INOR 392 |
| A grand challenge toward commercialization of hydrogen-fueled vehicles is to develop a practical hydrogen storage system that can store 5-10Kg of hydrogen on-board. Recently metal-organic frameworks show extraordinary hydrogen uptake only at cryogenic temperature due to weak H2 adsorption energies. A key approach to increase H2 binding energy is to introduce coordinatively-unsaturated metal centers in frameworks. We have developed highly tunable 3D metal-organic frameworks, constructed from 2D grids of meso-tetra(4¬carboxyphenyl)porphyrin (TCPP) and M2(COO)4 paddle-wheel clusters (M = 3d metals), together with organic pillars. These materials could provide open metal sites when the stacking pattern of the 2D grids is properly controlled. Furthermore, the open metal centers can be easily modified in this series while maintaining the same topology. The adsorption characteristics can be optimized when the metal in the porphyrin building block is varied systematically.
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Synthesis and Characterization of Materials
1:30 PM-5:30 PM, Monday, August 20, 2007 BCEC -- 206 A/B, Oral
Division of Inorganic Chemistry |
