Photo-induced orientation of a film of ladderlike polysiloxane bearing dual photoreactive side groups

被引：29

作者：

Gu, HW

Xie, P ^{[1
]}

Shen, DY

Fu, PF

Zhang, JM

Shen, ZR

Tang, YX

Cui, L

Kong, B

Wei, XF

Wu, Q

Bai, FL

Zhang, RB

机构：

[1] Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China

[2] Dow Corning Corp, Midland, MI 48686 USA

[3] Nankai Univ, State Key Lab Funct Polymer Mat Adsorpt & Separat, Tianjin 300071, Peoples R China

来源：

ADVANCED MATERIALS | 2003年 / 15卷 / 16期

关键词：

D O I：

10.1002/adma.200305241

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A newly designed ladder-like polysiloxane (LPS) containing dual photoreactive side groups has been synthesized for the purpose of generating high-quality photo-alignment layers with controllable pretilt angle (similar to 1-7degrees, see Figure and cover). Integrated spectroscopic methods of UV dichroism, surface-enhanced Raman scattering (SERS), and FT-IR are used together for the first time to elucidate the photo-alignment mechanism and the real cause of the high pretilt angle.

引用

页码：1355 / +

页数：5

共 24 条

[1] COMMAND SURFACES .10. NOVEL POLYMETHACRYLATES WITH LATERALLY ATTACHED AZOBENZENE GROUPS DISPLAYING PHOTOINDUCED OPTICAL ANISOTROPY [J].

AKIYAMA, H ;

KUDO, K ;

ICHIMURA, K .

MACROMOLECULAR RAPID COMMUNICATIONS, 1995, 16 (01) :35-41

[2] DETERMINATION OF TILT ANGLES AT SURFACES OF SUBSTRATES IN LIQUID-CRYSTAL CELLS [J].

BAUR, G ;

WITTWER, V .

PHYSICS LETTERS A, 1976, 56 (02) :142-144

[3] A combined method based on rubbing and UV-irradiation for preparing stable alignment-layers with high pretilt angles [J].

Cui, L ;

Jin, W ;

Liu, YB ;

Xie, P ;

Zhang, RB ;

Zhu, CF ;

Wang, C .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1999, 333 :135-+

[4] Stable photoalignment layer for nematic liquid crystals based on ladder-like polysilsesquioxanes [J].

Cui, L ;

Jin, W ;

Liu, JN ;

Tang, YX ;

Xie, P ;

Zhang, RB .

LIQUID CRYSTALS, 1998, 25 (06) :757-764

[5]

EGERTON PL, 1981, MACROMOLECULES, V14, P95, DOI 10.1021/ma50002a019

[6]

Ge JJ, 1998, MACROMOL RAPID COMM, V19, P619, DOI 10.1002/(SICI)1521-3927(19981201)19:12<619::AID-MARC619>3.3.CO

[7]

2-Q

[8] Rubbing-induced molecular reorientation on an alignment surface of an aromatic polyimide containing cyanobiphenyl side chains [J].

Ge, JJ ;

Li, CY ;

Xue, G ;

Mann, IK ;

Zhang, D ;

Wang, SY ;

Harris, FW ;

Cheng, SZD ;

Hong, SC ;

Zhuang, XW ;

Shen, YR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (24) :5768-5776

[9] SURFACE-MEDIATED ALIGNMENT OF NEMATIC LIQUID-CRYSTALS WITH POLARIZED LASER-LIGHT [J].

GIBBONS, WM ;

SHANNON, PJ ;

SUN, ST ;

SWETLIN, BJ .

NATURE, 1991, 351 (6321) :49-50

[10]

HAAREN JV, 1996, NATURE, V381, P190

← 1 2 3 →