GIST Scholar
College of Engineering
Department of Materials Science and Engineering
1. Journal Articles
Redox-Responsive Self-Assembly of Amphiphilic Multiblock Rod-Coil Polymers
- Type
- Article
- Citation
- Macromolecules, v.50, no.20, pp.8185 - 8191
- Issued Date
- 2017-10
- Abstract
- We report redox-responsive aggregation-disaggregation behaviors of a multiblock rod-coil polymer synthesized via a condensation of diaminoheptaaniline and bis-succinimidyl ester-terminated oligoethylene glycol. The emeraldine base state of these multiblock polymers formed spherical nanoparticles in water, whereas the aggregates disassembled upon being reduced to the leucoemeraldine base state. The redox-responsiveness was accounted for by the formation of a compound micelle consisting of three-dimensionally interconnected, smaller puck-shaped rod-coil micellar aggregates. The rodlike heptaaniline blocks in the emeraldine base state packed parallel to each other and compactly via intermolecular hydrogen bonding to form the puck-shaped aggregates, which were bridged by oligoethylene glycol coils emanating from their two faces. It was demonstrated that the oxidized state of the rod-coil network within the compound micelles could entrap guest molecules, and reducing this network could release them. The rod-coil compound micelles with longer coil bridges exhibited a greater extent of entrapment and a higher loading efficiency. © 2017 American Chemical Society.
- Publisher
- American Chemical Society
- ISSN
- 0024-9297
- Appears in Collections:
- Department of Materials Science and Engineering > 1. Journal Articles
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