25 results about "Palladium atom" patented technology

The invention relates to organic electroluminescent materials and devices. An organometallic compound is provided comprising a platinum or palladium atom as a central metal atom coordinated by a tetradentate ligand. Formulations comprising these organometallic compounds are also provided. Further provided are organic light emitting devices (OLED) and related consumer products utilizing these organometallic compounds.

Provided are organometallic compounds comprising as a central metal atom either a platinum or a palladium atom which is coordinated by a tetradentate ligand. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

Provided are organometallic compounds comprising as a central metal atom a platinum or palladium atom which is coordinated by a tetradentate ligand comprising at least two 5-10-membered rings which are coordinated to the central metal atom. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

The invention relates to organic electroluminescent materials and devices. The present application provides organometallic compounds comprising a platinum atom or a palladium atom as a central metal atom coordinated to a tetradentate ligand comprising at least two 6-membered aromatic rings linked via a nitrogen atom. Formulations comprising these organometallic compounds are also provided. Organic light emitting devices (OLED) and related consumer products utilizing these organometallic compounds are also provided.

Provided are organometallic compounds comprising a platinum or palladium atom as a central metal atom which is coordinated by a tetradentate ligand comprising at least five 5- to 10-membered rings of which on is a 6-membered aromatic nitrogen-containing ring. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

This invention discloses a supported boron-doped palladium oxide cluster catalyst, its preparation method, and its application. The preparation method includes optimizing the geometry and electronic structure of the Pd clusters through Pd precursor regulation and B atom doping. The B-doped Pd oxide cluster material substrate is carbon nitride, the Pd cluster loading is 0.5-2%, and B atoms are distributed in the Pd clusters. The molar ratio of B to Pd atoms is 0.01-0.2:1, and the average valence of Pd atoms is Pd₂. 1+ -Pd 4+ This catalyst can efficiently mineralize perfluorooctanoic acid and other carboxylic acid perfluorinated compounds in water through a chain reaction of decarboxylation coupled with hydroxylation and defluorination under normal temperature and pressure. The defluorination rate exceeds 95%, and its activity is not affected by environmental factors such as ions, dissolved organic matter, and pH in the water. The catalyst is suitable for the removal of perfluorocarboxylic acids from surface water, groundwater, or industrial wastewater, and has the advantages of simple operation, high efficiency, and good stability.

Provided are organometallic compounds comprising a platinum or palladium atom as the central metal atom which is coordinated by an at least tetradentate ligand. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

The invention discloses an ultra-sensitive aerogel type hydrogen sensor material and a preparation method thereof, and relates to the technical field of gas sensors. A preparation method of an ultra-sensitive aerogel type hydrogen sensor material comprises the following steps: S1, reducing divalent palladium ions in a solution into palladium atoms to prepare a palladium precursor solution; s2, mixing the palladium precursor solution with a divalent zinc ion precursor and a trivalent indium ion precursor, adding a template agent and a coagulant, and carrying out sol reaction to form palladium modified zinc oxide / indium oxide composite sol; s3, the obtained sol is subjected to standing forming, and gel is obtained; s4, performing aging and solvent replacement treatment on the gel, and further performing supercritical carbon dioxide drying to obtain an aerogel material; s5, the palladium modified zinc oxide / indium oxide aerogel material is subjected to high-temperature annealing, the structure has a large specific surface area and rich active sites, hydrogen molecules can be effectively adsorbed, and the response speed and sensitivity of the sensor to hydrogen are improved.

The application discloses a kind of high-activity bifunctional catalytic materials and preparation method and application, preparation method includes: aluminum nitrate is dissolved in water with urea, add ethanol and surfactant, carry out crystallization after first calcination, obtain first calcination powder;First calcination powder is added to ammonium metatungstate solution, after mixing evenly, rotary evaporation is obtained solid, the solid is second calcined, obtain final powder;Final powder is evenly added to water, after loading with palladium salt solution, three times calcination is carried out, and high-activity bifunctional catalytic material is obtained.The high-activity bifunctional catalytic material of palladium-atomic dispersion tungsten oxide-double active site is constructed by two-step method in the application, the problem that pure palladium catalyst cannot be deeply mineralized methyl ethyl ketone at low temperature is solved.The palladium-tungsten synergistic effect of the prepared high-activity bifunctional catalytic material makes it have excellent methyl ethyl ketone low-temperature deep oxidation activity and reaction stability.

