In situ control of the photoinduced birefringence of photoalignable liquid crystalline polymeric films

被引：0

作者：

Kawatsuki, Nobuhiro ^{[1
]}

Oya, Ryota ^{[1
]}

Kondo, Mizuho ^{[1
]}

Sakamoto, Moritsugu ^{[2
]}

Ono, Hiroshi ^{[2
]}

机构：

[1] Univ Hyogo, Dept Appl Chem, 2167 Shosha, Himeji, Hyogo 6712280, Japan

[2] Nagaoka Univ Technol, Dept Elect Engn, 1603-1 Kamitomioka, Nagaoka, Niigata 9402188, Japan

来源：

LIQUID CRYSTALS XXVIII | 2024年 / 13121卷

关键词：

Photoalignment; liquid crystalline polymer; molecular reorientation; birefringence; birefringent film; polarization grating; holography; MOLECULAR-REORIENTATION; ALIGNMENT; ORIENTATION;

D O I：

10.1117/12.3026918

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoalignment is one the important techniques to fabricate flat panel displays, birefringent functional films, and polarized optical diffraction devises. Thinner optical devises are attained when the optical film exhibits high birefringence. We investigated systematic studies on photoalignable liquid crystalline polymers (PLCPs), which achieve molecularly oriented structure for themselves, showing the bulk-photoalignment. This paper describes new PLCPs which reveal high photosensitivity, high photoalignability, and controllability of generated birefringence by means of in situ modification of the oriented mesogenic side groups. The initial generated birefringence of the PLCP films is 0.15, whereas the improved birefringence exceeds 0.4 is achieved via in situ modification of the oriented mesogenic side groups. Using PLCP films, polarization gratings are fabricated.

引用

页数：7

共 11 条

[1] Applications of liquid crystal planer optical elements based on photoalignment technology in display and photonic devices [J].

Chen, Fangfang ;

Zheng, Jihong ;

Xing, Chenchen ;

Sang, Jingxin ;

Shen, Tong .

DISPLAYS, 2024, 82

[2]

Chigrinov V.G., 2008, PHOTOALIGNMENT LIQUI

[3] Photoinduced cooperative reorientation in photoreactive hydrogen-bonded copolymer films and LC alignment using the resultant films [J].

Kawatsuki, Nobuhiro ;

Kawanishi, Takayuki ;

Uchida, Emi .

MACROMOLECULES, 2008, 41 (13) :4642-4650

[4] Photoinduced Orientation of Photoresponsive Polymers with N-Benzylideneaniline Derivative Side Groups [J].

Kawatsuki, Nobuhiro ;

Matsushita, Hitomi ;

Washio, Teppei ;

Kozuki, Junji ;

Kondo, Mizuho ;

Sasaki, Tomoyuki ;

Ono, Hiroshi .

MACROMOLECULES, 2014, 47 (01) :324-332

[5] Photoinduced molecular reorientation in photoreactive liquid crystalline copolymers in a phase retarder application [J].

Kawatsuki, Nobuhiro ;

Shoji, Hiroshi ;

Yamaguchi, Kotaro ;

Kondo, Mizuho ;

Tsubaki, Kouki .

POLYMER, 2011, 52 (25) :5788-5794

[6] Photoalignment and Photoinduced Molecular Reorientation of Photosensitive Materials [J].

Kawatsuki, Nobuhiro .

CHEMISTRY LETTERS, 2011, 40 (06) :548-554

[7] Photoinduced reorientation and polarization holography in photo-cross-linkable liquid crystalline polymer films with large birefringence [J].

Kawatsuki, Nobuhiro ;

Yamashita, Ayumi ;

Kondo, Mizuho ;

Matsumoto, Taro ;

Shioda, Tatsutoshi ;

Emoto, Akira ;

Ono, Hiroshi .

POLYMER, 2010, 51 (13) :2849-2856

[8] Birefringence Control of Photoalignable Liquid Crystalline Polymers Based on an In Situ Exchange of Oriented Mesogenic Side Groups [J].

Sakai, Ayaka ;

Noshizono, Toshiki ;

Kondo, Mizuho ;

Sasaki, Tomoyuki ;

Sakamoto, Moritsugu ;

Ono, Hiroshi ;

Kawatsuki, Nobuhiro .

CHEMISTRY LETTERS, 2022, 51 (02) :91-93

[9] Fabrication and performance of efficient thin circular polarization gratings with Bragg properties using bulk photo-alignment of a liquid crystalline polymer [J].

Sakhno, Oksana ;

Gritsai, Yuri ;

Sahm, Hagen ;

Stumpe, Joachim .

APPLIED PHYSICS B-LASERS AND OPTICS, 2018, 124 (03)

[10] Photoinduced orientation in photoreactive hydrogen-bonding liquid crystalline polymers and liquid crystal alignment on the resultant films [J].

Uchida, Emi ;

Kawatsuki, Nobuhiro .

MACROMOLECULES, 2006, 39 (26) :9357-9364

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