Lecture Pantelis Trikalitis
|30 January 2009||FWN-Building 5116.0107, Nijenborgh 4, 9747 AG, Groningen|
|Speaker:||Prof. Dr. Pantelis Trikalitis|
|Affiliation:||University of Crete, Department of Chemistry, Voutes, 71003 Heraklion, Greece|
|Title:||Novel, Functionalized Metal-Organic Frameworks for Gas Storage/Separation Applications|
|Date:||Fri Jan 30, 2009|
|Telephone:||+31 50 363 4736|
Porous, metal-organic frameworks (MOFs) or coordination polymers (PCPs) represent a unique class of crystalline open framework solids with unprecedented structures, diverse chemical composition, adjustable pores sizes, large surface areas and pore volumes. The combination of accessible porosity and framework functionalities in these solids, arising from both the inorganic and organic component, results in unique properties that could lead to applications in technologically important fields including gas storage, separation and catalysis.
We will present the synthesis, characterization and gas sorption properties of novel sulfone (-SO2) functionalized MOFs using the ligand 4,4'-bibenzoic acid-2,2'-sulfone. This ligand has never been used before in the entire family of MOFs or PCPs and represents a new, rigid carboxylate-based linker, in contrast to its flexible parent 4,4'-bibenzoic acid. This ligand is capable in directing the formation of new, non-interpenetrating 3D MOFs, assembled from unprecedented SBU’s. Another unique feature found in three different 3D MOFs is that adjacent SBU’s are connected via a double rather than a single organic ligand. In addition, in one case the anionic framework is charged balanced by hydronium H3O+ cations. Very high selectivity of CO2 over CH4, H2 and N2 at 273K was observed in some of these materials and is strongly associated with the presence of sulfone groups.
|Last modified:||22 October 2012 2.30 p.m.|