Issue 8, 2013

Semiflexibility induced range of conformations in dendrimers

Abstract

The fractal dimensions of semiflexible dendrimers are theoretically calculated within the framework of optimized Rouse–Zimm models, from the scattering intensity and the complex viscosity, as a function of the degree of flexibility. The fractal dimensions of the dendrimer consistently vary with the degree of flexibility to capture the entire spectrum of possible conformations spanning across the three distinct scaling regimes of a polymer. The expanded conformations display a fractal structure and mimic the behavior of model polymers in theta and good solvents. The compressed conformations in lower generations have a dense globular structure representing a collapsed walk in poor solvents, while at higher generations these conformations are highly compact and space-filling with extremely rugged surfaces. Our calculations are supported by earlier results obtained from experiments and simulations.

Graphical abstract: Semiflexibility induced range of conformations in dendrimers

Supplementary files

Article information

Article type
Communication
Submitted
15 Nov 2012
Accepted
12 Dec 2012
First published
04 Jan 2013

Soft Matter, 2013,9, 2375-2379

Semiflexibility induced range of conformations in dendrimers

A. Kumar and P. Biswas, Soft Matter, 2013, 9, 2375 DOI: 10.1039/C2SM27630E

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