37 results about "Lone pair" patented technology

The invention provides an environment-friendly chalcopyrite inhibitor and a copper-molybdenum separation method, and belongs to the technical field of copper-molybdenum separation. The environment-friendly chalcopyrite inhibitor is a sulfur-containing histidine derivative, a unique aromatic conjugated structure of the environment-friendly chalcopyrite inhibitor can be converted into sulfydryl through thiocarbonyl tautomerization, S in the sulfydryl and N atoms which contain lone pair electrons and do not participate in conjugation in an aromatic ring cooperate with each other, copper ions in chalcopyrite can be directionally chelated, a formed chelate is of an annular structure, and the chalcopyrite inhibitor can be used for inhibiting copper ions in chalcopyrite. Chelation with molybdenum in molybdenite is avoided, and excellent selectivity is shown. The environment-friendly chalcopyrite inhibitor contains carboxyl and tertiary amino at the same time, and it is guaranteed that the environment-friendly chalcopyrite inhibitor can efficiently inhibit target minerals in a wide pH window through the two hydrophilic functional groups of different structures. Based on the specific space structure of the environment-friendly chalcopyrite inhibitor, the types of functional groups and mutual cooperation of different functional groups, efficient selective inhibition of chalcopyrite in copper and molybdenum associated ores can be achieved safely and environmentally in a wide pH range.

The invention discloses a pure organic room-temperature phosphorescent material and a preparation method thereof, and relates to the technical field of organic phosphorescent materials. The structural formula of the pure organic room-temperature phosphorescent material is as follows: R1 and R2 are independently selected from substituted or non-substituted alkyl, and R3 and R4 are independently selected from hydrogen, substituted alkoxy or non-substituted alkoxy. According to the present invention, the rotation resistance covalent bond is introduced between the electron donor and the electron acceptor, such that the electron donor and the electron acceptor cannot be coplanar so as to achieve stable ground state-excited state molecular orbital separation; an ester group with lone pair electrons is introduced to a proper position on an electron acceptor, so that the ester group is overlapped with a molecular orbit of an electron donor through the lone pair electrons, thereby providing an n-pi transition path in a triple excited state, and further greatly improving kP. Compared with the existing pure organic room-temperature phosphorescent material, the kP of the pure organic room-temperature phosphorescent material provided by the invention is improved by one order of magnitude, and stable phosphorescent emission can be realized in air.

The molecular adsorbent according to the present application adsorbs a polar molecule, and contains, as an active ingredient, an ion exchanger having: an ion exchange resin containing an ion exchange group which is a strongly acidic group; and a metal ion or a complex of a metal ion which is ion-exchanged with the ion exchange group. The polar molecule contains a nitrogen atom having a lone pair of electrons. The metal ion is one or more of a metal ion of 3 valence or more, Co 2+ , Cu 2+ , Ni 2+ , Mn 2+ , V 2+ , Cs + , Rb + , and K + .

The invention discloses a slow-release, scale-inhibition and corrosion-prevention multifunctional integrated agent and a preparation method and application thereof.The structural formula of the slow-release, scale-inhibition and corrosion-prevention multifunctional integrated agent is # imgabs0 #. Aromatic rings and N and O heteroatoms with air-pair electrons are introduced into molecules, so that the interaction between the molecules and the metal surface is enhanced, the corrosion inhibition performance of a product is improved, and the corrosion resistance of the product is improved; the introduction of a sulfonic acid group further improves the corrosion inhibition and temperature resistance; hydroxyl, phosphonic acid or sulfonic acid and other hydrophilic groups can well prevent chelation of metal ions and inhibit formation of scales. Meanwhile, the quaternary ammonium salt has a certain bactericidal effect, and after the medicament with the integrated function is made into a solid product, long-term effective anti-corrosion and anti-scaling effects can be provided.

