Authors Fritzinger, B. ; Appelhans, D. ; Voit, B. ; Scheler, U.
Title Core Functionality and Scaling Behavior of Lysine Dendrimers
Date 19.10.2005
Number 13598
Abstract <B>Summary:</B> A scaling exponent to describe the dependence of the hydrodynamic radius as a characteristic length of the molecule on the molecular weight, has been determined for low generation dendrimers with a thiacalixarene core and lysine dendrons. The hydrodynamic radius has been calculated from the diffusion coefficient measured by pulsed-field-gradient NMR spectroscopy. Scaling exponents of 2.0 for the lysine monodendron, 2.3 for a dendrimer with a bifunctional core, and 3.9 for a dendrimer with a tetrafunctional core have been determined. For a given structure of the dendrons, the scaling exponent reflects the functionality of the core of the dendrimers.
Publisher Macromolecular Rapid Communications
Citation Macromolecular Rapid Communications 26 (2005) 1647-1650
Tags dendrimers diffusion scaling exponent hydrodynamic size pfg nmr nuclear-magnetic-resonance field gradient intrinsic-viscosity internal structure pamam dendrimers spin echoes diffusion dynamics systems sans

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