Photoalignment dynamics of azo dyes series with different coordination metals

There are many photoaligned azo dyes that can be used for orientation of liquid crystals in various display devices. However, the structure of these compounds needs to be optimized to increase the rate of the process of molecule photoalignment, as well as to spread the application of these compounds...

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Bibliographic Details
Published in:Journal of the Society for Information Display 2014-01, Vol.22 (1), p.29-34
Main Authors: Mikulich, Vadim S., Muravsky, Alexander A., Murauski, Anatoli A., Kukhta, Iryna N., Agabekov, Vladimir E., Altamimi, Rashid
Format: Article
Language:English
Subjects:
azo dye
Dyes
intermolecular bonds
liquid crystals
Metals
orientation dynamics
photoalignment
Potassium
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Summary:There are many photoaligned azo dyes that can be used for orientation of liquid crystals in various display devices. However, the structure of these compounds needs to be optimized to increase the rate of the process of molecule photoalignment, as well as to spread the application of these compounds. The main coordination metal that presents in the molecules of azo dyes is sodium derivatives. The use of other alkali metals remains an open question. We used quantum‐chemical computation methods and reversible intermolecular bonding model to determine the effect of metal coordination on the velocity of photoalignment. The theoretical predictions were experimentally verified using sodium, potassium, lithium, and cesium salts of the model azo dye synthesized by us. We conclude that potassium azo derivatives are the fastest, ceteris paribus.
ISSN:1071-0922
1938-3657
DOI:10.1002/jsid.217