The application discloses a kind of antifungal matrine derivatives and preparation method and application, with sophocarpine and thiourea reaction;The lone pair of electrons on the nitrogen atom of thiourea attacks C13 in matrine, and a series of antifungal matrine derivatives are synthesized by nucleophilic addition of thiourea matrine intermediate, with thiourea matrine and alpha-brominated R group ketone as reactant to synthesize a series of antifungal matrine derivatives with ethanol as solvent.The application not only enhances the bacteriostatic activity of matrine derivatives, but also has simple preparation method and easy control of reaction conditions.

This invention discloses a solid catalyst component for olefin polymerization, its preparation method, and a catalyst containing the same component. The solid catalyst component for olefin polymerization includes a support, a titanium-containing compound, and an internal electron donor. The internal electron donor has the following structure: where R1, R2, R3, and R4 may be the same or different, and are selected from hydrogen atoms, C1 to C4 atoms. 20 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C6-C 20 aryl, C7~C 20 Aryl groups and C7-C 20 The alkoxyaryl group. The solid catalyst component for olefin polymerization of the present invention uses a bisphosphine compound containing a thiophene structure as an internal electron donor. The lone pair electrons of the phosphorus and sulfur atoms in the internal electron donor can stabilize the central metallic titanium, thereby giving the catalyst high activity during olefin polymerization.

The invention discloses a perovskite precursor solution, a perovskite thin film, a perovskite battery and an electric device. The perovskite precursor solution comprises a surfactant, the structure of the surfactant comprises a hydrophilic group, a hydrophobic group and a first functional group which are different from one another, the first functional group is a Lewis basic group containing lone pair electrons, and the lone pair electrons exist in at least one of N atoms and S atoms.

The present invention provides a method for detecting the relative concentration of microscopic optical flaws in micro-areas of the processed surface of a fused quartz optical element, which belongs to the field of engineering optics technology. In order to solve the problem that the existing technology for characterizing point defects on the processed surface of a fused quartz element is only suitable for characterizing and distinguishing the types of point defects, and there is no effective method for detecting the relative concentration of point defects. The present invention conducts a photoluminescence detection experiment on the micro-defect area of ​​the processed surface of a fused quartz optical element to obtain the point defect type in the defect area and the peak area of ​​the sub-peak curve corresponding to different point defects, establishes the relationship between the concentration of lone pair electrons contained in the point defect and the peak area of ​​the sub-peak curve, calculates the relative concentration of lone pair electrons contained in different point defects, and calculates the relative concentration of different point defects in the micro-defect area of ​​the processed surface of the fused quartz in combination with the chemical structure and reaction law of the point defect. The present invention fills the technical gap that is currently unable to obtain the relative concentration of point defects on the surface of a material.

The present invention provides a novel compound containing a rigid fluorenyl substituent in 1, 10-phenanthroline having lone pair electrons, and an organic light-emitting element comprising the same. When applied to one or more organic layers, including an electron transport layer (ETL), a hole blocking layer (HBL), and an N-type charge generation layer (N-CGL), the novel compound enables the realization of a low-voltage, high-efficiency, long-life organic light-emitting element.

The application provides a catalyst and a preparation method thereof, and a preparation method of 2,2,6,6-tetramethyl-4-piperidinol, and relates to the technical field of catalysts. The catalyst comprises a carrier and a transition metal supported on the carrier, and the carrier is an ordered mesoporous titanosilicate material internally modified with nitrogen-carbon material and containing trivalent titanium. The carrier in the catalyst of the application is an ordered mesoporous titanosilicate material internally modified with nitrogen-carbon material and containing trivalent titanium, the nitrogen in the nitrogen-carbon material can provide a lone pair of electrons, which is a Lewis base site, and the trivalent titanium is in an electron-deficient state, which is a Lewis acid center, and the two form a hindered Lewis acid-base pair in the ordered mesoporous confined space. The hindered Lewis acid-base pair formed in the catalyst is beneficial to anchoring the transition metal active component and promoting the adsorption and activation of the reaction substrate tetramethylpiperidone, thereby helping to improve the reaction kinetics of the catalytic hydrogenation process.

