Dynamics of semiflexible regular hyperbranched polymers
Dynamics of semiflexible regular hyperbranched polymers
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DOI:
10.1063/1.4775584
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发表时间:
2013-01-21
影响因子:
4.4
通讯作者:
Blumen, Alexander
中科院分区:
文献类型:
--
作者:
Fuerstenberg, Florian;Dolgushev, Maxim;Blumen, Alexander
We study the dynamics of semiflexible Vicsek fractals (SVF) following the framework established by Dolgushev and Blumen [J. Chem. Phys. 131, 044905 (2009)], a scheme which allows to model semiflexible treelike polymers of arbitrary architecture. We show, extending the methods used in the treatment of semiflexible dendrimers by Furstenberg et al. [J. Chem. Phys. 136, 154904 (2012)], that in this way the Langevin-dynamics of SVF can be treated to a large part analytically. For this we show for arbitrary Vicsek fractals (VF) how to construct complete sets of eigenvectors; these reduce considerably the diagonalization problem of the corresponding equations of motion. In fact, such eigenvector sets arise naturally from a hierarchical procedure which follows the iterative construction of the VF. We use the obtained eigenvalues to calculate the loss moduli G ''(omega) of SVF for different degrees of stiffness of the junctions. Finally, we compare the results for SVF to those found for semiflexible dendrimers. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4775584]