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M. Bendová, M. Puchberger, U. Schubert:
"Functional Cadmium Sulfide Clusters As Nanosized Building Blocks For Hybrid Materials";
Talk: 13. Österreichische Chemietage, Wien; 2009-08-24 - 2009-08-27; in: "13. Österreichische Chemietage", (2009), ISBN: 978-3-900554-66-8; 1 pages.

The goal of our work is to synthesize molecular CdS clusters with polymerizable ligands ("functional" clusters) in order to use them as co-monomers in polymerization reactions. In this way, cluster-crosslinked polymers are formed which possess special physical, e.g. optoelectronic, properties. Generally, CdS clusters are prepared by the kinetic trapping method from a Cd²+ salt, a capping ligand, a counterion and a source of sulfur. We modified syntheses of the known cluster types ([Cd₁₀S₄(SPh)₁₆]^4-,[1] [Cd₁₇S₄(SPh)₂₈]^2- [2]) by using functional capping ligands instead of non-functional thiophenol and thus obtained new functional clusters. They were characterized by single-crystal XRD and solution NMR. It was observed that their behavior in solution is complicated and influenced by different effects: solvent coordination strength, exchange of ligands and counterions. Post-synthesis modification of the clusters and their covalent incorporation into a polymeric matrix was also investigated. Herein, modification of the clusters without
their disintegration is one of the main requirements.

Project Head Ulrich Schubert:
Polymere aus funktionellen Clustern