One aspect of this invention is a novel functional polymer having a polydispersity from 1 to about 1.12 comprising at least one reactive moiety, selected from a moiety comprising at least one N-coordinative functional group having at least one lone pair of electrons, a moiety comprising a dialkylsilyl group, or a mixture of both groups, wherein said reactive moiety is present in said functional styrenic polymer either on a repeat unit, on an end group or on both, and said N-coordinative functional group is either a monodentate N-coordinative functional group, a polydendate N-coordinative group or a mixture of thereof, and said monodentate N-coordinative functional group is an azide moiety (—N3) or a cyano moiety (—CN). Another aspect of this invention is the use of these novel polymer to selectively deposit a DSA directing layer on a metallic substrate.

The invention relates to a perovskite precursor solution, a perovskite thin film, a perovskite battery, and a power consumption device. The perovskite precursor solution contains a surfactant, the structure of which comprises a hydrophilic group, a hydrophobic group, and a first functional group, the first functional group being a Lewis base containing a lone pair of electrons, and the lone pair of electrons being located on at least one of the N atom and S atom.

The present application discloses an organic compound, a preparation method thereof, a mixture, a composition and a semiconductor device. By using a first reactant and a second reactant to generate a first intermediate product, a third reactant and the first intermediate product to generate a second intermediate product, a fourth reactant and the second intermediate product to generate a third intermediate product, and a fifth reactant and the third intermediate product to generate an organic compound, and replacing the covalent bond in the fluorene unit in the prior art with a hydrogen bond formed by the hydrogen in the amino group and the lone pair electrons on the nitrogen atom, a preparation process of a polymer material with a simple synthesis route is realized.

The present invention discloses a birefringent crystal and a preparation method thereof, belonging to the technical field of optical materials. The chemical formula of the birefringent crystal is (C 12 H8N2)SbF2(H2PO3); The space group of the birefringent crystal is the P-1 space group of the triclinic system; the unit cell parameters are α=106.324°, β=90.246°, γ=105.428°, and Z=2. The present invention adopts o-phenanthroline phosphite ionic liquid to synthesize birefringent crystals by an ionothermal method, which effectively solves the problem that Sb(III) is easily hydrolyzed. In the birefringent crystals prepared by the present invention, the N atoms on the o-phenanthroline ring chelate with the Sb atoms to form a coordination bond so that the lone pair of electrons of Sb always maintains a certain angle with the b-plane, which significantly improves the birefringence of the obtained birefringent crystals.

This invention discloses a butterfly-shaped NBS-COFs catalyst and its preparation method, belonging to the field of photocatalysis technology. Firstly, a butterfly-shaped thiophene sulfone-based precursor is reacted with a borate group via a Schiff base reaction to construct a covalent organic framework (BS-COFs) containing an electron-deficient component and a borate sulfone group. The methyl group provides the basis for the subsequent aldol condensation reaction. Secondly, a post-modification method is used to react the aldehyde group on the amino compound with the methyl group on the BS-COFs via an aldol condensation reaction, forming an NBS-COFs catalyst with an aminated, highly conjugated system and an electron-deficient structure. Thirdly, the lone pair electrons on the amino group are directionally anchored to the empty orbitals of Pt, thereby achieving high dispersion of Pt. The introduction of thiophene sulfone expands the light absorption range, and the planar structure facilitates the transport of photogenerated charges along the framework. The combination of thiophene sulfone and the electron-deficient component accelerates the separation and transport of photogenerated carriers, while the conjugated system avoids charge recombination. When used for photocatalytic water splitting to produce hydrogen, it exhibits excellent hydrogen production rate and stability, showing promising prospects in the field of photocatalysis.

The invention discloses a fluorine-functionalized covalent organic framework material, a solid-phase microextraction probe and a method for detecting LCMs in a complex matrix, and the fluorine-functionalized covalent organic framework material is formed by copolymerizing three monomers, namely tetraaminophenyl porphyrin, tetraaldehyde phenyl porphyrin and 3, 5-bis (trifluoromethyl) phenylacetylene by adopting a solvothermal method. The synthesized Por-CF3-COF has a quinoline-connected nitrogen heterocyclic ring, a trifluoromethyl functionalized site and a porphyrin ring cavity, and a functionalized modified fluorinated electron donor region, a large conjugate system and a hydrophobic site, so that the Por-CF3-COF is directionally combined with LCMs through lone pair electron-pi interaction and pi-pi interaction; the hydrogen bond interaction between the H atom of the Por-CF3-COF aromatic ring and the F of the LCMs further promotes the molecular contact of the fluorescent probe and the LCMs, so that the quantitative detection of trace LCMs in a complex environment system is realized.

