Architecture of nanostructured polymers by segregated domain crosslinking of block-graft copolymer micelles

✍ Scribed by Koji Ishizu; Takafumi Hosokawa

• Book ID: 104528856
• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 200 KB
• Volume: 50
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/pi.763

✦ Synopsis

Abstract

Polystyrene‐block‐polyisoprene (PS‐block‐PI; high 3,4‐structure) diblock copolymer was prepared by living anionic polymerization. For transfer into a reactive intermediate, the hydroxylation of the double bonds of PI block was achieved by hydroboration, followed by oxidation. Esterification of the hydroxy‐derivative with stearoyl chloride or decanoyl chloride resulted in block‐graft copolymers composed of PS (flexible chain)‐grafted long alkane (stretched chains). After partial chloromethylation of PS block copolymer, photofunctional N,N‐diethyldithiocarbamate (DC) groups were introduced into such pendant sites by reaction with the corresponding sodium salt. We studied the self‐assemblies of photofunctional block‐graft copolymers in a selective solvent, such as heptane, and constructed nanostructured polymers by crosslinking PS cores under UV irradiation.

© 2001 Society of Chemical Industry