A Main-Chain Liquid-Crystalline Oligomer Prepared by in situ Photopolymerization of an LC Monomer Having Cinnamate Moieties

✍ Scribed by Hideyuki Kihara; Nobuyuki Tamaoki

• Book ID: 102492507
• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 157 KB
• Volume: 27
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200600108

✦ Synopsis

Abstract

Summary: A liquid‐crystalline (LC) compound, having a cinnamate moiety on each end of the molecule, was synthesized and irradiated with UV light in its LC phase in the presence of a triplet sensitizer. Various measurements of the irradiated sample revealed that the linearly structured LC oligomers were formed by [2+2] cycloaddition of the cinnamate moieties, and that the resultant cyclobutane units dominantly assumed an anti head‐to‐head configuration.

Schematic structures of the LC oligomer obtained by photopolymerization.

imageSchematic structures of the LC oligomer obtained by photopolymerization.