Navigation Links
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.

Current routes to MOF materials typically rely on solution-based processes in which the organic linker and the metal source a metal salt, carbonate or oxide are partially or fully dissolved in an appropriate solvent and reacted. The reaction can occur in a tightly closed vessel at high temperature or by subjecting the solution to microwaves, ultrasound or electrochemical treatment. Metal-organic framework materials can also be prepared by milling solid-phase metal derivatives and solid-phase organic linkers in the presence of a liquid, which can be included as an additive with the initial solid-phase reaction mixture or generated in situ as a byproduct during the milling process. Although often asserted to be "solid-state," such processes necessarily involve liquid components, which can act as liquid micro-reactors that control the reaction process and promote the formation of MOFs by the conventional solution-based mechanism.

Until the discovery, it was uncertain whether MOF materials could be prepared in a completely liquid-free environment and whether new types of MOF materials and MOF materials of the purity required for many high-tech applications could be prepared in a cost-effective process.

"Excluding liquids from the preparation finally opens the way to making MOF materials whose properties are not influenced by the presence of contaminants and, therefore, may be quite different from those of conventional MOFs. Our approach also avoids the use of solvents, which are often harmful to the environment, difficult to remove from the extended 3D networks of the targeted MOF product materials, and detrimental to the performance of MOF materials in many applications." said Dr. Viktor Balema, Manager of the Aldrich Hard Materials Center of Excellence. Dr. Balema further noted that "Aldrich's process should enable generation of unique hybrid structures with non-conventional properties applicable in numerous areas of modern science and technology, which extend from energy generation and storage to electronics and bio-technology."

Prior to journal publication, Aldrich Materials Science filed a provisional patent application for the newly discovered procedure with the US Patent Office. "This discovery exemplifies the work being done at the Hard Materials Center of Excellence. Through this Center along with the Polymer Center of Excellence, we seek to enable innovation through new product additions to our materials portfolio, collaborations, technology licensing, custom research, process development and scale-up," commented Dr. Shashi Jasty, Director, Aldrich Materials Science.


'/>"/>

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

Related medicine news :

1. A TECNALIA study reveals the loss of nanomaterials in surface treatments caused by water
2. Power generation technology based on piezoelectric nanocomposite materials developed by KAIST
3. No Added Cancer Risk From Hip Replacement Materials: Study
4. Life Sciences Discovery Fund makes grants to commercialize health-related technologies
5. Norwegian scientists win Perl-UNC Neuroscience Prize
6. Allen Kesselring, Ph.D. of EAG Life Sciences Featured in Special Report on Extractables and Leachables
7. Citizen science more than a century later: Ordinary people go online to track Gulf oil spill
8. Crowdsourcing site compiles new sign language for math and science
9. American Society of Clinical Oncology issues annual report on state of clinical cancer science
10. Collegiate inventors honored for innovative science and technology advances
11. Elsevier launches new journal: Health Care: The Journal of Delivery Science and Innovation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/25/2017)... VA (PRWEB) , ... September 25, 2017 , ... ... Trump, **An FDAnews Webinar**, Oct. 12, 2017 — 1:30 p.m. – 3:00 p.m. ... to a running start. Just look what’s happened in four short months:, ...
(Date:9/25/2017)... Bessemer, AL (PRWEB) , ... September 25, 2017 , ... ... services to communities in the central Alabama region, is organizing a local charity drive ... Harvey. , More than 11 trillion gallons of water have fallen on Houston as ...
(Date:9/25/2017)... ... September 25, 2017 , ... ... launch of its new website. No need to be concerned about garment ... Go to welldonedesigns.com where all orders are printed and shipped within 5-10 days. ...
(Date:9/25/2017)... ... September 25, 2017 , ... Catalent Pharma ... drugs, biologics and consumer health products, today announced that two of its leading ... bioassays at two upcoming conferences. , At the BEBPA 10th Annual Bioassay Conference, ...
(Date:9/25/2017)... ... September 25, 2017 , ... NCPDP Foundation , ... it has awarded a $40,000 grant to Johns Hopkins Medicine to address patient ... enables prescribers to electronically cancel a prescription already submitted to a pharmacy. Studies ...
Breaking Medicine News(10 mins):
(Date:9/6/2017)... Sept. 6, 2017  Medical professionals are ... skills while treating their patients. Medical simulations ... without involving patients. Simulation provides a safe ... carry out procedures, refine techniques and build ... of new technology, such as augmented reality, ...
(Date:9/6/2017)... 2017 Eli Lilly and Company (NYSE: ... data for galcanezumab and lasmiditan, two investigational treatments for ... Society (IHC) taking place Sept. 7-10 in ... new, long-term data from an open-label study evaluating the ... mg and 240 mg) for the prevention of migraine. ...
(Date:9/5/2017)... WAYNE, N.J. , Sept. 5, 2017 /PRNewswire/ ... technology, has created a vibrant charitable donation program ... funds and support congenital heart defect research by ... healthcare providers and the general public are encouraged ... and submit the completed artwork to the ...
Breaking Medicine Technology: