260 results about "Lone pair" patented technology

A method of producing metal nanoparticles in a high yield rate and uniform shape and size, which is thus suitable for mass production. In addition, metal nanoparticles are provided that have superior dispersion stability when re-dispersed in various organic solvents, which thus suitable for use as a conductive ink having high conductivity. The method of producing nanoparticles includes mixing a metal precursor with a copper compound to a hydrocarbon based solvent, mixing an amine-based compound to the mixed solution of the metal precursor with copper compound and hydrocarbon based solvent, and mixing a compound including one or more atoms having at least one lone pair, selected from a group consisting of nitrogen, oxygen, sulfur and phosphorous to the mixed solution of the amine-based compound, metal precursor with a copper compound and hydrocarbon based solvent.

An organic electroluminescence device of the present invention comprises a light emitting layer held between electrodes, the light emitting layer containing at least a host material and a dye or pigment. The light emitting layer further comprises an additive exhibiting an absorption edge of which energy level is higher than that of an absorption edge of the dye or pigment, but the difference of the energy levels being less than 120 kJ / mol, having no lone pair, and including at least two aromatic rings. The additive of the present invention is selected from a group consisting of phenyl-substituted anthracenes, naphthyl-substituted anthracenes, naphthyl-substituted naphthalenes, pyrenes, and a naphthacene derivatives.

The invention provides a chemical-mechanical abrasive composition for use in semiconductor processing, which comprises an aqueous medium, an abrasive, and an abrasion accelerator. The abrasion accelerator mainly functions to enhance the removal rate of the substances to be removed, and selected from the compounds of the following formula, the acid-addition salts thereof, or mixtures of two or more of the foregoing compounds and salts:wherein X and Y are independently lone-pair electrons containing atoms or atomic groups; and R1 and R2 are independently H, alky, amino, aminoalkyl, or alkoxy. The chemical-mechanical abrasive composition of the invention may optionally comprise an acidic component and / or a salt thereof, so as to further enhance the abrasion rate. The invention further provides a method of using the above chemical-mechanical abrasive composition for polishing the surface of a semiconductor wafer.

Provided is a catalyst for the polymerisation of olefins of general formula: R''(C4R'mC5C4R'n)XMeQ wherein X is an hetero-atom ligand with one or two lone pair electrons selected from the elements of Group VA or VIA which can be substituted or non-substituted: (C4Rm'C5C4Rn') is a symmetrically substituted, 3,6-substituted fluorenyl; R' is hydrogen or hydrocarbyl radical having from 1-20 carbon atoms, a halogen, an alkoxy, an alkoxy alkyl or an alkylamino or alkylsilylo radical, each R' may be the same or different and m and n independently are 1, 2 3 or 4, with the proviso that the bilateral symmetry is maintained; R'' is a structural bridge between X and the (C4R'mC5C4R'n) ring to impart stereorigidity; Q is a hydrocarbyl radical having 1-20 carbon atoms or is a halogen; Me is a Group IIB, IVB, VB, or VIB metal as positioned in the Periodic Table of Elements; and Me can be in any of its theoretically possible oxidation states. Also provided are olefin monomers (particularly propylene) polymerised using these catalysts to form syndiotactic / atactic block polymers of high molecular weight and comprising at least 70% of syndiotactic triads.

An organically complexed nanocatalyst composition is applied to or mixed with coal prior to or upon introducing the coal into a coal burner in order to catalyze the removal of coal nitrogen from the coal and its conversion into nitrogen gas prior to combustion of the coal. This leads to reduced NOx production during coal combustion. The nanocatalyst compositions include a nanoparticle catalyst that is made using a dispersing agent. The dispersing agent includes at least one functional group such as a hydroxyl, a carboxyl, a carbonyl, an amine, an amide, a nitrile, a nitrogen having a free lone pair of electrons, an amino acid, a thiol, a sulfonic acid, a sulfonyl halide, and an. acyl halide. The dispersing agent forms stable, dispersed, nano-sized catalyst particles. The catalyst composition can be formed as a stable suspension to facilitate storage, transportation and application of the catalyst nanoparticles to a coal material. The catalyst composition can be applied before or after pulverizing the coal material or it may be injected directly into the coal burner together with pulverized coal.

