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Appelhans, D. ; Zhong, Y. ; Komber, H. ; Friedel, P. ; Oertel, U. ; Scheler, U. ; Morgner, N. ; Kuckling, D. ; Richter, S. ; Seidel, J. ; Brutschy, B. ; Voit, B.
Oligosaccharide-modified poly(propyleneimine) dendrimers: Synthesis, structure determination, and CuII complexationa

The multiple application of reductive amination on primary amino groups of first and second generation poly(propyleneimine) dendrimers is used as a one-pot approach to introduce twice the amount of the oligosaccharide units as surface groups, compared to initially present amino groups in the first and second generation dendrimers. This was proven by 1H NMR, MALDI-TOF-MS, and LILBID-MS analysis. The size of these dendrimers was determined by the hydrodynamic radius using pulsed field gradient NMR and dynamic light scattering. Molecular modeling confirmed the presence of dense-shell dendrimers. These dendrimers exhibit a generation dependent CuII/dendrimer ratio in an aqueous environment, highlighting these materials as possible metal-carrier systems with a well-defined oligosaccharide protection shell for application in a biological environment.

Quelle
Macromolecular Bioscience 7

Seiten
373-383

DOI
http://dx.doi.org/10.1002/mabi.200600260

Erschienen am
April 2007
 
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