Abstract:
There is provided a process for preparing a zirconium-based metal organic framework (Zr-MOF), comprising the steps: (i) mixing a Zr-MOF having fcu topology with aqueous solvent, wherein said Zr-MOF comprises n linkers L1 and 12-n linkers L2; (ii) isolating a Zr-MOF having bcu topology from the mixture in step (i), wherein said Zr-MOF having bcu topology comprises n-4 linkers L1 and 12-n linkers L2; and (iii) preparing a reaction mixture comprising the Zr-MOF having bcu topology and either linker L2 or linker L3 in a solvent; wherein linkers L1, L2 and L3 are a first, second and third linker which are all different and n is 4, 8 or 12. There is further provided a process for the preparation of a Zr-MOF having fcu topology comprising the steps: (i) mixing a Zr-MOF having bcu topology with an alkali metal salt in a solvent, wherein said Zr-MOF comprises 8 linkers L1 and at least one charge balancing anion coordinated to the Zr cluster; (ii) isolating a Zr- MOF having bcu topology from the mixture in step (i), wherein said Zr-MOF having bcu topology does not comprise any charge balancing anions coordinated to the Zr cluster; and (iii) preparing a reaction mixture comprising the Zr-MOF having bcu topology from step (ii) and either linker L1 or linker L2 in a solvent; wherein linkers L1 and L2 are a first and second linker which are different.
Abstract:
Metal-organic framework compounds (MOFs) coordinated to carbon-containing ligands, such as carboxylate ligands and phosphonate ligands, are provided. Also provided are methods for making the ligand-coordinated MOFs and methods for using the ligand-coordinated MOFs in carbon dioxide sequestration.
Abstract:
Methods for generating a purified catalyst are provided. The method includes performing a reaction in a reaction vessel to generate a liquid catalyst and reaction products, purging the reaction products using an inert gas to form a purged catalyst, freezing the purged catalyst in the reaction vessel, and applying a vacuum to the reaction vessel while the purged catalyst thaws, wherein the vacuum removes residual reaction products to form a purified catalyst. Systems for generating a purified catalyst and a purified catalyst are also provided.
Abstract:
본 발명은, 금속전구체, 수용성 첨가제 및 물 또는 물-함유 유기용매를 포함하는 반응혼합물을 30℃ 내지 150℃ 사이의 겔화온도에서 겔화시켜 2 내지 50,000 (cps)의 점도를 갖는 유기겔-함유 용액을 수득하고, 이어서 교반하에 상기 겔화온도에서 숙성시키고, 계속해서 유기겔-함유 용액을 상기 겔화온도 내지 250℃ 사이의 온도에서 가열하여 결정화시키는 것을 특징으로 하는, 다공성 유무기 혼성체의 제조방법에 관한 것이다. 본 발명의 제조방법에 따르면, 반응을 물 또는 물-함유 유기용매 중에서 환류조건하에 주위 압력 또는 약간 가압된 압력에서 수행할 수 있으므로 상업적으로 실시할 수 있을 뿐만 아니라, 반응을 1:1 ~ 30:1의 용매 대 금속의 높은 몰비에서도 결정성 및 표면적이 높은 다공성 유무기 혼성체를 적어도 20 kg/m 3. day 의 공시간 수율로 대량생산할 수 있게 해준다.
Abstract:
Novel cyclic amides containing tin or lead are disclosed. These cyclic amides can be used for atomic layer deposition or chemical vapor deposition of tin or lead as well as their oxides, sulfides, selenides, nitrides, phosphides, carbides, silicides or borides or other compounds. Tin(TV) oxide, SnO 2 , films were deposited by reaction of a cyclic tin amide/vapor and H 2 O 2 or NO 2 as oxygen sources. The films have high purity, smoothness, transparency, electrical conductivity, density, and uniform thickness even inside very narrow holes or trenches. Deposition temperatures are low enough for thermally sensitive substrates such as plastics. Suitable applications of these films include displays, light-emitting diodes, solar cells and gas sensors. Doping SnO 2 with aluminum was used to reduce its conductivity, making material suitable as the active semiconductor layer in electron multipliers or transparent transistors. Deposition Using the same tin precursor and H 2 S deposited tin monosulfide, SnS, a material suitable for solar cells. The figure shows the preferred tin compound.
Abstract:
This invention relates to Group 4 dialkyl compounds supported by a pyridyl-amido-aryl ("PAA"), an anisole-amido-aryl ("AAA"), a phenoxy-amido-pyridyl ("PAPY"), an anisole- amido-phenoxy ("AAP") or a anisole-amido-phenoxy ("AAP") tridentate ligand. Such compounds can polymerize olefins, such as ethylene.
Abstract:
This application relates to metal-containing coordination polymers having high birefringent values. For example, polymers having birefringent values within the range of 0.07 to 0.45 are described. The polymers may comprise units having the formula M(L) X [M'(Z) Y ] N , wherein M and M' are the same or different metals capable of forming a coordinate complex with the Z moiety; L is a ligand; Z is selected from the group consisting of halides, pseudohalides, thiolates, alkoxides and amides; X is between 0 - 12; Y is between 2 - 9; and N is between 1 - 5. In particular embodiments of the invention L may be a highly anisotropic organic ligand, such as terpyridine, and Z may be a pseudohalide, such as CN. The invention also includes methods for synthesizing the coordination polymers and use of the polymers in birefringent materials and devices. In one embodiment the polymers may be processible into thin films.
Abstract:
Water soluble tin mesoporphyrin compounds are described. Methods of preparation of water soluble metal mesoporphyrin compounds and pharmaceutical preparations are also described.