The invention relates to a method for preparing a low-temperature nitrogen-doped graphene supported nano Pd hydrogenation catalyst. The method comprises the following steps: ultrasonically stripping graphite oxide, thereby obtaining an aqueous solution of highly dispersed graphite oxide; selecting different nitrogen sources, and synthesizing nitrogen-doped graphene at low temperature through a hydrothermal method; and performing ultrasonic treatment on the nitrogen-doped graphene, adding a certain amount of PdCl2 solution, and adding a reducing agent, thereby preparing the highly dispersed supported nano Pd hydrogenation catalyst by a chemical reduction method. Because nitrogen atoms, which contain lots of lone pair electrons and can achieve a coordination effect with metal nanoparticles, are mixed into a carbon skeleton of graphene, runoff and conglomeration of the metal nanoparticles are effectively avoided, and the dispersity of the metal nanoparticles on the surface of graphene is improved. The catalyst is used for a hydrogenation reaction of olefins and has extremely high catalytic activity and high reusability. The catalyst is simple in preparation method and low in cost, the nitrogen content is high, doped nitrogen is controllable, and industrial production is easily realized.

This invention provides a low-temperature sintering conductive paste for high density circuit printing which can form a fine circuit having good adhesive force, a smooth surface and low resistance when applied on a substrate and then baked; the conductive paste of the invention uses, as conductive media, in combination with metal fillers having an average particle diameter of 0.5 to 20 mum, ultrafine metal particles having an average particle diameter of not larger than 100 nm, which are set in the state that the surfaces thereof are coated with one compound or more having a group comprising a nitrogen, oxygen, or sulfur atom and capable of coordinate-bonding by a lone pair existing in the atom, as a group capable of coordinate-bonding to a metal element contained in the ultrafine metal particles, and are dispersed uniformly in a resin composition comprising a heat curable resin component, an organic acid anhydride or a derivative thereof or an organic acid, and one or more organic solvent; and thereby it enables low-temperature sintering of the ultrafine metal particles during a heat treatment at a low temperature.

A chemiluminescent substrate of a hydrolytic enzyme having the following general Formula I is disclosed, as follows:Lumi-M-PFormula Iwhere “Lumi” is a chemiluminescent moiety capable of producing light (a) by itself, (b) with MP attached and (c) with M attached. Examples of Lumi include chemiluminescent acridinium compounds, benzacridinium compounds, quinolinium compounds, isoquinolinium compounds, phenanthridinium compounds, and lucigenin compounds, spiroacridan compounds, luminol compounds and isoluminol compounds. M is a multivalent heteroatom having at least one lone pair of electrons selected from oxygen, nitrogen and sulfur, directly attached to the light emitting moiety of Lumi at one end and to P at the other end. P is a group that can be readily removed by hydrolytic enzymes. An enzymatic reaction utilizing the above compound is the following:where HE is a hydrolytic enzyme. Lumi-M is a chemiluminescent product having physical and / or chemical properties different from those of Lumi-M-P.

The invention discloses compound used for removing heavy metal ions. Compound structurally comprising functional groups capable of providing lone pair electrons is loaded on a polymer carrier and can form coordinate bonds with the heavy metal ions. The compound can remove heavy metal ions in traditional Chinese medication extract or industrial waste water and the like high-efficiently and rapidly, thereby having industrializing prospect.

The invention discloses a phosphorus-containing Schiff base structured flame retardant and a preparation method thereof. The phosphorus-containing Schiff base structured flame retardant consists of hyperbranched macromolecules; a hyperbranched repeat unit is shown in the formula (I) as shown in the specification; in the formula, R1 is a phosphorus-containing structure, and R2 is a trifunctional structure; the molecular weight of the flame retardant is 500-100000. The flame retardant disclosed by the invention consists of hyperbranched macromolecules and is relatively large in molecular weight; when the flame retardant is used in polyurethane foams, the carbon residue amount of polyurethane can be greatly increased; the flame retardant disclosed by the invention is free of halogen and is a green and environment-friendly flame retardant; the flame retardant contains substances of a Schiff base structure, and due to existence of a C=N structure, very important chemical and biological significances can be achieved due to lone pair electrons on N atoms.

