25 results about "Pyridinium Compounds" patented technology

The invention relates to the technical field of solar cells, in particular to a pyridinium compound doped perovskite solar cell and a preparation method thereof, a perovskite layer of the cell comprises Pb < 2 + > and a pyridinium compound doped in the perovskite layer, and the molar ratio of the pyridinium compound to the Pb < 2 + > is 1: 500-3: 250. By doping the pyridinium compound and Pb < 2 + >, the perovskite solar cell constructs a four-dimensional synergistic interaction mechanism of defect passivation, ultraviolet protection, energy conversion optimization and environmental protection. The M molecule not only solves the key problem that the perovskite material is easy to be damaged by ultraviolet and influenced by surface defects, but also provides a new solution for improving the comprehensive performance of the solar cell by improving the light utilization rate and the environmental tolerance. The preparation method of the M-doped perovskite solar cell provided by the invention is simple in process, easy to operate and beneficial to large-scale production.

The disclosure relates to oral care compositions comprising guanidine in free or orally acceptable salt form, a cationic quaternary ammonium compound (e.g., a pyridinium compound) (e.g., cetyl pyridinium chloride (CPC)), a fluoride source, and optionally a zinc source (e.g., zinc lactate or zinc citrate and zinc oxide) as well as to methods of using and of making these compositions.

The disclosure relates to oral care compositions comprising guanidine in free or orally acceptable salt form, a cationic quaternary ammonium compound (e.g., a pyridinium compound) (e.g., cetyl pyridinium chloride (CPC)), a fluoride source, and optionally a zinc source (e.g., zinc lactate or zinc citrate and zinc oxide) as well as to methods of using and of making these compositions. 20 25 20 43 72 12 J un 2 02 5 2 0 2 5 2 0 4 3 7 2 1 2 J u n 2 0 2 5 A B S T R A C T T h e d i s c l o s u r e r e l a t e s t o o r a l c a r e c o m p o s i t i o n s c o m p r i s i n g g u a n i d i n e i n f r e e o r o r a l l y a c c e p t a b l e s a l t f o r m , a c a t i o n i c q u a t e r n a r y a m m o n i u m c o m p o u n d ( e . g . , a p y r i d i n i u m c o m p o u n d ) ( e . g . , c e t y l p y r i d i n i u m c h l o r i d e ( C P C ) ) , a f l u o r i d e s o u r c e , a n d o p t i o n a l l y a z i n c s o u r c e ( e . g . , z i n c l a c t a t e o r z i n c c i t r a t e a n d z i n c o x i d e ) a s w e l l a s t o m e t h o d s o f u s i n g a n d o f m a k i n g t h e s e c o m p o s i t i o n s . 2 0 2 5 2 0 4 3 7 2 1 2 J u n 2 0 2 5

The present invention relates to the use of a compound as a collector for the selective flotation of lithium minerals, characterized in that the compound is represented by the formula (1): AB (1); wherein A is a) an aromatic group substituted by one or more OH and / or SH groups, or b) an aromatic group attached to B via a methylene group of the formula -[CH2]- or a methylene carbanion group of the formula -[CH -]-; wherein B is i) a pyridinium or benzoannelated pyridinium compound, wherein A is bonded to the nitrogen atom of the pyridinium or benzoannelated pyridinium compound, or ii) a substituted or unsubstituted pyridyl or benzoannelated pyridyl group; wherein the selective flotation of lithium minerals is carried out using a conditioning time CT ≥ 3 min, preferably > 5 min, more preferably > 10 min, and / or wherein the selective flotation of lithium minerals is carried out at a temperature ≤ 10°C or ≥ 25°C, preferably ≤ 5°C or ≥ 40°C. The present invention further relates to a flotation composition comprising said compound as a collector and a flotation process using said compound as a collector.

A fixed bed (10) is provided for a fixed-bed reactor (100). The fixed bed (10) contains a particulate carrier and at least one reactive substance. The carrier is a silicate compound and the reactive substance is an organometallic pyridine compound. A method for preparing such a fixed bed is provided. The method includes the steps of preparing the carrier, preparing an impregnation and treating the carrier with the impregnation. In addition, a gas-measuring tube is provided with a correspondingly prepared fixed bed as well. A method uses organometallic pyridinium compounds, especially pyridinium dichromate, in a fixed-bed reactor for detecting alcohol compounds and for preparing formaldehyde and / or acetaldehyde.