Provided are organometallic compounds comprising as a central metal atom a platinum or palladium atom, wherein the central metal atom is coordinated by an at least tetradentate ligand. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

The invention relates to organic electroluminescent materials and devices. An organometallic compound comprising a platinum atom or a palladium atom as a central metal atom is coordinated by a tetradentate ligand comprising at least four aromatic 6-membered rings and at least one nitrogen-containing 5-membered ring. Formulations comprising these organometallic compounds are also provided. Organic light emitting devices (OLED) and related consumer products utilizing these organometallic compounds are also provided.

A hydrogen-permeable membrane according to the present invention is composed of a PdCu-based alloy. The PdCu-based alloy is composed of 47.0-49.0 atom% of Pd, 0.001-0.15 atom% of an interstitial element EI, and 0.01-1.0 atom% of a substitutional element ES, where the balance is Cu and unavoidable impurities. The PdCu-based alloy contains, as the interstitial element EI, at least one element from among B, C, and N, and contains, as the substitutional element ES, a metal element necessarily including at least one of Ag, Au, and Al. The hydrogen-permeable membrane according to the present invention has improved hydrogen permeability in a low-temperature region of 200℃ or lower. Specifically, in the hydrogen-permeable membrane, the ratio (φ100 / φ300) between the hydrogen permeation coefficient φ100 at 100°C and the hydrogen permeation coefficient φ300 at 300°C is 0.4 or greater.

The invention relates to organic electroluminescent materials and devices. Organometallic compounds comprising a platinum or palladium atom as a central metal atom are provided, wherein the central metal atom is coordinated by an at least tetradentate ligand. Formulations comprising these organometallic compounds are also provided. Organic light emitting devices (OLED) and related consumer products utilizing these organometallic compounds are also provided.

The invention belongs to the technical field of homogeneous catalysis, and particularly relates to a novel method for catalyzing ethylene hydromethyl esterification through Bronsted acidic ionic liquid composite metal Lewis acid and palladium. Aiming at the problem that a palladium-based homogeneous catalyst is easy to gather and inactivate, an effective strategy for synergistically stabilizing palladium by using the Bronsted acidic ionic liquid and the metal Lewis acid is provided, the stability of the catalyst is remarkably improved while the high activity and the selectivity are maintained, the stabilization time is 124 hours, the TOF value reaches 29464 h <-1 >, and the selectivity is greater than 99%. The Bronsted acidic ionic liquid provides H < + > for the reaction, promotes rapid generation of Pd-H active species, and acts with a palladium intermediate to prevent aggregation of the Pd-H active species; the metal Lewis acid provides H < + > by accelerating methanol alcoholysis, regeneration of Pd-H active species is promoted, meanwhile, palladium atoms can be separated through coordination of metal ions and Pd, and the self-polymerization probability is reduced. The two synergistically improve catalytic activity and stability. The method is mild in reaction condition, the atom utilization rate reaches 100%, high catalytic activity and selectivity are achieved, the stability of the palladium complex can be remarkably improved, and the application prospect in the hydromethyl esterification reaction is good.

This application relates to organic electroluminescent materials and devices. Organic metal compounds comprising a platinum or palladium atom as a central metal atom, which is coordinated to a tetradentate ligand comprising at least one imidazole ring fused to a 6-membered aromatic ring, are provided. Formulations comprising these organic metal compounds are also provided. In addition, organic light emitting devices (OLEDs) using these organic metal compounds and related consumer products are provided.

Provided are organometallic compounds comprising as the central metal atom a platinum or palladium atom which is coordinated by a tetradentate ligand comprising at least two 6-membered aromatic rings which are connected via an nitrogen atom. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organometallic compounds.

The invention relates to an electrogenerated chemiluminescence sensor based on a single palladium atom nano enzyme and application of the sensor, belonging to the technical field of biosensors. The preparation method comprises the following steps: constructing an electrochemiluminescence (ECL) sensor with aptamer functionalized magnetic bead capture, CRISPR / Cas12a cascade signal amplification and single palladium atom nano enzyme catalysis, forming double chains by a biotin-modified EpCAM aptamer (AptEpCAM) and an activation chain S2, and fixing the double chains on the surface of a magnetic bead under the action of biotin-streptavidin to obtain the aptamer functionalized magnetic bead SMB-AptEpCAM / S2. The AptEpCAM specifically recognizes EpCAM on the surfaces of the CTCs and triggers a strand displacement reaction to release an activated strand S2, so that conversion from a protein signal (CTCs) to a nucleic acid signal (S2) is realized; the CTCs are enriched through magnetic separation, and background interference is reduced.

