Impact of Disordered Guest–Framework Interactions on the Crystallography of Metal–Organic Frameworks
摘要:
It is a general and common practice to carry out single crystal X-ray diffraction experiments at cryogenic temperatures in order to obtain high-resolution data. In this report, we show that this practice is not always applicable to metal organic frameworks (MOFs), especially when these structures are highly porous. Specifically, two new MOFs are reported here, MOF-1004 and MOF-1005, for which the collection of the diffraction data at lower temperature (100 K) did not give data of sufficient quality to allow structure solution. However, collection of data at higher temperature (290 K) gave atomic-resolution data for MOF-1004 and MOF-1005, allowing for structure solution. We find that this inverse behavior, contrary to normal practice, is also true for some well-established MOFs (MOF-177 and UiO-67). Close examination of the X-ray diffraction data obtained for all four of these MOFs at various temperatures led us to conclude that disordered guest framework interactions play a profound role in introducing disorder at low temperature, and the diminishing strength of these interactions at high temperatures reduces the disorder and gives high-resolution diffraction data. We believe our finding here is more widely applicable to other highly porous MOFs and crystals containing highly disordered molecules.
The invention relates to monocrystalline single crystals of metal-organic framework materials comprising at least one aluminium metal ion, processes for preparing the same, methods for employing the same, and the use thereof. The invention also relates to monocrystalline aluminium metal-organic frameworks.
POROUS CRYSTALLINE HYBRID SOLID FOR ADSORBING AND RELEASING GAS OF BIOLOGICAL INTEREST
申请人:Morris Russel
公开号:US20110052650A1
公开(公告)日:2011-03-03
The invention relates to solids made of a porous crystalline metal-organic framework (MOF) loaded with at least one gas of biological interest, and to a method for preparing the same. The MOF solids of the present invention are capable of adsorbing and releasing in a controlled manner gases having a biological interest. They can be used in the pharmaceutical field and/or for applications in the cosmetic field. They can also be used in the food industry.
[EN] Chromium Metal Organic Frameworks and Synthesis of Metal Organic Frameworks<br/>[FR] STRUCTURES ORGANOMÉTALLIQUES À BASE DE CHROME ET SYNTHÈSE DE STRUCTURES ORGANOMÉTALLIQUES
申请人:TEXAS A & M UNIV SYS
公开号:WO2015173553A1
公开(公告)日:2015-11-19
The present invention relates to monocrystalline metal organic frameworks comprising chromium ions and carboxylate ligands and the use of the same, for example their use for storing a gas. The invention also relates to methods for preparing metal organic frameworks comprising chromium, titanium or iron ions and carboxylate ligands. The methods of the invention allow such metal organic frameworks to be prepared in monocrystalline or polycrystalline forms.
[EN] ACID, SOLVENT, AND THERMAL RESISTANT METAL-ORGANIC FRAMEWORKS<br/>[FR] OSSATURES ORGANOMETALLIQUES RESISTANTES AUX ACIDES, AUX SOLVANTS ET A LA CHALEUR
申请人:UNIV CALIFORNIA
公开号:WO2015127033A1
公开(公告)日:2015-08-27
The disclosure provides for thermal, solvent, and/or acid resistant metal organic frameworks and the use of these frameworks in devices and methods for gas separation, gas storage, and catalysis. The disclosure further provides for MOFs that are strong solid acids, and the use of these strong solid acid MOFs in catalytic devices and catalytic methods.