The present invention provides a conductive metal paste, available for fabrication of a metal fine particle sintered product layer, which has excellent adhesion to a surface of an underlying substrate such as a glass substrate and also has good conductivity. The conductive metal paste according to the present invention contains, per 100 parts by mass of the metal fine particles whose average particle size is 1 to 100 nm, 10 to 60 parts by mass in total of one or more compounds which are used in a coating molecular layer on a surface of a metal fine particle and which have a group capable of coordinate bonding to a metal element contained in the metal fine particles via a lone pair held by a nitrogen, oxygen, or sulfur atom, and also contains one or more metal compounds which are reduced by heating up to 250° C. or higher to be able to precipitate a metal atom such that a total amount of metals contained in the metal compound is within a range from 0.3 to 7 parts by mass, and further, 100 to 500 parts by mass of an amine-based solvent capable of dissolving the metal compounds blended per 10 parts by mass in total of metals in the metal compounds, wherein all of these components are uniformly dissolved and dispersed in an organic solvent used as a dispersion solvent for the metal fine particles.

Disclosed is a binder for an electrochemical element, which does not contain any component that is decomposed at a voltage at which lithium is inserted into a negative electrode active material, and has excellent output properties ad life properties without being increased in internal resistance. Specifically disclosed are binder particles for an electrochemical element, each of which is composed of a core part and a shell part, and is characterized in that the shell part comprises a polymer that contains a monomer unit containing an atom having a lone pair wherein the atom is converted into the form of a quaternary cation with an organic acid.

The present invention relates to an organic light emission diode device coated with a capping layer and application thereof. The organic light emission diode device comprises: a substrate layer; a first electrode located on the substrate layer; an organic light emission functional layer located on the first electrode; a second electrode located on the organic light emission functional layer; and acapping layer located at one side, emitting the light, of the organic light emission diode device, wherein the capping layer comprises an organic compound, the organic compound of the capping layer comprises the following features that: the molecular weight is in a range of 500-1200, the organic compound comprises lone pair electrons, and the number of the lone pair electrons is not less than 2.The present invention further relates to the application of the organic light emission diode device coated with the capping layer for display or lighting devices.

The invention relates to an electrode for a flow energy storage battery. The electrode is prepared by carrying out surface nitrogen mixing and modification on a carbon material, the number of nitrogen atoms of the electrode surface accounts for 2-10 % of the total number of surface atoms, the existing forms of the surface nitrogen contain pyridinic nitrogen, wherein the number of the pyridinic nitrogen atoms accounts for 30-80 % of the total number of surface atoms. According to the invention, lone pair electrons of the pyridinic nitrogen increase the electron density of a graphite layer, thus the electrocatalytic activity of the carbon material is increased; in addition, the introduction of surface nitrogen-containing function groups improves the hydrophilicity of carbon electrode materials; and by doping nitrogen atoms, the conductivity of the electrode material is increased, thus the voltage efficiency and energy efficiency of the flow energy storage battery containing the electrode material are increased. Simultaneously the preparation method is simple and practicable, has no special requirements of devices, has the advantages of convenient operation, low cost, and high practical value, and is easy for batch production.

The invention discloses a near-infrared photo-thermal dye based on aza-fluoro borane, preparation and application. The photo-thermal dye comprises an electron-donating group containing lone pair electrons and a basic aza-fluoro borane skeleton. The near-infrared photo-thermal dye based on aza-fluoro borane is prepared through steps as follows: (1), ketene synthesis: ketene is prepared from aldehyde ketone by an addition-elimination reaction under the alkaline condition; (2), an addition reaction of ketene and nitromethane; (3), a cyclization reaction; (4), a coordination reaction: a product obtained in the step (3) coordinates with boron difluoride, and a target product is obtained. The photo-thermal dye can be applied to the technical fields of photodynamic therapy and photo-thermal therapy under the guidance of photo-thermal imaging and photo-acoustic imaging, bio-marker and detection and the like.

