Anisotropic Functionalization of Clusters

15.11.2010 - 15.05.2014
Forschungsförderungsprojekt
Inorganic-organic hybrid materials had major impact on materials science in the past 15-20 years. In this class of materials, molecular or nanoscale inorganic and organic building blocks are combined with each other giving rise to new materials properties. Various types of such materials have been prepared by various preparative routes. A relatively new sub-class of inorganic-organic hybrid materials are based on molecular inorganic clusters as pre-formed inorganic ¿nanobuilding blocks¿. The work aims at stable and well characterized clusters with functional ligands in a defined spatial arrangement. Several preparative approaches will be explored. These clusters will later be used as ¿designer nanobuilding blocks¿ for hybrid materials. The clusters must have Lego® brick characteristics, such as a specific shape and a defined number and geometrical arrangement of reactive sites. The major challenges of the proposed project thus will be (i) to prepare clusters with Lego® brick characteristics which are stable in solution against re-organization or degradation, (ii) to prepare clusters with both functional and non-functional ligands, where the functional ligands are arranged in a pre-determined geometry, (iii) to prevent re-organization or degradation of the cluster core during introducing, modifying or exchanging ligands, (iv) to control dynamic site exchange of the ligands at the cluster surface and exchange processes with the environment in order to prevent loss of directionality and functionality. A new concept to prepare such cluster is ¿anisotropic functionalization¿ of clusters, which will take advantage of structurally or chemically non-equivalent coordination sites at the cluster surface for site-selective functionalization.

Personen

Projektleiter_in

Institut

Grant funds

  • FWF - Österr. Wissenschaftsfonds (National) Austrian Science Fund (FWF)

Forschungsschwerpunkte

  • Composite Materials: 100%

Schlagwörter

DeutschEnglisch
MetallclusterMetal clusters
Funktionelle LigandenFunctional ligands
Nanoskalige BaugruppenNanosized building blocks

Publikationen