A synthesis of bis-oxime heterocycles via reaction of 2,4-dimethyl pyridine or 2,4-dimethylpyrimidine in the presence of a phase transfer catalyst. Such bis-oxime heterocycles provide a more direct route to the synthesis of bis-quaternary pyridinium compounds and their analogues as nerve agent antidotes.

Various zeolites may be produced under hydrothermal synthesis conditions in the presence of a silicon atom source and a bis-pyridinium compound having a structure represented by formula (I). Q is an optionally substituted C1-C10 hydrocarbyl group and two Q may join to form a carbocyclic ring; n is an integer ranging from 0 to 5; m is an integer ranging from 0 to 5; n+m is greater than or equal to 1; and A is a spacer group containing 2 to about 10 atoms.

Provided are a heteroaryl-pyridinium compound and a redox flow battery including the same. The redox flow battery includes a positive electrode cell including a positive electrode and a posolyte solution; a negative electrode cell including a negative electrode and a negolyte solution; and a separator disposed between the positive electrode cell and the negative electrode cell. The negolyte solution is the electrolyte solution for a redox flow battery.

The present invention relates to the technical field of solar cells, and in particular to a perovskite solar cell doped with pyridinium compounds and a preparation method thereof. The perovskite layer of the cell comprises Pb doped therein. 2+ and pyridinium compounds, pyridinium compounds and Pb 2+ The molar ratio is 1:500 to 3:250. By doping pyridinium compounds and Pb 2+ Perovskite solar cells establish a four-dimensional synergistic mechanism for defect passivation, UV protection, energy conversion optimization, and environmental protection. The M molecule not only addresses the key issue of perovskite materials being susceptible to UV damage and surface defects, but also provides a new solution for improving the overall performance of solar cells by increasing light utilization and environmental tolerance. The method for preparing M-doped perovskite solar cells provided by the present invention is simple, easy to operate, and conducive to large-scale production.

The present invention provides methods of preparing pyrimidine cyclohexyl glucocorticoid receptor modulators, methods of preparing intermediates of pyrimidine cyclohexyl glucocorticoid receptor modulators, and pyridinium compounds.

A series of pyridinium compounds have a low reduction potential and a highly persistent radical state are generally 2,6-dialkyl-4-arylpyridinum compounds and are utilized as anolytes in redox flow, thin-film metal-organic hybrid and all-organic batteries. Associated routes for synthesizing these pyridinium compounds from pyrylium intermediates are also disclosed.

The application discloses application of methylated gossypol in preparation of a coronavirus inhibitor. The application provides application of at least one of a compound as shown in a formula I, a solvate of the compound, a pharmaceutically acceptable salt of the compound, a solvate of the pharmaceutically acceptable salt of the compound in preparation of the coronavirus inhibitor. The compound provided by the application has the advantages of clear target, high safety, significantly improved inhibitory activity, potential for wide application and potential therapeutic effect on diseases caused by the novel coronavirus.

A synthesis of bis-oxime heterocycles via reaction of 2,4-dimethyl pyridine or 2,4-dimethylpyrimidine in the presence of a phase transfer catalyst. Such bis-oxime heterocycles provide a more direct route to the synthesis of bis-quaternary pyridinium compounds and their analogs as nerve agent antidotes.

A series of pyridinium compounds having a low reduction potential and a highly persistent radical state are utilized as anolytes in redox flow, thin-film metal-organic hybrid and all-organic batteries.

The invention provides a method for preparing a pyrimidine cyclohexyl glucocorticoid receptor modulator, a method for preparing an intermediate of the pyrimidine cyclohexyl glucocorticoid receptor modulator and a pyridinium compound.

The present invention provides novel mito-pyridinium compounds, prodrugs and the uses thereof for the treatment of cancer, particularly drug resistant cancer.

A pyridinium compound represented by the following general formula (1), (2) or (3):wherein X11, X21 and X31 each represent a halogen atom being bonded to a carbon atom at position 2, 4 or 6 of the pyridine ring; R11 is an alkylene group having 1 to 24 carbons and which may contain a heteroatom; Z21 is a group selected from —COO—R22, —CONH—R23 and —CON(R24)(R25), Z21 being bonded to a carbon atom of the pyridine ring different from the carbon atom to which X21 is bonded; R21 is an alkyl group having 3 to 24 carbons and which may contain a heteroatom; R22, R23, R24 and R25 each represent an alkyl group with 3 or more carbons which may contain a heteroatom; R31 is a branched alkyl group having 10 to 24 carbons and which may contain a heteroatom; and A21− and A31− each represent an anion.

