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Molecular Crystals and Liquid Crystals Volume 479, 2007 - Issue 1
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Synthesis and New Materials

Polymethacryloylaminoarylmethacrylates: New Concept of Photoalignment Materials for Liquid Crystals

L. Vretik Macromolecular Chemistry Department, Kyiv National Taras Shevchenko University, Kyiv, UkraineCorrespondence[email protected]
,
V. Syromyatnikov Macromolecular Chemistry Department, Kyiv National Taras Shevchenko University, Kyiv, Ukraine
,
V. Zagniy Macromolecular Chemistry Department, Kyiv National Taras Shevchenko University, Kyiv, Ukraine
,
L. Paskal Macromolecular Chemistry Department, Kyiv National Taras Shevchenko University, Kyiv, Ukraine
,
O. Yaroshchuk Institute of Physics, NASU, Kyiv, Ukraine
,
L. Dolgov Institute of Physics, NASU, Kyiv, Ukraine
,
V. Kyrychenko Institute of Physics, NASU, Kyiv, Ukraine
&
C.-D. Lee Industrial Technology Research Institute, Chutung, Hsinchu, Taiwan, R.O.C.
 show all
Pages 121/[1159]-134/[1172] | Published online: 22 Sep 2010
 
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Abstract

New class of highly efficient polymers for liquid crystal (LC) photoalignment is proposed. These polymers are based on methacryloylaminoarylmethacrylates having two methacryloyl groups of different reactivity. The more active O-methacryloyl group is subjected to polymerization, while the less active NH-methacryloyl group undergoes photocrosslinking reaction in combination with Fries rearrangement. The latter process is anisotropic in case of polarized light irradiation that results in LC photoalignment with readily controlled pretilt angle and anchoring energy. The induced alignment shows high thermal and photo-stability.

Acknowledgments

These studies were in part supported by NAS of Ukraine (grant VC897).

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