Synthesis and photo-crosslinking of oriented side-chain liquid crystalline polymers

✍ Scribed by Nobuhiro Kawatsuki; Hirohumi Takatsuka; Tohei Yamamoto; Osamu Sangen

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 589 KB
• Volume: 17
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.1996.030171005

✦ Synopsis

Abstract

New photo‐crosslinkable side‐chain liquid‐crystalline methacrylate polymers comprising m‐[4′‐(n‐cinnamoyloxyalkoxy)biphenyl‐4‐yloxy]alkyl groups (m, n = 2, 6) were synthesized. All polymers exhibit a nematic liquid‐crystalline phase depending on the spacer length (5a–5d). Aligned thin films could be obtained using a rubbed polyimide‐coated substrate, and they could be photo‐crosslinked without change in the aligned structure. The photo‐crosslinked film of 5d (m = n = 6) showed a stable alignment up to 300°C.