Induced cholesteric systems based on some cyano derivatives as host phases

Natalya I. Shkolnikova; Lidiya A. Kutulya; V. V. Vashchenko; A. P. Fedoryako; V. I. Lapanik; N. R. Posledovich

doi:10.1117/12.486654

11 December 2002 Induced cholesteric systems based on some cyano derivatives as host phases

Natalya I. Shkolnikova, Lidiya A. Kutulya, V. V. Vashchenko, A. P. Fedoryako, V. I. Lapanik, N. R. Posledovich

Proceedings Volume 4938, Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals; (2002) https://doi.org/10.1117/12.486654
Event: XV International School on Spectroscopy of Molecules and Crystals, 2001, Chernivsti, Ukraine

Abstract

Macroscopical properties of some induced cholesteric compositions based on 4-pentyl-4'-cyano derivatives of biphenyl and phenylcyclohexane as host phases have been investigated. The series of N-arylidene derivatives of (S)-1-phenylethylamine with varied both rigid moiety of the N-arylidene fragment and terminal substituent was used as chiral dopants. The influence of the chiral dopant molecular structure as well as of physical properties of the host phases used on the helical twisting power, the temperature dependence of the induced helical pitch and the N* mesophase thermal stability has been characterized. It has been concluded that the distinctions in properties of the LC systems containing the OCH₂ and COO linking groups are caused by their different conformational states.

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Natalya I. Shkolnikova, Lidiya A. Kutulya, V. V. Vashchenko, A. P. Fedoryako, V. I. Lapanik, and N. R. Posledovich "Induced cholesteric systems based on some cyano derivatives as host phases", Proc. SPIE 4938, Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals, (11 December 2002); https://doi.org/10.1117/12.486654

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