The European Physical Journal E

, Volume 4, Issue 1, pp 93–101 | Cite as

Stiffness and conformations of molecular bottle-brushes strongly adsorbed on a flat surface

  • I.I. Potemkin
  • A.R. Khokhlov
  • P. Reineker

Abstract:

A theory of the conformational behavior and analysis of the persistence length of molecular bottle-brushes strongly adsorbed on a flat surface in a good solvent is presented. For long enough side chains we have shown that the adsorption of a small fraction of side chains already leads to significant increase of the stiffness and drastic conformational changes of the brush in comparison with the 3D case. For a symmetrical distribution of the adsorbed side chains with respect to the backbone, the equilibrium conformation of the brush is close to a rod-like one due to the very large stiffness of the molecule. Under certain conditions the excluded-volume interactions of the side chains of an asymmetrical brush can lead to its bending or twisting in spiral. The obtained results are in good agreement with computer simulations.

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2001

Authors and Affiliations

  • I.I. Potemkin
    • 1
  • A.R. Khokhlov
    • 1
  • P. Reineker
    • 2
  1. 1.Physics Department, Moscow State University, Moscow, 117234 RussiaRU
  2. 2.Department of Theoretical Physics, University of Ulm, 89069 Ulm, GermanyDE

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