The invention relates to a semiconductor wafer after-amination cleaning solution and a preparation method and application thereof, and the semiconductor wafer after-amination cleaning solution comprises the following components by weight: 60-80 parts of an alcohol organic matter; 1-4 parts of a phenolic acid compound; 0.5 to 2 parts of a pyridazine compound; and 10 to 20 parts of ultrapure water. The combination of phenolic acid compounds and pyridazine compounds is adopted, the phenolic acid compounds and the pyridazine compounds contain polar groups of O and N atoms with large electronegativity, the O and N atoms with large electronegativity in the polar groups contain lone pair electrons, and the lone pair electrons interact with metal, so that the electronegativity of the metal is improved. Therefore, a protective barrier is formed between metal and alloy surfaces and a corrosive medium, and the purpose of retarding metal corrosion is achieved.

The present invention discloses a blue light-emitting compound containing a cyclohexyldibenzofuran structure and an organic electroluminescent device containing the same. The general structural formula of the blue light-emitting compound is as shown in Formula I or Formula II, wherein Ar1 represents a cyclohexyldibenzofuran group. By introducing a cyclohexyldibenzofuran group into the compound structure, the intermolecular distance is increased under the mutual repulsion of the lone pair electrons of the oxygen atom, the fluorescence quantum yield is improved, and it is beneficial to improve the efficiency of the device and extend the life. In addition, the compound of the present invention has good thermal stability and its rigidity is also enhanced, thereby indirectly reducing the problem of device performance degradation due to heat generation, which is beneficial to further improve the efficiency and life of the device. I; II.

The present application relates to an additive having the general structure I, wherein R 1 and R 2 are independently of each other hydrogen or C1-C 12 alkyl; R 3 and R 4 are independently of each other hydrogen, halogen or C1-C 12 alkyl; R 5 is hydrogen or C1-C 12 alkyl; R 6 is a 4-20 membered nitrogen-containing heterocyclyl group which is unsubstituted or substituted by a substituent, or a 5-20 membered nitrogen-containing heteroaryl group which is unsubstituted or substituted by a substituent, the substituent being halogen, hydroxyl, primary amino, secondary amino, C1-C 12 alkyl or C1-C 12 alkoxy; m is an integer from 1000 to 10000; n is an integer from 10 to 1000. In the additive of the present application, the group R 6 is a nitrogen-containing heterocyclyl group or a nitrogen-containing heteroaryl group, in which the nitrogen atom has a lone pair of electrons, which can form a strong adsorption to HF in the battery, thereby fixing the HF and avoiding its destruction of the passivation layer on the surface of the positive current collector, so that the corrosion of the positive current collector such as aluminum foil can be greatly alleviated, and the service life of the battery can be prolonged.

The disclosure provides a perovskite film containing a bifunctional additive, a light-emitting diode and a preparation method thereof, wherein the bifunctional additive has a structure as shown in formula (1): wherein A1 is selected from C1-C5 alkyl; X is selected from at least one lone pair electron group containing N, O, F, Cl, Br and I, the lone pair electron group forms an intermolecular hydrogen bond self-assembly structure with the amino group in formula (1) as a physical spacing layer, inhibits the loss of non-radiative energy of the perovskite film caused by the generation of low-energy state exciton complexes at the interface of the charge transport layer, and passivates the unsaturated lead dangling bond caused by halide vacancies, thereby reducing defects in the perovskite film. By using the hydrogen bond or intermolecular force formed between the amino group in the additive and the amino group in formamidinium hydroiodide in the perovskite system, the grain growth during the perovskite film formation process is slowed down, thereby inducing the FAPbI3 perovskite film to have higher crystallinity, and improving the quality and light-emitting efficiency of the film.

