Absorbance Spectra of Co2+ Alkanoate Liquid Crystals and Smectic Glasses

Authors

  • Aleksandra Gridyakina National Aviation University, Kyiv, Ukraine
  • Arkadiy Polishchuk National Aviation University, Kyiv, Ukraine
  • Tetiana Len National Aviation University, Kyiv, Ukraine

DOI:

https://doi.org/10.18372/1990-5548.79.18443

Keywords:

ionic thermotropoic liquid crystals, smectic glasses, cobalt alkanoates, ; optical absorption spectra

Abstract

The work is devoted to the study of the optical properties of ionic thermotropic liquid crystals of the homologous series of cobalt alkanoates and their smectic glasses using methods of electronic spectroscopy. The aim of the study was to determine the dominant coordination of cobalt cations in the alkanoate matrix and the nature of the matrix's influence on the absorption of samples. It is shown that the dominant coordination of cobalt ions in the studied media is the octahedron. A significant decrease in the absorption coefficient with the increase in the length of the aliphatic chain in the homologous series of cobalt alkanoates is due to a decrease in both the volume concentration of the cobalt cation complexes and the values of the dipole moments of the d-d transitions.

Author Biographies

Aleksandra Gridyakina , National Aviation University, Kyiv, Ukraine

Candidate of Science (Physics and Mathematics)

Associate Professor

Department of General and Applied Physics, Aerospace Faculty

Arkadiy Polishchuk , National Aviation University, Kyiv, Ukraine

Doctor of Science (Physics and Mathematics)

Professor

Chief of Department General and Applied Physics

Aerospace Faculty

Tetiana Len , National Aviation University, Kyiv, Ukraine

Candidate of Science (Physics and Mathematics)

Associate Professor

Department of General and Applied Physics

Aerospace Faculty

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Published

2024-03-29

Issue

Vol. 1 No. 79 (2024)

Section

ELECTRONICS

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