The invention provides a high polymer compound chelated with heavy metal elements, which is characterized in that the compound comprising a functional group that can provide lone pair electrons is loaded on a high polymer vector and the heavy metal elements are chelated on the compound. The invention also provides a preparation method of the high polymer compound and application thereof to removing pesticide residues. The invention has the advantages that: the high polymer compound has easily-obtained raw materials, lower cost as well as simple preparation method and use method, can simultaneously remove a plurality of pesticide residues efficiently, rapidly and conveniently and reach national standards related to pesticide residues; and the invention has no defects in a biodegradation method, a physical removing method and a chemical degradation method, and the like which are used commonly and is a good method which can be popularized and has industrial potential.

The invention relates to an ionic iridium complex, which can be used as doping phosphorescence dye of organic light emitting diode or luminescent layer dye of electromechanical cell lighting device. The compound formula of the invention is represented as below, wherein C^N represents a hetero-aromatic ring first ligand coordinated with sp2 hybridized C atom and sp2 hybridized N atom, N^N represents a neutral hetero-aromatic ring second ligand coordinated with lone-pair electrons on two sp2 hybridized N atoms, while the hetero-aromatic ring second ligand with two sp2 hybridized N atoms further comprises electronegative N and O atoms with conjugated with lone-pair electrons, A is a counterbalance anion with a negative charge. The inventive compound has high thermal stability, high illuminating efficiency, and simple adjustment on the illuminating color, simple synthesis process, and easy purification.

The invention discloses a metal chelate which takes plumbagin as ligand, and the synthesis method and application thereof. The metal chelate is represented by the right formula, wherein, M represents the metal ion able to accept lone pair electrons can be main group matel ion, or transition metal ion, or rare earth metal ion such as Ca(II), Mg(II), Sn(IV), Cu(II), Co(II), Ni(II), Zn(II), Fe(II), Mn(II), Ag(I), Mo(VI), Pd(II), Ru(III), W(VI), Pt(II), Y(III), La(III), Nd(III), Sm(III), Eu(III), Er(III). The invention synthesizes a series of metal chelate which takes plumbagin as ligand and reacts with the metal salt. The produced chelate has an inhibition to a plurality of tumor line. The result indicates a plurality of chelate having a more remarkable anti-tumor activity than the plumbagin and have a higher medicine value and can be used for the preparation of different anti-tumor medicine.

The invention discloses a Schiff base type fluorescent probe compound and a preparation method thereof. The Schiff base type fluorescent probe compound has a structure as shown in formula (I) in the specification and is characterized by comprising the following steps: (1) preparing a Rhodamine B-hydrazide compound; (2) preparing 9-bromoethyl carbazole; (3) preparing 3-formyl-9 ethyl carbazole; (4) synthesizing a Schiff base type fluorescent compound, wherein the synthesized Schiff base type fluorescent compound has ''C=N'' bonds, and the prepared compound has a large ''Pi'' conjugate plane aromatic ring structure and is good in fluorescence property; structurally, lone pair electrons and heterocyclic atoms such as O and N exist on the C=N, so the compound has a potential application in detection of metal ions in cells.

A method of producing metal nanoparticles in a high yield rate and uniform shape and size, which is thus suitable for mass production. In addition, metal nanoparticles are provided that have superior dispersion stability when re-dispersed in various organic solvents, which thus suitable for use as a conductive ink having high conductivity. The method of producing nanoparticles includes mixing a metal precursor with a copper compound to a hydrocarbon based solvent, mixing an amine-based compound to the mixed solution of the metal precursor with copper compound and hydrocarbon based solvent, and mixing a compound including one or more atoms having at least one lone pair, selected from a group consisting of nitrogen, oxygen, sulfur and phosphorous to the mixed solution of the amine-based compound, metal precursor with a copper compound and hydrocarbon based solvent.