The present invention provides an organic compound that can be suitably used as a light-emitting material for displays, and an organic light-emitting device containing such an organic compound. [Solution] An organic compound according to one embodiment of the present invention has a lone pair of electrons and a π electron orbital, and the energy level E of the lowest singlet excited state S1 S1 From the lowest triplet excited state T1, the energy level E T1 The energy difference ΔE after subtracting ST -0.20eV≦ΔE ST It is <0.0090 eV.

The application discloses a kind of tetraphosphine ligand complexes and preparation method and application, belong to organic synthesis technical field.The application is with imino pyridine-containing bisphosphine ligand, metal ion as connecting center, pyridine nitrogen and imine nitrogen lone pair electron and cheap and easy to obtain metal ion coordination, thus can form a kind of pincer nitrogen phosphine ligand assembly and form tetraphosphine ligand complex.The ligand modified rhodium catalyst shows good catalytic activity and selectivity in olefin hydroformylation reaction.The application overcomes the shortcomings of traditional polyphosphine ligand synthesis difficulty, low yield and high price, only needs to be prepared by mild one-pot assembly step through commercially available or raw material, and the tetraphosphine ligand with strong stability and high yield can be prepared.The application solves the problem of harsh synthesis conditions and complicated steps of polyphosphine ligand in the prior art.

The invention relates to a thermal interface material with liquid metal dynamic bonds, a preparation method and a test method. The liquid metal heat-conducting material mainly comprises the following components in parts by weight: 50-90 parts of liquid metal, 10-30 parts of heat-conducting filler, 5-20 parts of metal filler and 0.1-0.3 part of coupling agent, the metal filler is used for reducing interface thermal resistance, the coupling agent is used for modifying the surface of the metal filler, groups on the surface of the metal filler are directionally increased due to the addition of the coupling agent, the number of lone electron pairs is increased, and the heat-conducting property of the liquid metal is improved. Therefore, the formation of dynamic bonds of the liquid metal is facilitated, the interaction force between the liquid metal and the heat-conducting powder is increased, and the viscosity is improved. The material has excellent heat-conducting property and viscosity.

This invention belongs to the field of optoelectronic material preparation and application, and discloses a class of bifunctional phosphonic acid self-assembled molecules, their preparation and application. The self-assembled molecule has a structure as shown in one of general formulas A-1 to A-4, wherein the R1 and R2 groups are independently selected from groups containing lone pairs of electrons. This invention modifies the molecular structure by introducing groups R1 and R2 (e.g., benzaldehyde, methyl sulfone, benzyl oxy) containing lone pairs of electrons to form new self-assembled molecules while retaining the phosphonic acid groups. The resulting phosphonic acid self-assembled molecules possess both hole carrier transport function and perovskite interface defect passivation function, exhibiting bifunctionality.

The present application provides an environmentally friendly chalcopyrite inhibitor and a method for separating copper and molybdenum, belonging to the field of copper-molybdenum separation technology. The environmentally friendly chalcopyrite inhibitor is a sulfur-containing histidine derivative, and its unique aromatic conjugated structure can be converted into a thiol group through tautomerism of the thiocarbonyl group. The S in the thiol group and the N atom in the aromatic ring that contains a lone pair of electrons and does not participate in the conjugation cooperate with each other to directionally chelate the copper ions in the chalcopyrite. The formed chelate has a cyclic structure, which avoids chelation with the molybdenum in the molybdenite and shows excellent selectivity. The environmentally friendly chalcopyrite inhibitor contains both carboxyl and tertiary amine groups. These two types of hydrophilic functional groups with different structures ensure that the environmentally friendly chalcopyrite inhibitor can efficiently inhibit the target mineral in a wider pH window. Based on the specific spatial structure, functional group types and mutual cooperation between different functional groups of the environmentally friendly chalcopyrite inhibitor, it is possible to achieve efficient and selective inhibition of chalcopyrite in copper and molybdenum associated ores in a safe and environmentally friendly manner over a wide pH range.

