Xue; Tatsumi Kimura; Takashi Fukuda; Satoru Shimada; Hiro Matsuda

doi:10.1117/12.453300

12 December 2002 Synthesis and optical properties of chiral helix polycarbodiimide

Qingbin Xue, Tatsumi Kimura, Takashi Fukuda, Satoru Shimada, Hiro Matsuda

Author Affiliations +

Proceedings Volume 4799, Liquid Crystals VI; (2002) https://doi.org/10.1117/12.453300
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Chiral helical polymethylphenylethylcarbodiimides (Poly-PhEMCDI) and polymethylcyclohexylethylcarbodiimides (Poly-ChEMCDI) have been synthesized by insertion polymerization of corresponding monomeric carbodiimide using copper complex as initiator. Their circular dichroism, optical rotation power induced by ordered rigid main chain helical structure in solution and casting films were obtained and molecular weight dependent circular dichroism were studied. Primary results about Second Harmonic Generation (SHG) of casting films of polycarbodiimides prepared by different solvents were measured and chloroform was the best solvent to prepare casting films with preferential orientation of molecular helical structure. Polycarbodiimides can form lyotropic liquid crystal in chloroform, THF solution etc.

Citation Download Citation

Qingbin Xue, Tatsumi Kimura, Takashi Fukuda, Satoru Shimada, and Hiro Matsuda "Synthesis and optical properties of chiral helix polycarbodiimide", Proc. SPIE 4799, Liquid Crystals VI, (12 December 2002); https://doi.org/10.1117/12.453300

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