The present invention provides methods of preparing pyrimidine cyclohexyl glucocorticoid receptor modulators, methods of preparing intermediates of pyrimidine cyclohexyl glucocorticoid receptor modulators, and pyridinium compounds.

A series of pyridinium compounds, generally 2,6-dialkyl-4-arylpyridinum compounds, with low reduction potentials and highly persistent radical states for use as anolytes in redox flow batteries, thin-film metal-organic hybrid batteries, and all-organic batteries are disclosed. Related routes for the synthesis of the pyridinium compounds from pyrylium intermediates are also disclosed.

The present invention provides methods of preparing pyrimidine cyclohexyl glucocorticoid receptor modulators, methods of preparing intermediates of pyrimidine cyclohexyl glucocorticoid receptor modulators, and pyridinium compounds.

The present invention is a novel pyridinium compound represented by the following general formula (1), (2) or (3): wherein X11, X21 and X31 each represent a halogen atom, X11 X21 and X31 each being bonded to a carbon atom at position 2, 4 or 6 of the pyridine ring, R11 is an alkylene group with 1 or more and 24 or less carbons which may contain a heteroatom, Z21 is a group selected from -COO-R22, -CONH-R23 and -CON(R24)(R25), Z21 being bonded to a carbon atom of the pyridine ring different from the carbon atom to which X21 is bonded, R21 is an alkyl group with 3 or more and 24 or less carbons which may contain a heteroatom, R22, R23, R24 and R25 each represent an alkyl group with 3 or more carbons which may contain a heteroatom, R31 is a branched alkyl group with 10 or more and 24 or less carbons which may contain a heteroatom, and A21- and A31- each represent an anion.

The present application belongs to the technical field of electroplating nickel-phosphorus alloy, and particularly relates to a positive and reverse pulse electrolytic nickel-phosphorus alloy solution, a preparation method, an electroplating method and a nickel-phosphorus alloy coating. The nickel-phosphorus alloy solution comprises 20-500 g / L of nickel salt, 30-300 g / L of phosphorous acid compound, 5-30 g / L of boric acid, 0.5-50 g / L of organic acid and 0.2-35 g / L of pyridinium compound. The present application adopts a positive and reverse pulse cyclic electroplating method, can obtain a nickel-phosphorus alloy electroplating product with uniform coating distribution, saves the amount of nickel-phosphorus alloy used for each plating piece, reduces the production cost, improves the product quality, and can meet the trend of high-end development of electroplating manufacturing nickel-phosphorus alloy coating in the field of electronic product manufacturing.

The invention discloses a nitro reduction reaction based on liquid drop acceleration. According to the invention, the liquid drop chemistry is proposed for the first time to accelerate the reduction of nitryl to amido, and mild and efficient synthesis of organic amine compounds, especially aromatic amines such as paracetamol and the like can be realized; moreover, on the basis of a cascade reaction of liquid drop accelerated nitro reduction and Cartesian condensation, the invention also provides an on-line derivative nitro compound to be an ionic pyridinium compound, so that high-sensitivity detection of the nitro compound by the atmospheric pressure mass spectrum is realized, and the bottleneck that the nitro compound cannot be measured by the atmospheric pressure mass spectrum is solved; the method provided by the invention not only provides an efficient and green methodology for synthesis of organic amine drugs, but also provides a method support for high-sensitivity mass spectrum determination of nitro compounds in various samples.

A photoelectric conversion element includes a first electrode, a photoelectric conversion layer, where the photoelectric conversion layer has a perovskite structure, a hole-transporting layer, a second electrode, and a film including a compound represented by General Formula (2) disposed between the photoelectric conversion layer and the hole-transporting layer. In General Formula (2), A is a cationic amino compound represented by General Formula (6) or General Formula (7), a cationic pyridinium compound, a cationic imidazolinium compound, or a cationic pyrrolidinium compound. In General Formula (6), R1 is —H, —F, —CF3, or —OCH3, n is 1 or 2, and X is Br or I. In General Formula (7), n is an integer of 5 or greater but 12 or less, and X is Br or I.

Pyridinium antioxidant compounds that react with reactive oxygen species ("ROS") are disclosed, as are methods of their use. The pyridinium group has either a primary amide at the 3 position and a substitution at the 4 position; or non-primary amide at the 3 position, and optionally a substitution at the 4 position. The antioxidant compound does not produce 4-methyl pyridone, which is an undesirable side-product of some pyridinium compounds.