The invention relates to a material of the formula SnTiO3 having a crystal structure comprising layers, wherein the layers comprise Sn(II) ions, Ti(IV) ions and corner- sharing O6-octahedra, the corner-sharing O6-octahedra form sub-layers, the Ti(IV) ions are located within 2 / 3 of the corner-sharing O6-octahedra to form corner-sharing TiO6-octahedra, the corner-sharing TiO6-octahedra form a honeycomb structure comprising hexagons within the sub-layers, the hexagons have Ti(IV)-voids within, the Sn(II) ions are located above and below the Ti(IV)-voids with respect to the sub-layers and the crystal structure satisfies at least one of the following features (i) and (ii): (i) the Sn(II) ions have a tetrahedral coordination shell, the tetrahedral coordination shell contains three O ions of the layer and an electron lone pair of the Sn(II) ion, the electron lone pair is located in a top position with respect to the three O ions of the layer, (ii) the layers are stacked in a specific manner.

The present application discloses an organic compound and a preparation method, mixture, composition and semiconductor device thereof. The organic compound is generated by using a first reactant and a second reactant to generate a first intermediate product, a third reactant and the first intermediate product to generate a second intermediate product, a fourth reactant and the second intermediate product to generate a third intermediate product, and a fifth reactant and the third intermediate product to generate the organic compound. The hydrogen bond formed by the hydrogen in the amine group and the lone pair of electrons on the nitrogen atom replaces the covalent bond in the fluorene unit in the prior art, thereby realizing a preparation process for a small molecule material with a simple synthetic route.

The application provides an organic compound, an OLED device and a display panel. The organic compound provided by the application introduces a larger conjugated structure containing a nitrogen atom, and the lone pair electrons in the nitrogen atom are conjugated to a benzene ring. The structure formed by the seven-membered nitrogen-containing heterocycle and the large conjugated system generally has good stability, and the hole transport effect is obviously strengthened, which is related to the electronic structure distribution of the seven-membered nitrogen-containing heterocycle. The lone pair electrons of the N atom participate in the construction of the large conjugated system, so that the transmission is more matched. By introducing the seven-membered nitrogen-containing heterocycle in the conjugated system, the charge transport of the molecule can be more balanced, the stability of the host material can be improved, and the light-emitting device prepared therefrom can greatly improve the carrier transport efficiency of the device, and then improve the efficiency and service life of the device.

The present disclosure relates to a composition that includes a first layer that includes a polymer having a repeat unit with a structure that includeswhere m is between 2 and 100, inclusively, the repeat unit is protonated at at least one of position A) and / or B) and / or sulfonated at at least one of rings 1) and / or 2), R1 includes at least one of a lone pair of electrons, a covalent bond, hydrogen, and / or a hydrocarbon functional group, R2 includes at least one of a lone pair of electrons, a covalent bond, hydrogen, and / or a hydrocarbon functional group, and is a covalent bond.

The invention discloses a phosphorus-doped rigid conjugated macrocyclic compound as well as a preparation method and application thereof, and belongs to the technical field of organic photoelectric materials. According to the compound, phosphoropentene serves as an electron acceptor unit, CPP serves as an electron donor unit, a donor-acceptor (D-A) type rigid macrocyclic structure is formed through pi-conjugation, and the compound has the structure as shown in the formula (1), the formula (2) and the formula (3): # imgabs0 #. The material has the following advantages: (1) lone pair electrons of phosphorus atoms are synergistic with a pi system of CPP, the LUMO energy level is remarkably reduced (forward offset is 0.3-0.5 V compared with that of a pure carbocyclic ring system), and the electron mobility is improved; (2) a rigid skeleton inhibits non-radiative transition, the fluorescence quantum yield reaches 35-69%, and the fluorescence lifetime reaches 7.92-9.21 ns; and (3) the material can be used as an efficient light-emitting layer for OLED devices, or a high-sensitivity sensor can be constructed through an intramolecular charge transfer (ICT) effect, and the material has a wide application prospect in the fields of photoelectric conversion, information encryption and biological imaging.