Single chains of block copolymers in poor solvents: Handshake, spiral, and lamellar globules formed by geometric frustration
Parsons, D.F. and Williams, D.R.M. (2007) Single chains of block copolymers in poor solvents: Handshake, spiral, and lamellar globules formed by geometric frustration. Physical Review Letters, 99 (22). Article 228302.
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A single multiblock copolymer chain in poor solvent undergoes microphase separation within its own globule, driven by the same kind of forces operating in the bulk system. However, the necessity of packing a large AB interface into a small volume leads to novel convoluted geometries. Long block lengths form a double droplet. Very short block lengths exhibit bulk behavior, forming a lamellar globule. With intermediate block lengths, the AB interface buckles to form a hand shake or spiral dicluster. An order-disorder transition is reported for short block lengths.
|Publication Type:||Journal Article|
|Publisher:||American Physical Society|
|Copyright:||© 2007 The American Physical Society.|
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