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

Source: [Core-shell structures in single flexible-semiflexible block copolymers: Finding the free energy minimum for the folding transition](<https://www.sota2.com/research/paper/68fa27bf2c2a3760193c49f8>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-28T13:52:45.984Z

Authors: Natsuhiko Yoshinaga, Kenichi Yoshikawa

Published: 2007-06-11T02:07:12.000Z

## Abstract

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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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/0706.1389>)

[PDF](<https://arxiv.org/pdf/0706.1389.pdf>)