The invention provides a coating combination which comprises a coupling agent, a flatting agent, a defoaming agent, a solvent and a poly ether ketone quaternary copolymer. The poly ether ketone quaternary copolymer comprises repetitive units indicated in the formula of 101 and the formula of 102, and the repetitive units indicated in the formula of 101 and the formula of 102 are in the mass ratio of 0.01-100 to 1. The poly ether ketone quaternary copolymer is taken as a base material in the coating combination, and the coating combination is obtained by further adding proper additives; the poly ether ketone quaternary copolymer is characterized in that nitrogen containing groups of a benzene and imidazole structure, a carbazole structure and the like are introduced in the main chain of poly ether nitrile ketone, the chain structure of the poly ether nitrile ketone is changed, and adhesive force of the coating combination to metal is improved through interaction force between lone-pair electrons and a metallic matrix on N.

Useful as a catalyst component for polymerizing olefin is the transition metal compound of the present invention represented by Formula (I): wherein M represents a transition metal compound of the fourth group in the periodic table; X represents a sigma bonding ligand; Y represents a Lewis base; T represents a group containing a sigma bonding atom; E is a specific group containing an atom which can coordinate with M via sigma lone pair; q is 1 or 2 and represents [(valency of M)-2]; r represents an integer of 0 to 3; R1 to R4 represent a hydrogen atom, a halogen atom, a hydrocarbon group, a halogen-containing hydrocarbon group, a silicon-containing group or a hetero atom-containing group.

The invention provides a polyaryletherketone quadripolymer and a preparation method thereof. The polyaryletherketone quadripolymer comprises repetitive units shown in formula 101 and formula 102 which are specified in the description. The molecular chain of the polyaryletherketone quadripolymer comprises a heteroatom-containing structure, and the copolymer has a good adhesion force on a metal base material through an interaction force between lone pair electrons on N and the metal base body. In addition, the polyaryletherketone quadripolymer provided by the invention has excellent mechanical properties, and high transparency and heat resistance. Experimental results indicate that the polyaryletherketone quadripolymer is mixed with a coupler, a defoamer, a leveller and a mixed solvent to prepare a paint, and the adhesion force of the paint for the copper base body is 0-2 levels; the hardness (pencil) of the paint is 2-3H; the flexibility is 1mm; the impact strength is greater than 100kg.cm; the heat resistance is that the paint cannot crack or fall off at 300+ / -20 DEG C; the paint is transparent and free of mechanical impurities.

The invention relates to a preparation method of a lithium ion battery anode material, aiming to provide a method for preparing a conducting film LiFePO4 cladding material containing nitrogen. The method comprises the following steps of: ball milling and mixing FePO4.4H2O, LiOH.H2O and a polyacrylonitrile emulsion, blending into a paste and putting the paste into a quartz reactor; regulating and controlling the microwave output power and controlling the reaction temperature to be at 150 DEG C; raising the microwave output power in an oxygen atmosphere and heating up to 300 DEG C from 150 DEG C; switching to a highly pure nitrogen atmosphere, raising the microwave output power and heating up to 600 DEG C from 300 DEG C; and continuously raising the microwave output power under the highly pure nitrogen atmosphere and annealing at 700-800 DEG C for denitrifying. Nitrogen atoms remain on the conducting carbon film formed by the invention, and lone pair electrons of the nitrogen atoms can effectively improve the conductivity of the carbon film so as to improve electrochemical and dynamic properties of the anode, reduce the electrode polarization and improve the velocity volume of the lithium cell, thus the invention can be applied to power cells of electric vehicles.

The present invention relates to a high-efficiency planar heterojunction perovskite thin film solar cell and a preparation method thereof. A DMSO solution (a solvent of dissolved perovskite precursorsubstances) is added into a solution of a hole transport layer, and a spin-coating method is employed to prepare the hole transport layer. Oxygen atoms in the DMSO comprise lone pair electrons, nakedbindungslos CH3NH3+ at a perovskite crystal boundary can be effectively combined through electrostatic interaction to improve the crystal quality of perovskite crystal so as to improve the light absorbing ability of the perovskite thin film; and the DMSO can dissolve the perovskite thin film, part of the hole transport materials can be permeated at the surface of a perovskite layer to form a mixing layer of interinfiltration of the perovskite and the hole transport materials to allow a light absorbing layer and the hole transport layer to be more compacted so as to avoid the generation of badcontact phenomena such as holes and needle eye formed between layers. The improvement of perovskite film formation quality and contact conditions between layers is improved while the DMSO is added into an HTM, and therefore the photoelectric property of the PSCs is effectively improved.

