42 results about "Pyridine ligand" patented technology

This invention discloses a novel chiral bipyridine ligand, its synthesis method, and its application. The novel chiral bipyridine ligand is selected from compounds with the following structures: The chiral ligand of this invention has been successfully applied in the copper-catalyzed asymmetric ring-opening / cross-coupling reaction of cyclic diaryl iodine and secondary amine, yielding the product with excellent yield and ee value.

This blue phosphorescent material includes: a central metal containing iridium; and a phenyl-imidazopyridine ligand which is a bidentate ligand of the central metal and has an iridium-carbon bond with the central metal, wherein the ligand may include a ligand in which a 2,6-dimethylphenyl functional group has been introduced to a phenyl group of the ligand. The present application relates to a blue phosphorescent material, a production method thereof, and photophysical properties thereof, the blue phosphorescent material having an iridium-carbon bond and including a phenyl-imidazopyridine ligand to which a sterically hindered functional group has been introduced.

The invention relates to a preparation method of a dimer-mediated organic polymer single crystal, and belongs to the technical field of organic polymer single crystals. The preparation method comprises the following steps: S1, carrying out coordination self-assembly on a metal salt, an alkenyl pyridine ligand and an auxiliary ligand in a solvent, and washing and drying to obtain a coordination polymer single crystal reaction template; s2, under irradiation of ultraviolet light or visible light, the coordination polymer single-crystal reaction template is subjected to a [2 + 2] light ring addition reaction, and a coordination polymer containing a cyclobutane dimer is obtained; s3, under the action of alkali liquor or acid liquor, dissociating the coordination polymer containing the cyclobutane dimer, extracting, concentrating and recrystallizing to obtain dimer single crystals; s4, under the irradiation of ultraviolet light or visible light, carrying out topological chemical polymerization reaction on the dimer single crystal to obtain an organic polymer single crystal; accurate and controllable preparation from the alkenyl pyridine ligand to the high-quality polymer single crystal with the self-supporting long-range ordered structure is successfully realized.

The invention discloses a hydrogen bond donor-terminated ionic polymer which is prepared by the following steps: by taking cyanuric chloride, a pyridine ligand or imidazole ligand and a pyridyl hydrogen bond donor as raw materials, carrying out reflux reaction in the presence of a solvent at 80-100 DEG C for 24 hours, cooling a reaction product to room temperature, carrying out solid-liquid separation, and washing and drying a solid, the hydrogen bond donor-terminated ionic polymer has the characteristics of simplicity and convenience in synthesis, high chemical stability, excellent performance, mild reaction conditions and the like, and more importantly, different catalytic active sites generated by the design can realize synergistic catalysis, so that the overall catalytic efficiency is remarkably improved, and the application prospect is broad. The material can catalyze the cycloaddition reaction of carbon dioxide (CO2) and an epoxy compound to generate cyclic carbonate under the conditions of no metal, no solvent and no cocatalyst, and shows high catalytic activity, high selectivity, remarkable catalytic effect, good recyclability and wide substrate adaptability.

The application discloses a luminescent coordination polymer crystal material based on a tetraphenylethylene pyridine ligand and a preparation method and application thereof, the chemical formula of the luminescent coordination polymer crystal material is [Cu(L)SCN.DMSO]n, wherein L is a 4.4'-[(2,2-diphenyl ethylene)di-4.1-phenylene]bis[pyridine] ligand, and n is an arbitrary value; wherein a Cu ion forms a two-dimensional structure with the 4.4'-[(2,2-diphenyl ethylene)di-4. n The crystal material can be used for fluorescence quenching detection of water-phase methyl orange; compared with the prior art, the crystal material is simple and reliable in application, the quenching constant of the crystal material for detecting water-phase methyl orange is as high as 1.9*10 6 M ‑1 , and the detection limit is as low as 0.019 mu M, so the crystal material is a luminescent coordination polymer crystal material for extremely sensitive detection of methyl orange at present and has a wide application prospect.

