92 results about "Bisbenzimidazole" patented technology

The invention discloses a method for preparing a phosphate-doped polybenzimidazole membrane electrode for a fuel cell. On the one hand, 4,4'-oxybis(benzoic acid) and 3,3',4,4'-biphenyltetramine serve as monomers to prepare poly[2,2'-(p-oxy- diphenylene)-5-5'-bisbenzimidazole], the poly[2,2'-(p-oxy-diphenylene)-5-5'-bisbenzimidazole] is cast to form a membrane, and the membrane is doped with phosphate to prepare an electrolyte membrane with good mechanical strength; on the other hand, in the process of preparing a phosphate-doped gas diffusion electrode, poly-[2,2'-(m-phenylene)-5,5'-bisbenzimidazole] is prepared into the gas diffusion electrode in the presence of a platinum / carbon catalyst, the gas diffusion electrode is doped with phosphate, the components are uniformly distributed, strong-volatility acid is not used in the process, and a process of mixing solid materials does not exist. The membrane electrode prepared by the method can be used for hydrogen-oxygen fuel cell power generation under the conditions that the temperature is higher than 100 DEG C and the humidification is not carried out. The open-circuit voltage is 0.845V, and the maximum power density is 191mW / cm<2> (560mA / cm<2>, 0.34V) under the conditions that the temperature of the fuel cell is 150DEG C and the humidification is not carried out. The preparation method has the advantages of controllable conditions in the technological process and good repeatability of the process.

The invention discloses ring metal iridium photosensitizers, synthesis thereof and application thereof. The synthesis of the iridium photosensitizers comprises: placing chlorine-bridge dipolymer [Ir(tfmppy)(mu-Cl)]2 and bis(benzimidazole) into a mixed solvent of methanol and dichloromethane, and then adding Na2CO3 for reflux reaction; after the reaction, cooling, drying the solvent by rotary evaporation, then obtaining a target product through column chromatography. The column chromatography developing agent is a mixture of ethyl acetate and hexane, and the ratio of the ethyl acetate to the hexane is between 1:1 and pure ethyl acetate. Through use of the synthesis method, single-core and dual-core iridium photosensitizers can be simultaneously obtained, and post-treatment is simple, and the pure product can be obtained through simple column chromatography method. Compared with hydrogen preparation by photocatalytic reduction of water with a conventional single-core iridium photosensitizer, the single-core iridium photosensitizer of the invention has good performance of hydrogen preparation by photocatalytic reduction of water, and the dual-core iridium photosensitizer is more active than the single-core iridium photosensitizer.

The invention provides a terphenyl bridged double-benzimidazoles compound as well as a synthesis method and application thereof. The invention takes cyanophoric phenyloboricacid and aromatic dibromide (such as 1,4-dibromo-benzene, 2-fluorine-1, 4-dibromo-benzene, 2,5-dibromo-toluene) as raw materials; under the catalysis of organic palladium and inorganic base, a series of terphenyl compounds with di-cyan can be synthesized by the Suzuki coupling reaction; and then a series of terphenyl bridged double-benzimidazoles compounds can be obtained by adding 1 time of di-cyano-terphenyl compounds and 2-2.4 times of o-phenylenediamine compounds, taking polyphosphoric acid as the catalyst and carrying out the condensation reaction for 6-24 hours under 180-240 degrees C.. The compound can be applied to the fields such as light emitting devices, photovoltaic cells, organic light-emitting diodes and the like as the organic blue-light material or the electron transport material.

The invention discloses a zinc metal organic framework material. A molecular formula of a porous material is C28H17N505Zn, a crystal system is homocline, a space group is P21 / c, and cell parameters are shown in the description, wherein alpha is equal to 90 degrees, beta is equal to 104.1960(10) degrees, gamma is equal to 90 degrees, and the number of molecules in a unit cell is two; and a chemical general formula of the porous material is Zn(phenDIB)L0.5, wherein L is azoxybenzene-3,3',5,5'-tetracarboxylic acid, and phenDIB is 1,4-bisbenzimidazole-benzene; and the material is a porous material with high stability, has apparent absorption effect for cationic dye such as methylene blue, rhodamine B, and can realize the selective absorption separation for the cationic dye from different types of mixed dye containing the cationic dye, the absorbed separated dye can also be desorbed and recycled and can be used as an environment-friendly absorption material, the zinc metal organic framework material can be prepared by adopting a simple solvent thermal method, and the application prospect is good.

A compound or its salt, their preparations and uses in treatment of PPAR gamma acceptor related diseases are disclosed. The compound is selective PPAR gamma agonist and has specific excitation activity. It can be used to treat diabetes mellitus or metabolic syndrome.

The invention discloses a 2,3-double benzimidazole pyridine cobalt (II) coordination compound. The crystal structure of the compound belongs to a triclinic system, the space group of the compound is P1, and the molecular formula is C[38]H[24]CoN[10]. Co (II) atoms are penta-coordinated. The invention further discloses the application of the 2,3-double benzimidazole pyridine cobalt (II) coordination compound in pharmacy. The 2,3-double benzimidazole pyridine cobalt (II) coordination compound can restrain the growth of human hepatoma carcinoma cells Hep-G2, induce the apoptosis of the human hepatoma carcinoma cells Hep-G2, preventing the human hepatoma carcinoma cells Hep-G2 from being in the G2 phase and affect on DNA in a non-classical insertion mode.