Structural phototransformation of molecules in a bioequivalent liquid crystal medium
Keywords:
liquid crystals, selective reflection spectrum, helical pitch, UV irradiation, phototransformation
Abstract
Changes of selective reflection (SR) spectra of cholesteric liquid crystalline (LC) systems upon
introduction of optically active (OA) and photoactive dopants of different chemical classes are studied.
The possibility of obtaining LC media with required characteristics by varying the LC mixtures
compositions is shown. Changes of helical pitch of cholesteric LC systems with photo-active dopant upon
UV irradiation are analysed. It is shown that using of appropriate filters allows performing and
monitoring of selective phototransformation of the molecules. The method used can be applied to studies
of behavior of various biological molecules in LC media.
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References
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3. O.Vashchenko, V.Pashynska, M.Kosevich, V.Panikarskaya, L.Lisetski. Lyotropic mesophase of hydrated phospholipids as model medium for studies of antimicrobial agents activity // Mol. Cryst. Liq. Cryst. - 2011. - V.507, №1. - P. 155-163.
4. О.В. Ващенко, В. А. Пашинская, М.В. Косевич, В.Д. Паникарская, Л.Н. Лисецкий. Модуляция воздействия четвертичных аммониевых соединений на модельные биомембраны посредством комплексообразования с органическим анионом // Biopolymers and Cell. - 2010. - V.26, №6. - P. 472-477.
5. Корзовская О.В., Лисецкий Л.Н., Паникарская В.Д., Антонян Т.П. Исследование межмолекулярных взаимодействий компонентов биомембран с помощью спектров селективного пропускания в холестерической мезофазе // Журн. физ. химии. – 1998. – Т. 72, № 10. – С. 1896-1898.
6. Korzovska O.V., Terenetskaya I.P., Lisetski L.N. On a possibility to monitor the vitamin D formation processes using selective reflection properties of cholesteric liquid crystals // Вісн. Харк. ун-ту. – 2000. – № 488. Biophysical bulletin. Вип. 1. – C. 71-74.
7. L.N.Lisetski, V.D.Panikarskaya, N.A.Kasian, Grishchenko L.V., Terenetskaya I.P. Bioequivalent UV detectors based on cholesteric liquid crystals: effects of spectral composition and quantitative account for intensity of UV radiation //Proc. SPIE. - 2005. - V.6023OF, № 15. - P. 1-4.
8. Пристер Б.С., Борзенко В.Н., Лисецкий Л.Н., Паникарская В.Д., Батраченко Л.А., Радчук В.В. О возможном механизме радиационной чувствительности жидких кристаллов как модельных биоэквивалентных объектов // Доклады АН Украины. 1993. - № 3. - С. 135-138.
9. Prister B.S., Borzenko V.N., Lisetski L.N., Panikarskaya V.D., Batrachenko L.A., Radchuk V.V. Calorimetric and spectroscopic evidence of radiation-induced effects in liquid crystals under small dose rates // Mol. Mat. - 1995. - V. 5. - P. 175-179.
10. Sackmann E. Photochemically induced reversible color changes in cholesteric liquid crystals // J. Am. Chem. Soc. 1971. - V. 93. - P. 7088-7090.
11. G. Chilaya, A. Chanishvili, G. Petriashvili, R. Barberi, M.P. de Santo, M.A. Matranga. Different approaches of employing cholesteric liquid crystals in dye lasers // Mat. Sci. and Appl. - 2011. - V.2. - P. 116-129.
12. D. Aronzon, E.P. Levy, P.J. Collings, A. Chanishvili, G. Chilaya, G. Petriashvili. Trans-cis isomerisation of an azoxybenzene liquid crystal // Liquid Cystals. - 2007. - V.34, №.6. - P. 707-718.
13. Kang B., Choi H., Jeong M.-Y., Wu J.W. Effective medium analysis for optical control of laser tuning in a mixture of azo-nematics and cholesteric liquid crystal // J. Opt. Soc. Am. B. - 2010. – V.27, № 2. - P. 204-207.
Cited
How to Cite
Serbina, M. I., & Lisetskiy, L. N. (1). Structural phototransformation of molecules in a bioequivalent liquid crystal medium. Biophysical Bulletin, 2(27). Retrieved from https://periodicals.karazin.ua/biophysvisnyk/article/view/2529
Section
Cell biophysics
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