Mechanical orientation in thermotropic liquid crystal state and magnetic orientation in solvent evaporation process via lyotropic liquid crystal state of an amphotropic low-bandgap liquid-crystalline -conjugated polymer

被引:5
作者
Goto, Hiromasa [1 ]
Wang, Aohan [1 ]
Nimori, Shigeki [2 ]
Kawabata, Kohsuke [1 ]
机构
[1] Univ Tsukuba, Fac Pure & Appl Sci, Div Mat Sci, Tsukuba, Ibaraki, Japan
[2] Natl Inst Mat Sci, Tsukuba Magnet Lab, Tsukuba, Ibaraki, Japan
关键词
liquid crystal; band structure; low-bandgap; chevron structure; uniaxial orientation; POLARIZED-LIGHT; ALIGNMENT; DERIVATIVES;
D O I
10.1080/02678292.2013.818168
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Molecular orientations by shear stress and magnetic field were carried out to obtain a uniaxial, low-bandgap, amphotropic liquid-crystalline (LC) -conjugated polymer. Orientation of a thick polymer film shows orientation along the shear stress, but a thin sample produced by a spatula drawing on a glass substrate produces LC band structure with a chevron pattern. Furthermore, we report the orientation of a lyotropic LC polymer under magnetic field.
引用
收藏
页码:1159 / 1166
页数:8
相关论文
共 26 条
[1]   Liquid crystalline organic semiconductors: nematic spiro[cyclopentyl-1,9′]fluorenes [J].
Billa, Muralidhar Reddy ;
Kassireddy, Krishna ;
Haro, Marta ;
Al-Kalifah, Manea S. ;
Kelly, Stephen M. ;
Kitney, Stuart P. ;
O'Neill, Mary .
LIQUID CRYSTALS, 2011, 38 (07) :813-829
[2]   CONJUGATED POLYMER ELECTROLUMINESCENCE [J].
BRADLEY, DDC .
SYNTHETIC METALS, 1993, 54 (1-3) :401-415
[3]   The role of interface effects on the reflection of circularly polarised light from the thin-film structure of scarabus beetles [J].
Brink, D. J. ;
van der Berg, N. G. ;
Prinsloo, L. C. .
SURFACE AND INTERFACE ANALYSIS, 2008, 40 (3-4) :769-771
[4]   Electrochemical Considerations for Determining Absolute Frontier Orbital Energy Levels of Conjugated Polymers for Solar Cell Applications [J].
Cardona, Claudia M. ;
Li, Wei ;
Kaifer, Angel E. ;
Stockdale, David ;
Bazan, Guillermo C. .
ADVANCED MATERIALS, 2011, 23 (20) :2367-2371
[5]   A Novel Thiophene Derivative-based Conjugated Polymer for Polymer Solar Cells with High Open-circuit Voltage [J].
Chen Lie ;
Shen Xingxing ;
Chen Yiwang .
CHINESE JOURNAL OF CHEMISTRY, 2012, 30 (09) :2219-2224
[6]   Circular polarization vision in a stomatopod crustacean [J].
Chiou, Tsyr-Huei ;
Kleinlogel, Sonja ;
Cronin, Tom ;
Caldwell, Roy ;
Loeffler, Birte ;
Siddiqi, Afsheen ;
Goldizen, Alan ;
Marshall, Justin .
CURRENT BIOLOGY, 2008, 18 (06) :429-434
[7]   A novel function for a carotenoid: astaxanthin used as a polarizer for visual signalling in a mantis shrimp [J].
Chiou, Tsyr-Huei ;
Place, Allen R. ;
Caldwell, Roy L. ;
Marshall, N. Justin ;
Cronin, Thomas W. .
JOURNAL OF EXPERIMENTAL BIOLOGY, 2012, 215 (04) :584-589
[8]   A specialized dorsal rim area for polarized light detection in the compound eye of the scarab beetle Pachysoma striatum [J].
Dacke, M ;
Nordström, P ;
Scholtz, CH ;
Warrant, EJ .
JOURNAL OF COMPARATIVE PHYSIOLOGY A-NEUROETHOLOGY SENSORY NEURAL AND BEHAVIORAL PHYSIOLOGY, 2002, 188 (03) :211-216
[9]   THE MECHANISM OF POLYMER ALIGNMENT OF LIQUID-CRYSTAL MATERIALS [J].
GEARY, JM ;
GOODBY, JW ;
KMETZ, AR ;
PATEL, JS .
JOURNAL OF APPLIED PHYSICS, 1987, 62 (10) :4100-4108
[10]  
Goto H, 2013, J MAT SCI IN PRESS