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Haque HA, Kakehi S, Hara M, et al. High-density liquid-crystalline azobenzene polymer brush attained by surface-initiated ring-opening metathesis polymerization. Langmuir. 2013;29(25):7571-5doi: 10.1021/la4002847.
Haque, H. A., Kakehi, S., Hara, M., Nagano, S., & Seki, T. (2013). High-density liquid-crystalline azobenzene polymer brush attained by surface-initiated ring-opening metathesis polymerization. Langmuir : the ACS journal of surfaces and colloids, 29(25), 7571-5. https://doi.org/10.1021/la4002847
Haque, Hafiz Ashraful, et al. "High-density liquid-crystalline azobenzene polymer brush attained by surface-initiated ring-opening metathesis polymerization." Langmuir : the ACS journal of surfaces and colloids vol. 29,25 (2013): 7571-5. doi: https://doi.org/10.1021/la4002847
Haque HA, Kakehi S, Hara M, Nagano S, Seki T. High-density liquid-crystalline azobenzene polymer brush attained by surface-initiated ring-opening metathesis polymerization. Langmuir. 2013 Jun 25;29(25):7571-5. doi: 10.1021/la4002847. Epub 2013 Jun 05. PMID: 23725333.
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Langmuir. 2013 Jun 25;29(25):7571-5. doi: 10.1021/la4002847. Epub 2013 Jun 05.

High-density liquid-crystalline azobenzene polymer brush attained by surface-initiated ring-opening metathesis polymerization.

Langmuir : the ACS journal of surfaces and colloids

Hafiz Ashraful Haque, Soutarou Kakehi, Mitsuo Hara, Shusaku Nagano, Takahiro Seki

Affiliations

  1. Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan.

PMID: 23725333 DOI: 10.1021/la4002847

Abstract

High-density polynorbornene azobenzene liquid-crystalline brushes are synthesized on quartz substrates by surface-initiated ring-opening metathesis polymerization (SI-ROMP) using Grubbs third-generation catalyst. The grafting process is controlled over the thickness of the brush from a solid-supported substrate in a stoichiometric manner. A highly ordered liquid-crystal arrangement was formed for such brushes as revealed by spectroscopic measurements and grazing angle X-ray diffraction analysis. Marked features of this method in the structure and photoalignment behavior are unveiled by comparison with brushes made by surface-initiated atom-transfer radical polymerization (SI-ATRP).

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