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Large pores
Date:12/5/2012

This press release is available in German.

Researchers of the KIT Institute of Functional Interfaces (IFG), Jacobs University Bremen, and other institutions have developed a new method to produce metal-organic frameworks (MOFs). By means of the so-called liquid-phase epitaxy, the scientists succeeded in producing a new class of MOFs with a pore size never reached before. These frameworks open up interesting applications in medicine, optics, and photonics. The new class of MOFs, called "SURMOF 2", is presented in the "Nature Scientific Reports" journal.

Metal-organic frameworks (MOFs) can store nanoscaled objects and make them available for various applications. For this reason, they are of particular interest in many research areas, including materials sciences, biology, and medicine. MOFs are highly ordered molecular systems, consisting of metal nodes and organic rods. The pores in these frameworks are freely accessible. MOFs are used in powder form to store hydrogen and other small molecules, such as carbon dioxide or methane. For more complex applications, such as the storage and subsequent release of antibiotics, MOF coatings of higher mechanical loadability are required.

At the KIT Institute of Functional Interfaces (IFG), the team of the head of institute Professor Christof Wll is working on new methods for the production of MOFs. They make the MOF structures grow epitaxially, i.e. in layer-by-layer scheme, on the surface of substrates (SURMOFs Surface-mounted Metal-organic Frameworks). In this way, the size and shape of the pores as well as their chemical functionality can be adjusted to the planned application. A special method developed by the IFG, the so-called liquid-phase epitaxy (LPE), allows for the production of framework structures that cannot be generated by conventional wet chemical methods. Detailed theoreti
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Contact: Monika Landgraf
presse@kit.edu
49-721-608-47414
Helmholtz Association of German Research Centres
Source:Eurekalert  

Page: 1 2

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