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

Автор(и)

  • A. P. Fedoryako Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine Автор
  • N. I. Lebovka Institute for Biocolloidal Chemistry, NAS of Ukraine Автор
  • L. N. Lisetski Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine Автор
  • O. V. Melezhyk Research Laboratory, TMSpetsmash Ltd. Автор
  • P. P. Shtifanyuk Institute for Scintillation Materials, STC "Institute for Single Crystals", NAS of Ukraine Автор

Ключові слова:

nanotubes, nematic liquid crystals, non-mesogenic dopants, electric conductivity, intermolecular interactions, anisotropic organic media, bioequivalent systems

Анотація

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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Біографії авторів

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

    60 Lenin Ave., Kharkov 61001, Ukraine

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

    42 Vernadsky Ave., 03142 Kyiv, Ukraine

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

    60 Lenin Ave., Kharkov 61001, Ukraine

  • автор O. V. Melezhyk, афіліація Research Laboratory, TMSpetsmash Ltd.

    Kyiv, Ukraine

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

    60 Lenin Ave., Kharkov 61001, Ukraine

Завантаження

Опубліковано

2018-12-06

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Методи біофізичних досліджень

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