PHOTO-CROSSLINKABLE POLYMERS FOR THE PHOTOSTIMULATED ALIGNMENT OF LIQUID CRYSTALLINE MATERIALS
Abstract
Тhe alignment of a liquid crystalline monomer by layers of photo-crosslinking polymers with a methacrylate backbone and photodimerized side groups is experimentally investigated. Polymers under investigation demonstrate the effect of a photostimulated alignment after rubbing with a cloth, like benzaldehyde polymers, but the required exposure dose of irradiation at 365 nm for them is smaller by two orders of magnitude due to the long-wavelength shift of the absorption spectra. The availability of high-power LEDs emitting at this wavelength opens the prospect of a multiple increase in the productivity of the process of alignment layers formation for liquid crystalline materials on the basis of polymers with the effect of a photostimulated alignment. It also becomes possible to effectively use lasers with a wavelength of 355 nm for aligning hologram recording.
About the Authors
U. V. Mahilny
Belarusian State University
Belarus
Belarus
4 Nezavisimosti Prosp., Minsk, 220030
A. I. Stankevich
Belarusian State University
Belarus
Belarus
4 Nezavisimosti Prosp., Minsk, 220030
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Review
For citations:
Mahilny U.V., Stankevich A.I. PHOTO-CROSSLINKABLE POLYMERS FOR THE PHOTOSTIMULATED ALIGNMENT OF LIQUID CRYSTALLINE MATERIALS. Zhurnal Prikladnoii Spektroskopii. 2019;86(6):868-873. (In Russ.)
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