Core-shell structures in single flexible-semiflexible block copolymers: Finding the free energy minimum for the folding transition

Details Core-shell structures in single flexible-semiflexible block copolymers: Finding the free energy minimum for the folding transition Core-shell structures in single flexible-semiflexible block copolymers: Finding the free energy minimum for the folding transition

2007-06-11

arxiv.org/abs/0706.1389v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1063/1.2753838

We investigate the folding transition of a single diblock copolymer consisting of a semiflexible and a flexible block. We obtain a {\it Saturn-shaped} core-shell conformation in the folded state, in which the flexible block forms a core and the semiflexible block wraps around it. We demonstrate two distinctive features of the core-shell structures: (i) The kinetics of the folding transition in the copolymer are significantly more efficient than those of a semiflexible homopolymer. (ii) The core-shell structure does not depend on the transition pathway.

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