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Aldrich Materials Science discovers liquid-free preparation of metal organic frameworks
Date:12/20/2012

St. Louis, MO December 18, 2012 Researchers at Aldrich Materials Science, a strategic technology initiative of Sigma-Aldrich Corporation (NASDAQ:SIAL) have discovered an innovative way to design an important class of three-dimensional (3D) hybrid structures, Metal Organic Frameworks (MOFs), under completely liquid-free conditions. High purity MOF products prepared by the liquid-free process may be ideally suited as rare earth containing materials for sensors and detectors, electronic or magnetic materials. The discovery also extends liquid-free preparation techniques to a large new class of 3D-structured materials and is expected to lead to new products with unique properties and suitability for applications heretofore unknown.

A report of the Aldrich-developed procedure was recently published in the prominent peer-reviewed journal, Chemical Communications. Drs. Niraj Singh, Meenakshi Hardi and Viktor Balema from the Aldrich Hard Materials Center of Excellence demonstrated the synthesis of Y-MOF (MIL-78) using a room-temperature ball-milling process in the absence of a solvent or liquid grinding additive. In the process, yttrium hydride was ball-milled with solid high-melting trimesic acid to form Y-MOF (MIL-78). Gaseous hydrogen was the only by-product observed in the process. The liquid-free synthesis process yields MOF products of exceptional purity by preventing contamination from solvents and liquid residues.

Metal Organic Frameworks (MOFs) are an attractive class of highly ordered materials built by combining multi-functional organic molecules (linkers) and metal ions into a 3D network. The well-defined, highly-ordered, and readily-controlled structure of MOFs can be exploited in a diverse range of applications including gas storage, separations, catalysis, sensors and drug delivery. The presence of modifiable organic linkers in the MOF structure enables tunability of function and customization of end use.


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Contact: Viktor Balema
Viktor.Balema@sial.com
Impress Labs
Source:Eurekalert

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