報告題目：Building metal-organic frameworks, one cavity at a time
報 告 人：Prof. Hong-Cai Zhou
Department of Chemistry, Texas A&M University, USA
報告時間：6月14日下午15:00
報告地點：化學樓一號會議室
報告人簡介：
Prof. Hongcai Zhou is one of top chemists working in metal-organic materials. He graduated from Texas A&M University with a Ph.D. degree in 2000 (Advisor: Prof. F. A. Cotton). He then spent two years at Harvard University as a postdoctoral fellow with Prof. R. H. Holm before joining the faculty of Miami University in 2002. Prof. Zhou and his research group moved to Texas A&M University in the summer of 2008.
報告摘要:
Metal-Organic Frameworks (MOFs) have attracted worldwide research efforts because of their fascinating structures and intriguing potential applications in clean energy, especially in gas storage and carbon capture. Synthetically, a one-pot reaction between a metal salt and an organic linker has dominated the field. This approach appears simple but the reactions happened during the procedure are complicated. To study the mechanism of MOF assembly and to gain more control in MOF synthesis, we launched a cavity-by-cavity approach. In this presentation, I will start with a single cavity (the enclosure of a Metal-Organic Polyhedron or MOP), and show that the “bridging angle” of a ligand determines the geometry of the cavity. I will demonstrate that bridging-ligand substitution reaction can be generally applied in both MOP and MOF preparation. From there, I’ll show that single cavities can be assembled into chains and 2D or 3D networks of cavities either by step-wise assembly or ligand design and extension. These synthetic methods have lead to novel MOFs such as “single-molecule traps” and “elastic single-molecule traps” for carbon capture. Additionally, a biomimetic MOF that exhibits enzymatic functions will be discussed.
部分近期論文:
1、"Reversible Switching from Antiferro- to Ferromagnetic Behavior by Solvent-Mediated, Thermally-Induced Phase Transitions in a Trimorphic MOF-based Magnetic Sponge System", Mario Wriedt, Andrey A. Yakovenko, Gregory J. Halder, Andrey V. Prosvirin, Kim R. Dunbar and Hong-Cai Zhou, J. Am. Chem. Soc., 2013, 135, 4040-4050.
2、“Porous Materials with Pre-Designed Single-Molecule Traps for CO2 Selective Adsorption”, Li, J.-R.; Yu, J.; Lu, W.; Sculley, J.; Balbuena, P. B.; Zhou, H.-C., Nature Commun., 2013, 4:1538 doi: 0.1038/ncomms2552.
3、"Enhancing Amine-Supported Materials for Ambient Air Capture", Sculley, J.; Zhou, H.-C., Angew. Chem. Int. Ed., 2012, 51, 12660–12661.
4、“Introduction of Functionalized Mesopores to Metal-Organic Frameworks via Metal-Ligand-Fragment Coassembly”, Park, J.; Wang, Z.U.; Sun, L.-B.; Chen, Y.-P.; Zhou, H.-C., J. Am. Chem. Soc., 2012, 134 (49), 20110–20116.
5、“Multipoint Interactions Enhanced CO2 Uptake: A Zeolite-like Zinc–Tetrazole Framework with 24-Nuclear Zinc Cages”, Cui, P.; Ma, Y.-G.; Li,H.-H.; Zhao, B.; Li, J.-R.; Cheng,P.; Balbuena, P.; Zhou, H.-C., J. Am. Chem. Soc., 2012, 134 (46), 18892–18895.
6、“Interconversion between Discrete and a Chain of Nanocages: Self-Assembly via a Solvent-Driven, Dimension-Augmentation Strategy”, Liu, T.-F.; Chen, Y.-P.; Yakovenko, A. A.; Zhou, H.-C., J. Am. Chem. Soc., 2012, 134 (42), 17358–17361.
7、"Pore Surface Engineering with Controlled Loadings of Functional Groups via Click J.-R.; Zhou, H.-C., J. Am. Chem. Soc., 2012, 134(36), 14690-14693.
8、"Confinement of Metal-Organic Polyhedra in Silica Nanopores", Sun, L.-B.; Li, J.-R.; Lu, W.; Gu, Z.-Y.; Luo, Z.; Zhou, H.-C., J. Am. Chem. Soc., 2012, 134, 15923−15928.
9、"Zirconium-Metalloporphyrin PCN-222: Mesoporous Metal-Organic Frameworks with Ultrahigh Stability as A Biomimetic Catalyst", Feng, D.; Gu, Z.-Y.; Li, J.-R.; Jiang, H.-L.; Wei, Z.; Zhou, H.-C., Angew. Chem. Int. Ed., 2012, 51, 10307–10310.
10、"Low-Energy Selective Capture of CO2 by a Predesigned Elastic Single-Molecule Trap", Wriedt, M.; Sculley, J.; Yakovenko, A.; Ma, Y.; Halder, G.; Balbuena, P.; Zhou, H.-C., Angew. Chem. Int. Ed., 2012, 51, 9804–9808.
11、"Polyamine-Tethered Porous Polymer Networks for Carbon Dioxide Capture from Flue Gas", Lu, W.; Sculley, J.; Yuan, D.; Krishna, R.; Wei, Z.; Zhou, H.-C., Angew. Chem. Int. Ed., 2012, 51, 7480–7484.
12、"A Highly Porous and Robust (3,3,4)-Connected Metal-Organic Framework Assembled with a 90°-Bridging-Angle-Embedded Octa-carboxylate Ligand", Lu, W.; Yuan, D.; Makal, T. A.; Li, J.-R.; Zhou, H.-C., Angew. Chem. Int. Ed., 2012, 51, 1580 –1584.
13、“Reversible Alteration of CO2 Adsorption upon Photochemical or Thermal Treatment in a Metal-Organic Framework” Park, J.; Yuan, D.; Pham, K. T.; Li , J.-R.; Yakovenko, A.; Zhou, H. –C. J. Am. Chem. Soc. 2012, 134 (1), 99–102.
14、“Cooperative Template-Directed Assembly of Mesoporous Metal-Organic Frameworks” Sun, L.-B.; Li, J.-R.; Park, J.; Zhou, H.-C. J. Am. Chem. Soc. 2012, 134 (1), 126–129.
歡迎各位師生參加！
