CEDENNA:

Contributes to the education of scientists qualified for developing both basic and applied research.

Investigation Areas


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Chemistry of Nanostructures

The main goal of this research group is related to polymetallic species and molecular engineering, focused in the design, synthesis and characterization of new nanostructured materials. The main task is the study of inorganic nanostructures derived from oxides and sulphides and also hybrid organic-inorganic nanostructures of low dimensionality. The relation between composition, structure, size, shape of the nanoparticles, and also mechanisms involved in the generation of new nanostructured compounds with potential use as materials. The functionalization, doping, modification of the crystalline lattices or generation of new composites, thus permitting the modulation the electronic properties of these compounds, giving rise to a better use of their magnetic, light harvesting, catalytic, biocide and ionic exchange properties, is being developed by Line 3.

Specific research done by this group:

  1. The intercalation chemistry of redox active compounds in lamellar materials derived from chalcogenide-phosphates (MnPS3, CdPS3) focused on the synthetic conditions and the modification of the optic and magnetic properties, together with the generation of nanoparticles of these materials has been done by the group.
    Studies on the conversion of intercalated composites of vanadium pentoxide (V2O5) into tubular nanostructures, leading to the discovery of novel nanostructures such as “nanoorchids” and “nanobearings” has been done by the researchers of Line 3. Interesting results have been obtained related to the synthetic routes, simple, reproducible and eventually scalable, to obtain hybrid lamellar, flat and tubular nanocompounds derived from clays (montmorillonite), silicates and semi-conductors (TiO2, ZnO, V2O5, MoS2, CdS). All of these new materials can be obtained as lamellae structures functionalized with molecular species (surfactants such as amines, alcohols, long chain carboxylic acids, neutral and ionic) and polymeric (polyethers and polysaccharides). This group has also experience in the intercalation chemistry of molybdenum disulphide, focused on the tuning of the potential and transport properties.
  2. The preparation of 0D, 1D, 2D, and 3D hybrid organo-inorganic polymetallic materials, using transition metal and lanthanide ions and carboxylate ligands by bench, hydrothermal and solvothermal techniques, and the magnetostructural and optical characterization of the obtained species.
  3. The synthesis of high nuclearity and symmetry 0D molecular compounds based on Mo, V, W, Nb , whose electronic and electrochemical properties are highly related with the optical and magnetic properties. These molecular materials are of great interest, since they can be the basis of more complex materials.
  4. The theoretical rationalization of the electronic structure is fundamental for the understanding of the understanding of the magnetic, optical and electrochemical properties of the studied systems. DFT calculations are done in order to obtain information and explanations for the observed phenomena.

In summary, our experience permits us to do fundamental and applied research related to chemical nanostructures, which have been proposed to be studied as themes in the Basal Project CEDENNA, and to be used as building blocks of materials of greater complexity. These will have a transversal field of application, being useful in areas such as environmental remediation, medical applications, environmental friendly packaging, food and cosmetic industry, and catalytic industrial processes. Many of these pure and well

Diego Venegas Yazigi

(56-2) 27181079 - 27181046, (56-2) 26812108
Facultad de Química y Biología, Universidad de Santiago de Chile.
Avda. Libertador Bernardo O´Higgins 3363, Estación Central, Casilla 30, Matucana, Santiago, Chile.

Investigation Areas:

  • Chemistry of Nanostructures

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