Effect of Recording Time on Grating Formation and Enhancement in an Amphiphilic Diblock Liquid-Crystalline Copolymer

被引：9

作者：

Yu, Haifeng ^{[1
]}

Naka, Yumiko ^{[1
]}

Shishido, Atsushi ^{[1
]}

Iyoda, Tomokazu ^{[1
]}

Ikeda, Tomiki ^{[1
]}

机构：

[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2009年 / 498卷

关键词：

amphiphilic diblock copolymer; azobenzene-containing liquid-crystalline polymer; diffraction efficiency; holographic grating; nano-scaled phase separation; PHOTOCHEMICAL PHASE-TRANSITION; SURFACE-RELIEF GRATINGS; PHOTOINDUCED ALIGNMENT; FILMS; POLYMERS; STORAGE; MOTIONS;

D O I：

10.1080/15421400802612094

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To precisely control the first-order diffraction efficiency of holographic gratings recorded in an amphiphilic diblock liquid-crystalline copolymer P40A37, effect of recording time on grating formation and enhancement was studied systematically. Several parameters such as surface relief, the first-order diffraction efficiency, the maximum transmittance under an optical polarizing microscope and order parameters of grating samples were evaluated before and after annealing. Then the enhancement coefficient with recording time was estimated. The best enhancement effect was obtained at 10-s recording upon nano-scaled phase separation. By precisely adjusting the recording time, the diffraction efficiency of holographic gratings in P40A37 can be finely controlled from 0.13% to 10%.

引用

页码：29 / 39

页数：11

共 24 条

[1] Model of laser-driven mass transport in thin films of dye-functionalized polymers
Barrett, CJ
Rochon, PL
Natansohn, AL
[J]. JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (04) : 1505 - 1516
[2] Collier R. J., 1971, Optical Holography
[3] FIORE GD, 2001, ADV FUNCT MATER, V11, P457
[4] Photomodulation of liquid crystal orientations for photonic applications
Ikeda, T
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (09) : 2037 - 2057
[5] OPTICAL SWITCHING AND IMAGE STORAGE BY MEANS OF AZOBENZENE LIQUID-CRYSTAL FILMS
IKEDA, T
TSUTSUMI, O
[J]. SCIENCE, 1995, 268 (5219) : 1873 - 1875
[6] Photoinduced motions in azo-containing polymers
Natansohn, A
Rochon, P
[J]. CHEMICAL REVIEWS, 2002, 102 (11) : 4139 - 4175
[7] NEFF VD, 1974, LIQUID CRYSTALS PLAS, V2, P231
[8] Stracke A, 2000, ADV MATER, V12, P282, DOI 10.1002/(SICI)1521-4095(200002)12:4<282::AID-ADMA282>3.0.CO
[9] 2-P
[10] Synthesis, nanostructures, and functionality of amphiphilic liquid crystalline block copolymers with azobenzene moieties
Tian, YQ
Watanabe, K
Kong, XX
Abe, J
Iyoda, T
[J]. MACROMOLECULES, 2002, 35 (09) : 3739 - 3747

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