Core functionality and scaling behavior of lysine dendrimers

Research output: Contribution to journalResearch articleContributedpeer-review


  • B. Fritzinger - (Author)
  • D. Appelhans - (Author)
  • B. Voit - , Leibniz Institute of Polymer Research Dresden (Author)
  • U. Scheler - (Author)


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.


Original languageEnglish
Pages (from-to)1647-1650
Number of pages4
JournalMacromolecular rapid communications
Issue number20
Publication statusPublished - 24 Oct 2005
Externally publishedYes

External IDs

Scopus 27544471319
ORCID /0000-0002-4531-691X/work/148607715



  • Pfg nmr, Dendrimers, Diffusion, Hydrodynamic size, Scaling exponent