High-Density Liquid-Crystalline Azobenzene Polymer Brush Attained by Surface-Initiated Ring-Opening Metathesis Polymerization

被引：37

作者：

Haque, Hafiz Ashraful ^{[1
]}

Kakehi, Soutarou ^{[1
]}

Hara, Mitsuo ^{[1
]}

Nagano, Shusaku ^{[2
,3
]}

Seki, Takahiro ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Mol Design & Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Venture Business Lab, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[3] Japan Sci & Technol Agcy PRESTO, Nagoya, Aichi, Japan

来源：

LANGMUIR | 2013年 / 29卷 / 25期

基金：

日本科学技术振兴机构;

关键词：

RADICAL POLYMERIZATION; ALKYLIDENE COMPLEXES; CROSS-METATHESIS; FILM; CYCLOPOLYMERIZATION; PHOTOALIGNMENT; SILICON; SYSTEMS;

D O I：

10.1021/la4002847

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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).

引用

页码：7571 / 7575

页数：5

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