A poly(propylene imine) (DAB-Am-64) dendrimer as Cu2+ chelator for the synthesis of copper oxide clusters embedded in sol-gel derived matrixes

Raffet Velarde-Ortiz, Gustavo Larsen

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The fifth generation poly(propylene)imine dendrimer (DAB-Am-64) was used as a macrochelating agent to produce well-dispersed CuO nanoclusters embedded in a silica solgel derived matrix. Several characterization methods, including X-ray absorption and diffuse reflectance Fourier transform IR spectroscopies, temperature-programmed oxidation, transmission electron microscopy, and X-ray diffraction, were used for the characterization of the materials. The presence of Cu was found to catalyze the oxidative removal of the dendrimer guest from the silica matrix. The proposed synthetic method, which is expected to be useful for a range of transition metal (e.g., Cu, Ni, Co, Pd, Pt, and Zn) ions with some affinity for amine-type ligands, is viewed as particularly suitable for the synthesis of model supported catalysts and materials with unusual magnetic and optical properties.

Original languageEnglish (US)
Pages (from-to)858-866
Number of pages9
JournalChemistry of Materials
Volume14
Issue number2
DOIs
StatePublished - Mar 19 2002

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Dendrimers
Copper oxides
Chelating Agents
Silicon Dioxide
Sol-gels
Polypropylenes
Silica
Nanoclusters
X ray absorption
Catalyst supports
Amines
Transition metals
Infrared spectroscopy
Magnetic properties
Fourier transforms
Optical properties
Ligands
Ions
Transmission electron microscopy
X ray diffraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

A poly(propylene imine) (DAB-Am-64) dendrimer as Cu2+ chelator for the synthesis of copper oxide clusters embedded in sol-gel derived matrixes. / Velarde-Ortiz, Raffet; Larsen, Gustavo.

In: Chemistry of Materials, Vol. 14, No. 2, 19.03.2002, p. 858-866.

Research output: Contribution to journalArticle

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