Both looped and linear polydimethylsiloxane (PDMS) polymer brushes were fabricated onto a Si substrate using the ‘grafting to’ method. As water is a poor solvent for PDMS, linear polymer brushes tended to be dewetted in water, forming aggregates. Therefore, a linear polymer brush showed a rough surface in water. In contrast, a looped polymer brush surface was smooth even in water. Aggregation was suppressed because both ends were tethered to the surface.
- Shinichiro Sakurai
- Hirohmi Watanabe
- Atsushi Takahara