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TU Dresden » Fakultät Mathematik und Naturwissenschaften » Fachrichtung Chemie und Lebensmittelchemie » Metal-Organic Frameworks
Overview of granted projects - Part I

Development and characterization of MOF based chromatographic materials combining size exclusion,
intrinsic chirality and specific interactions

 

        Consortium:

        Professor Dr. Florian Mertens, Freiberg
        Freiberg University of Mining and Technology
        Department of Chemistry and Physics
        Institute of Physical Chemistry

        Professor Dr. Edwin Weber, Freiberg
        Freiberg University of Mining and Technology
        Department of Chemistry and Physics
        Institute of Organic Chemistry

        Project:

        Development and characterization of MOF based chromatographic materials combining size exclusion, intrinsic chirality and specific interactions

        Abstract:

        Design and exploration of new MOF based size exclusion chromatography materials. The project aims at the utilization of the sharp pore size distribution of MOFs filling the size gap between zeolite and silica based materials. This feature in combination with the extraordinary flexibility in MOF network design, due to the variability of the organic linkers, will be used to generate, as part of the backbone, specific analyte lattice interaction environments based on geometry, adsorptive strength, and chirality. This is in contrast to existing materials, where modification are usually implemented by attaching rather spacious organic units to the material filling largely the pores and thus causing a certain division between size exclusion and adsorption chromatography. Within the project, acetylene based linkers will be used as slim but rigid structural units to form network structures with easily accessible and large pores. Besides other interactions, these linkers will also allow to address specific separation problems involving soft acids via C-H/π contacts. The acetylene group in combination with zinc carboxylate based SBUs permits to select independently the type of SBU and linker for the network formation. Chromatographic experiments will be carried out to evaluate the generated materials and to compare them to existing ones.

        Results:

        Based on special surface preparation techniques using self-assembled monolayers and the controlled SBU approach for the deposition of metal-organic frameworks, MOF coatings in capillary columns for gas chromato-graphy were produced on the basis of new and specifically synthesized linkers. The performance of these columns can compete or surpass the one of commercial products.

        Publications:

        F. Mertens
        "Determination of Absolute Adsorption in Highly Ordered Porous Media"
        Surf. Sci. 2009,603(10-12), 1979-1984
         

         

        S. Hausdorf, W. Seichter, E. Weber, and F. Mertens
        "Large Pores Generated by the Combination of Different Inorganic Units in a Zinc Hydroxide Ethynylene Diisophthalate MOF"
        Dalton Transactions 2009,1007-1013
         

         

        Steffen Hausdorf, Felix Baitalow, Tony Böhle, David Rafaja, and Florian Mertens
        "Main-Group and Transition-Element Homologues"
        J. Am. Chem. Soc. 2010, 132, 10978-10981
         

         

        Tony Böhle, Frank Eißmann, Edwin Weber , Florian Mertens
        "Poly[(µ4-2,5-dimethoxybenzene-1,4-dicarboxylato)manganese(II)] and its zinc(II) analogue: three-dimensional coordination polymers containing unusually coordinated metal centres "
        Acta Cryst. C 2010, 67(1), m5-m8
         

         

        Frank Eismann, Tony Böhle, Florian Mertens, and Ewin Weber
        "Hexakis(N,N-dimethylformamide-κO)cobalt(II)bis(perchlorate) "
        Acta Cryst. 2010, E66, m279
         

         

        S. Hausdorf, F. Mertens, F. Baitalow, J. Seidel
        "Process for the Production of Oxide-based Metal-organic Framework Materials by Inverse Synthesis "
        Ger. Offen. 2009, 8pp. DE 102008026713
         

         

        I. M. Hauptvogel, W. Seichter, E. Weber
        "Unsual Mixed Solvent Supramolecular Crystal Framework Formed of a New Tecton- like Tetracarboxylic Building Block"
        S/upramol. Chem./, 2011 in press [DOI: 10.1080/10610278.2010.527979]
         

         

        T. Böhle, F. Eißmann, E. Weber, F. Mertens
        "A Three-Dimensional Coordination Polymer Based on Co(II) and 2,5- Dimethoxyterephthalate Featuring MOF-69 Topology"
        Struct. Chem. Commun., /submitted
 
 

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