Our team is collaborating with the group of Jeffrey Long since 2007. A part of our collaborative work on the “Photomagnetic Materials” has been funded in 2007-2008 by the the France-Berkeley Fund (FBF).
A few words about Long’s work that focuses on developing new approaches to the synthesis of inorganic clusters and solids, with emphasis on controlling the physical structure of materials as a means of tailoring the physical properties. His group is involved in establishing predictive solid state reaction schemes, including dimensional reduction — a high-temperature method for dismantling binary solid frameworks. In addition, they have shown how molecular clusters can be used to expand the crystal structures of simple coordination solids, such as Prussian blue. The resulting materials present a series of stable microporous solids that can be directed toward functioning as sieves, sensors, and catalysts. Recently, these materials have also been developed for applications in hydrogen storage.
Our team is collaborating with the group of Kathryn Preuss since 2006. Our collaboration has been reinforced in 2008 by Nigel Hearns a former PhD student of Kathryn who joined the M3 team for one year as a postdoc funded by a NSERC (PDF) award.
A few words about Preuss’s work: “Molecular
materials” are crystalline, amorphous or liquid crystalline materials
composed of arrays of molecules, as opposed to solid state materials in
which no identifiable molecular components exist (e.g., ionic solids
such as NaCl.) The bulk material properties arise from the molecular
design, thus molecule-based materials are highly “tunable” using
well-understood synthetic chemical methodology. Designing materials at a
molecular level not only imparts a huge amount of control on a bulk
property but also allows for the incorporation of multiple potentially
desirable properties. Imagine, for example, a paint or coating that can
store digital data. Molecular magnets, molecular conductors, single
molecule magnets (SMMs), organic light emitting diodes (oLEDs) and
molecular switches are examples of molecular materials.
The rational design and
The M3 team and the ICMCB group started since 2006 a strong and efficient collaboration on photomagnetic molecule-based compounds establishing a small trans-laboratory research team composed of R. Clérac (CRPP), C. Mathonière (ICMCB), one joined Ph-D student (Rodica Ababei, 2007-2010), and one assistant professor (ATER, Marguerite Kalisz, 2008-2009). Very promising results on materials synthesized in the two neighboring groups or by coworkers have been obtained with the description of a nearly quantitative photo-induced electron transfer in polynuclear Fe/Co cyano-based complexes (J. Am. Chem. Soc. (2008), 130, 252).
The “Molecular Sciences” group of the ICMCB in Pessac is internationally recognized for its competences in the field of molecular photomagnetism. In 2001, the description of a switching effect due to a photo-induced electron transfer on a three-dimensional network containing molybdenum and copper opened a new field of investigation on the photomagnetic mixed-valence compounds. The expertise of the ICMCB group concerns mainly the synthesis and the characterization of photomagnetic molecular materials based on spin transition and/or electron transfer phenomena.
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