The invention discloses a method of removing thiophene sulfides in fuel oil by taking an Ag2O / SiO2-ZrO2 compound aerogel as an adsorbent. The method comprises the following steps: filling a fixed bedadsorption device with the Ag2O / SiO2-ZrO2 compound aerogel as the adsorbent; introducing simulated gasoline containing thiophene sulfur at an air speed of 1-10h<-1> at 0-100 DEG C; and adsorbing the simulated gasoline to obtain simulated gasoline, the sulfur concentration of which is smaller than 1ppm. According to the Ag2O / SiO2-ZrO2 compound aerogel, Zr<4+> is introduced in a silicon framework structure of the aerogel to generate an acid L, lone pair electrons on an S atom of the thiophene compound are alkaline, the thiophene sulfides can be adsorbed to the centre of the acid L of the aerogelmatrix Ag2O / SiO2-ZrO2 through acid and alkali action, and the adsorption property of the aerogel on the thiophene sulfides can be further improved by means of pi complexation and acid and alkali action. The adsorption reaction is carried out at a constant pressure, the adsorption conditions are mild, the demand on adsorption equipment is low, and the method is convenient to operate. A good adsorption effect on the thiophene compounds is obtained.

The invention discloses a particle and a preparation method thereof. The particlecomprises a quantum dot and a surface ligand bound to the surface of the quantum dot. The molecular structure of the surface ligand is P1-P2-P3, wherein the P1 is a coordination group coordinated with an atom on the surface of the quantum dot, the P2 is an organic group with a conjugated system of a benzene ring and the P3 is an electron-donating organic group. In the present invention, a delocalized conjugated electron cloud is formed by the organic group P2 with the conjugated system of the benzene ring, and then the delocalized conjugated electron cloud system is moved to the coordination group P1 by the electron-donating organic group P3. Thus, the coordination ability of coordination lone pair electrons of a coordination atom on the coordination group P1 and the coordination atom on the surface of the quantum dot is greatly enhanced and the firmness of a coordination bond is enhanced. Therefore, sufficient passivation of the surface of the quantum dot can be effectively guaranteed and the luminescence performance of a quantum dot material can be improved.

The invention discloses a laminated single-phase multi-ferric material. The general formula of the material is ABM2O5, wherein A is one or more of Na, K, Rb and Cs; B is one or more of Bi and Pb; and M is one or more of Mn, Fe, Co, Ni and Cu. The invention further provides a hydrothermal preparation method and a high-temperature solid-phase preparation method of the multi-ferric material. The material is a newfound laminated structural material with a non-perovskite structure. In the structure of the material, G-type antiferromagnetic spin alignment is formed under the interaction of tetra-coordinated M ions, so that spinning inclination is facilitated to generate a net magnetic moment; and 6s2 lone pair electrons of A (Bi<3+> and Pb<2+>) ions are a source which keeps a sample be in a ferroelectric state. The multi-ferric material has wide application prospects in the aspects of information storage, spinning devices and sensors.

The invention relates to an olefin polymerization catalyst as well as a preparation method and application thereof. The olefin polymerization catalyst consists of a main catalyst component and a cocatalyst, wherein the main catalyst component is prepared by the following method: (1) reacting an organic magnesium compound with a hydroxyl group-containing compound in a carrier dispersant, adding a compound containing lone pair electrons for sufficient reaction, and then adding a titanium-containing compound and an inert carrier to obtain a suspension a; (2) reacting the organic magnesium compound with the hydroxyl group-containing compound in the carrier dispersant, adding the compound containing lone pair electrons for sufficient reaction, and then adding a vanadium-containing compound and the inert carrier to obtain a suspension b; (3) mixing the suspension a and the suspension b, adding an active center valence state regulator, and then drying through distillation to obtain the main catalyst component; the cocatalyst is at least one organic aluminum compound with the general formula of AlR5xCl3-x. Compared with the prior art, the olefin polymerization catalyst has the advantages of steady reaction efficiency within a relatively wide reaction temperature range, and the like.