Seeded Growth and Solvent-Induced Fragmentation of Fiberlike Polyferrocenylsilane–Polyisoprene Block Copolymer Micelles

✍ Scribed by Jieshu Qian; Gerald Guerin; Graeme Cambridge; Ian Manners; Mitchell A. Winnik

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 360 KB
• Volume: 31
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.201000092

✦ Synopsis

Abstract

Addition of a concentrated solution of PI~1000~–PFS~50~ dissolved in THF to a solution of PI~1000~–PFS~50~ seed micelles in decane led to the formation of uniform elongated fiberlike micelles with a narrow length distribution. When additional THF (>10 vol.‐%) was added to the micelles, the micelle length decreased and the contour‐length distribution broadened. This effect was shown to be inconsistent with a transition to an equilibrium, in which individual polymer molecules dissociated from and added to existing micelles. Rather, it appears that the polar solvent induced fragmentation of the fiberlike micelles.

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