The present application belongs to the technical field of nanometer material preparation, and particularly relates to a single-palladium-atom modified porous boron nitride nanometer material, a preparation method and application thereof. A porous boron nitride precursor is prepared by taking melamine and boric acid as raw materials, and the precursor is reacted with Pd(OAc)2 to obtain the single-palladium-atom modified porous boron nitride nanometer material with a large specific surface area and pores. The single-palladium-atom modified porous boron nitride nanometer material prepared by the present application contains palladium with high catalytic capacity, has a large specific surface area and pores, and is characterized by the single-palladium-atom modification. The palladium loaded on the single-palladium-atom modified porous boron nitride nanometer material has the characteristics of small particle size and uniform dispersion, and thus has excellent catalytic effect. Moreover, the single-palladium-atom modified porous boron nitride nanometer material has good structural stability, is easy to separate from an organic medium, and can be used as a catalyst for Suzuki coupling reaction.

The present invention discloses the preparation and application of a catalyst for catalyzing the conversion of furanol to methylfuran at room temperature, belonging to the field of fine organic chemicals. Using solid aluminum phosphate as an acidic support, the invention introduces palladium nanoparticles or single-atom palladium atoms via impregnation-reduction to produce a palladium cluster- or single-atom palladium-supported hydrogenation-acid catalytic bifunctional catalyst. This catalyst can catalyze the conversion of furanol to methylfuran in a single step at room temperature with excellent catalytic activity and high selectivity, providing new ideas and methods for the efficient catalytic conversion of biomass.

Provided are organometallic compounds comprising a platinum or palladium atom as the central metal atom which is coordinated by a tetradentate ligand. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

Provided are organometallic compounds comprising a platinum or palladium atom as the central metal atom which is coordinated by a tetradentate ligand comprising at least one imidazole ring which is fused to a 6-membered aromatic ring. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

The application discloses a kind of preparation methods of magnetic carboxyl chitosan microsphere metal organic framework core-shell structure industrial catalyst, which is prepared by ultrasonic-assisted reverse emulsion polymerization and green crosslinking agent carboxyl chitosan coated ferroferric oxide microspheres, then in-situ growth metal organic framework on the surface of microsphere, then reduce palladium ion in the pore of metal organic framework, and then prepare core-shell structure industrial catalyst with uniform particle size, strong stability, high efficiency, magnetism, reusable.The large specific surface area and pore structure of metal organic framework provide a large number of fixed sites for palladium atoms, increase the contact area and probability of catalyst and reactant, significantly improve the catalytic activity;The method of the application is simple, low cost, green and environment-friendly, and the obtained core-shell structure catalyst has high catalytic efficiency, easy recycling and other advantages, and has great application potential in inorganic chemical industry, organic chemical industry, petroleum chemical industry and environmental purification.

The invention discloses a supported boron-doped oxidation-state Pd atom cluster catalyst and a preparation method and application thereof.The preparation method comprises the steps that the geometric size and electronic structure optimization of Pd atom clusters is achieved through Pd precursor regulation and B atom doping, a B-doped oxidation-state Pd atom cluster material substrate is carbon nitride, the loading capacity of the Pd atom clusters is 0.5%-2%, and the loading capacity of the B-doped oxidation-state Pd atom cluster material substrate is 0.5%-2%. B atoms are distributed in Pd atom clusters, the molar ratio of the B atoms to the Pd atoms is (0.01-0.2): 1, and the average valence of the Pd atoms is Pd1 +-Pd4 +. The catalyst can catalyze hydrogen peroxide at normal temperature and normal pressure to efficiently mineralize carboxylic acid-containing perfluorinated compounds such as perfluorooctanoic acid in a water body through a chain reaction of decarboxylation coupling hydroxylation substitution defluorination, the defluorination rate exceeds 95%, and the activity of the catalyst is not influenced by environmental factors such as ions in water, soluble organic matters and pH; the catalyst is suitable for removing perfluorocarboxylic acid in surface water, underground water or industrial wastewater, and has the advantages of simplicity in operation, high efficiency, good stability and the like.

The invention relates to organic electroluminescent materials and devices. An organometallic compound comprising a platinum atom or a palladium atom as a central metal atom coordinated to a tetradentate ligand comprising at least five 5 to 10 membered rings, one of which is a 6 membered aromatic nitrogen-containing ring, is provided. Formulations comprising these organometallic compounds are also provided. Further provided are organic light emitting devices, OLEDs, and related consumer products utilizing these organometallic compounds.

Provided are organometallic compounds comprising a platinum or a palladium atom as the central metal atom which is coordinated by an at least tetra-dentate ligand comprising at least two 5-membered to 10-membered carbocyclic or heterocyclic rings. Also provided are formulations comprising these organometallic compounds. Further provided are organic light-emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.