Anisotropic organic media as model bioequivalent systems. I. Liquid crystals containing dispersed multiwall nanotubes under aspects of anisotropic intermolecular interactions

  • A. P. Fedoryako Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine
  • N. I. Lebovka Institute for Biocolloidal Chemistry, NAS of Ukraine
  • L. N. Lisetski Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine
  • O. V. Melezhyk Research Laboratory, TMSpetsmash Ltd.
  • P. P. Shtifanyuk Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine
Keywords: nanotubes, nematic liquid crystals, non-mesogenic dopants, electric conductivity, intermolecular interactions, anisotropic organic media, bioequivalent systems

Abstract

Dispersions of carbon nanotubes (NT) in liquid crystals have been considered as a model system for studies of anisotropic intermolecular interactions in condensed organic media. Electric conductivity data were obtained for nematic liquid crystals (LC) with small (0.01-0.15 wt %) concentrations of multiwall NT dispersed therein. The electric conductivity increased noticeably with NT concentration in the LC matrix, suggesting a percolation-like behaviour at NT content in the LC matrix below ~0.01 wt %. A marked difference in the measured electric conductivity values for the LC matrices of different polarity (e.g., cyanobiphenyl and azoxy) was observed. Assuming that supramolecular arrangement of NT dispersed in the LC matrix can be treated in a manner similar to the conventional non-mesogenic dopants, the observed behaviour is explained using our recent theoretical description of intermolecular interactions in anisotropic organic media formed by particles of essentially different size and anisometry.

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Author Biographies

A. P. Fedoryako, Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine

60 Lenin Ave., Kharkov 61001, Ukraine

N. I. Lebovka, Institute for Biocolloidal Chemistry, NAS of Ukraine

42 Vernadsky Ave., 03142 Kyiv, Ukraine

L. N. Lisetski, Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine

60 Lenin Ave., Kharkov 61001, Ukraine

O. V. Melezhyk, Research Laboratory, TMSpetsmash Ltd.

Kyiv, Ukraine

P. P. Shtifanyuk, Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine

60 Lenin Ave., Kharkov 61001, Ukraine

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Published
2018-12-06
Cited
How to Cite
Fedoryako, A. P., Lebovka, N. I., Lisetski, L. N., Melezhyk, O. V., & Shtifanyuk, P. P. (2018). Anisotropic organic media as model bioequivalent systems. I. Liquid crystals containing dispersed multiwall nanotubes under aspects of anisotropic intermolecular interactions. Biophysical Bulletin, 1(18), 108-111. Retrieved from https://periodicals.karazin.ua/biophysvisnyk/article/view/12631
Section
Methods of biophysical investigations