Preparation and thermal behavior of spin polymers and their precursors based on azomethine mesogens

✍ Scribed by Hitoshi Tanaka; Yukio Shibahara; Thuneyuki Sato; Tadatoshi Ota

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 400 KB
• Volume: 29
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(93)90241-7

✦ Synopsis

Chiral liquid crystalline spin molecules and their precursors have been prepared. Condensation of 4-substituted anilines and chiral 2-hydroxybenzaldehyde gave mesogenic vinyl monomers showing chiral smectic phases slightly above ambient temperature. Radical polymerization of them gave polymers with molecular weight of several tens of thousands in high yield. Treatment of the polymers with oxidizing reagents gave two types of polymers with unpaired electrons, i.e. phenoxy and amino spin polymers. In addition, stable nitroxy radicals with azometbine moiety were also prepared and their properties were examined.