Volume 19, Issue 6 pp. 298-308
Full Paper

Conformational Behavior of Bottle-Brush Polyelectrolytes with Charged and Neutral Side Chains

Qianqian Cao

Corresponding Author

Qianqian Cao

College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China

College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China.Search for more papers by this author
Chuncheng Zuo

Chuncheng Zuo

College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China

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Lujuan Li

Lujuan Li

College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China

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Nan Zhang

Nan Zhang

College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China

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First published: 23 August 2010
Citations: 11

Abstract

The conformational transition of a single bottle-brush polyelectrolyte with charged and neutral side chains is studied through MD simulations. Counterions are included explicitly and no additional salt is added. The structure of the polyelectrolyte and the counterion condensation are found to depend greatly on the Bjerrum length. As the Bjerrum length increases, the neutral side chains in a poor solvent can condense into clusters with variable size. Moreover, the polyelectrolyte forms globular structures at large or very small Bjerrum lengths. This transition is quite different from that in the case of a good solvent, in which there are not observable clusters and a globular structure is only formed at large Bjerrum lengths.

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