Aggregation of Anthraquinone Dye Molecules in a Nematic Liquid Crystal
We report an experimental evidence that molecules of anthraquinone dye aggregate in an anisotropic solvent, a nematic liquid crystal (NLC). We observe strong nonlinear dependencies of the dielectric permittivity and anisotropy of light absorption on the dye concentration c. Moreover, the data sugges...
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Published in | Molecular Crystals and Liquid Crystals Vol. 589; no. 1; pp. 96 - 104 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Philadelphia
Taylor & Francis Group
22.01.2014
Taylor & Francis Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | We report an experimental evidence that molecules of anthraquinone dye aggregate in an anisotropic solvent, a nematic liquid crystal (NLC). We observe strong nonlinear dependencies of the dielectric permittivity and anisotropy of light absorption on the dye concentration c. Moreover, the data suggest that the aggregates are linear, but, in contrast to the isotropic case, their formation in a NLC undergoes two different concentration regimes with a well pronounced crossover. These effects are explained by the interplay between the aggregates' lengths and their orientational ordering due to the interaction with the nematic director. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1542-1406 1563-5287 1527-1943 |
DOI: | 10.1080/15421406.2014.881217 |