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New approaches for building potential magnetic materials: from isolated metal clusters to molecule-based magnets

English title New approaches for building potential magnetic materials: from isolated metal clusters to molecule-based magnets
Applicant Decurtins Silvio
Number 110976
Funding scheme SCOPES
Research institution Departement für Chemie und Biochemie Universität Bern
Institution of higher education University of Berne - BE
Main discipline Material Sciences
Start/End 01.01.2006 - 31.03.2009
Approved amount 68'500.00
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All Disciplines (2)

Discipline
Material Sciences
Physical Chemistry

Keywords (5)

synthesis; molecular magnetism; single molecular magnets; molecular clusters; co-ordination chemistry

Lay Summary (English)

Lead
Lay summary
There is currently a great deal of interest in the design, synthesis and properties of coordination polymers. They represent a new and active area of coordination chemistry because of their special roles in magnetic materials, non-linear optical materials, catalysis, etc. The most successful strategies for the design of coordination polymers are based on a building block (or “supramolecular synthon”) approach (like making things out of LEGO blocks). The design of one-, two-, or three-dimensional crystalline network structures can thus be achieved by choosing the desired combination of nodes and connectors.

Polynuclear metal carboxylate clusters represent versatile frameworks for the generation of numerous molecular magnetic arrays. Moreover, they also realistically exhibit phenomena known as “single molecule magnetism”(SMM). However, despite the characterization of many new polynuclear complexes, including those as SMMs, little analogous work has been done to build magnetic coordination polymers through the linking of metal clusters. Networks of metal clusters bridged by multifunctional ligands can result in stronger magnetic interactions than they are possible without such bonding.

The main goals of the proposed project “New Approaches for Building Potential Magnetic Materials: From Isolated Metal Clusters to Molecule-Based Magnets” is
(i) to fabricate new magnetic materials by connecting both small metal aggregates and nanosized clusters without decomposition of the latter using adequate linkers such as carboxylate and N-containing ligands
(ii) to examine the physical properties of both metal clusters and coordination polymers, looking for unusual magnetic behaviour.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

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