This invention provides a novel material for preparing X-ray structural analysis samples of organic compounds. The X-ray structural analysis sample forming material of this disclosure comprises a metal complex crystal. The metal complex crystal comprises a metal ion and a ligand coordinated to the metal ion, the metal complex crystal having a three-dimensional network structure with regularly ordered pores, the ligand comprising a carboxylic acid ligand (c) and a pyridine ligand (p), the carboxylic acid ligand (c) and the pyridine ligand (p) being a combination of the following [I] or [II]: [I] a compound represented by formula (c1) and a compound represented by formula (p1); [II] a compound represented by formula (c2) and a compound represented by formula (p2).

The present application relates to the technical field of rare earth catalyst, in particular to a preparation method and application of a high-stability homogeneous neodymium catalyst.The neodymium catalyst is composed of four components A, B, C and D, and the molar ratio of each component is A:B:C:D=1:(5-50):(0.5-6):(1-10).The prepared neodymium catalyst utilizes the coordination ability of pyridine ligand, forms steric hindrance, inhibits the association of rare earth neodymium catalyst, and improves the stability of the catalyst.The high-stability homogeneous catalyst can be prepared without adding diene, the viscosity of the catalyst is reduced, the aging time is shortened, and the problems such as the fluctuation of polymerization activity caused by the long preparation time of the catalyst are reduced, and the prepared rare earth butadiene rubber cis structure is adjustable.

Provided are a method for producing an anion exchange resin which is capable of producing an electrolyte membrane with excellent mechanical property (strength).A monomer for forming a hydrophobic group is reacted with a monomer for forming a hydrophilic group in the presence of bis(1,5-cyclooctadiene)nickel(0) as a catalyst, 2,2′-bipyridine as a co-ligand, a bromide or an iodide as a co-catalyst, and a reducing agent to produce an anion exchange resin where the hydrophobic group is connected to the hydrophilic group via direct bond, in which a mole number of bis(1,5-cyclooctadiene)nickel(0) is 0.3 to 1.8 times a total mole number of the monomer for forming a hydrophobic group and the monomer for forming a hydrophilic group.

The present invention belongs to the field of organic chemistry technology, and in particular to a highly active heterometallic CuIn‑MOF catalyst and a preparation method thereof and a method and application of its catalytic amino synthesis of organic azides, and more particularly to a method for preparing a heterometallic CuIn‑MOF catalyst material based on 3,5-bis(4-carboxylphenyl)pyridine ligands and its catalytic amino compound to prepare an azide compound. The inventive method is as follows: using CuIn‑MOF as a reaction catalyst, an amino compound is added to a reactor, reacted at a specific temperature, and after the reaction is completed, the product is separated and purified to obtain the corresponding organic azide compound. The present invention has the characteristics of simple operation, mild reaction conditions, short reaction time, high reaction purity, and being applicable to highly active amino compounds, is suitable for industrial production, and provides ideas and methods for subsequent highly active natural amino compounds to participate in click chemistry.

The application provides a preparation method of a photoelectric detector and the photoelectric detector. The preparation method of the photoelectric detector comprises the following steps: preparing a quantum dot solution, quantum dots in the quantum dot solution are wrapped by halogen; preparing a quantum dot dispersant by using a 2,6-bis(aminomethyl)pyridine ligand; adding the quantum dot solution into the quantum dot dispersant to obtain an active layer precursor; and preparing an active layer based on the active layer precursor, so as to prepare the photoelectric detector. The quantum dot dispersant prepared by introducing the 2,6-bis(aminomethyl)pyridine ligand into the active layer can effectively passivate surface defects of quantum dots in the quantum dot solution which are not sufficiently passivated by halogen ligands, so that exposed crystal surface defects of PbS CQDs are better passivated, and the photoelectric performance of the photoelectric detector is effectively improved.

The invention discloses a preparation method of a polydimethylsiloxane modified Pt-Ni bimetallic nano-cluster material, which comprises the following steps: under the condition of a hydrothermal method, introducing zinc citrate dihydrate, molybdic acid and a 2, 2-bipyridine ligand as one of raw materials to prepare a ZnMo bioxometallate cluster photo-thermal material, and then washing, carrying out high-temperature annealing reaction and cooling to room temperature to obtain the polydimethylsiloxane modified Pt-Ni bimetallic nano-cluster material. PDMS is deposited on the oxometallate through a vapor deposition technology, and the water-stable photo-thermal material is prepared. The ZnMo bioxometallate cluster photo-thermal material is obtained through a hydrothermal method, the ZnMo bioxometallate cluster photo-thermal material is blended with a polymer to form a special structure network, and then the photo-thermal material with high water stability is obtained. The photo-thermal efficiency under one sun reaches 70 DEG C, and the original structure can still be kept after one week in water. The method is an effective method for preparing the photo-thermal material with the water stability, and is simple and convenient to operate, green, safe, good in repeatability and high in efficiency.

