Synthesis and characterization of polyoxometalate-polyamino dendritic hybrid compounds

Maxym V. Vasylyev, Sylvain Gatard, Itsik Bar-Nahum, Leonid Konstantinovski, Ellen J. Wachtel, Ronny Neumann

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Organic-inorganic hybrid compounds were prepared by the reaction of a tin chloride-substituted polyoxometalate, [PSn(Cl)W11O39] 4- with tris(2-aminoethyl)amine, and poly(propylene)imine (DAB-Am) tetraamine and octaamine dendrimers. Translational diffusion coefficients of the hybrid compounds were measured in DMSO-d6 by the stimulated echo diffusion (STE) NMR technique. Molecular radii were derived from the diffusion coefficients by the Stokes-Einstein equation and appeared to be incorrect because of fast exchange on the NMR time scale of the counter cation in the solution, which led to an averaging of the NMR signal and high diffusion coefficients. An effective hydrodynamic diameter of the [PSn(Cl)W 11O39]4--polypropylenimine octaamine hybrid adduct was measured in a light scattering experiment.

Original languageEnglish
Pages (from-to)235-243
Number of pages9
JournalJournal of Cluster Science
Volume17
Issue number2
DOIs
Publication statusPublished - Jun 1 2006

Keywords

  • Dendrimers
  • Light scattering
  • Organic-inorganic hybrid compounds
  • PGSE- H-NMR experiments
  • Polyoxometalates

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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