The invention discloses a solid magnesium ion electrolyte based on a pyridine ligand, which is a compound composed of Mg (C5H5N) x < 2 + > composite cations and [B12H12] 2-anions, and x is greater than or equal to 1 and less than or equal to 6; the number of the pyridine ligands is 6. The preparation method comprises the following steps: step 1, preparing a Mg (H2O) 3B12H12 precursor MBH-W; and step 2, preparation of Mg (C5H5N) 6B12H12MBH-P. The preparation method comprises the following steps: preparing Mg (C5H5N) When the MBH-P-100 is applied as a magnesium ion solid electrolyte, the conductivity of the MBH-P-100 is 10 <-4 > S cm <-1 > under the condition that the working temperature is 140 DEG C; under the conditions that the polarization voltage is 1V, the test time is 4000 seconds and the test temperature interval is 120 DEG C, the electronic conductivity is 10 <-8 > S cm <-1 >.

This invention specifically relates to a boron-oxygen ligand-stabilized rare-earth or alkaline-earth metal catalyst, its preparation method, and its application, belonging to the field of catalyst synthesis technology. The catalyst has the structure shown in Formula I, where M is a rare-earth or alkaline-earth metal ion and D is an ether or pyridine ligand. The preparation method involves reacting a boron-oxygen ligand with a rare-earth alkyl or amino compound, or an alkaline-earth metal amino compound, in a hydrocarbon solvent, followed by post-treatment to obtain the target catalyst. This method has few steps, is simple to operate, and yields catalysts with diverse structures, exhibiting excellent catalytic activity and stability. The catalyst of this invention is used to catalyze the trimerization of isocyanates to prepare isocyanurates, offering advantages such as simple activation, high catalytic activity, mild reaction conditions, low catalyst dosage, and a wide range of applicable substrates. It overcomes the shortcomings of traditional catalytic systems, such as poor stability, large dosage, harsh reaction conditions, and low conversion rates, demonstrating promising industrial application prospects.

The present application relates to a kind of preparation method of dimer-mediated organic polymer single crystal, belong to organic polymer single crystal technical field.The preparation method of the present application includes the following steps: S1, metal salt, alkenyl pyridine ligand and auxiliary ligand are carried out coordination self-assembly in solvent, and coordination polymer single crystal reaction template is obtained by washing and drying;S2, under the irradiation of ultraviolet light or visible light, coordination polymer single crystal reaction template carries out [2+2] photo-cycloaddition, and the coordination polymer containing cyclobutane dimer is obtained;S3, under the action of lye or acid liquor, the coordination polymer containing cyclobutane dimer is dissociated, and dimer single crystal is obtained by extraction, concentration, recrystallization;S4, under the irradiation of ultraviolet light or visible light, dimer single crystal carries out topological chemistry polymerization reaction, and organic polymer single crystal is obtained;From alkenyl pyridine ligand to high-quality polymer single crystal with self-supporting long-range ordered structure, precision controllable preparation is successfully realized.

The invention relates to the fields of coordination chemistry and metal organic chemistry, and discloses a single iron hydrogenase model compound containing 3, 4 and 5-substituted pyridine ligands, the chemical structural formula is as follows: # imgabs0 #, R1 and R2 are identical or different monodentate ligands or R1 and R2 represent bidentate ligands, and R3 and R5 are identical or different and represent H or C1-C6 alkyl. R4 represents H or hydroxyl. The recombinase obtained by recombining the single iron hydrogenase model compound and decoenzyme has better stability and higher catalytic activity.

The invention relates to the technical field of supramolecular chemistry, in particular to a tetradentate pyridine ligand, a near-infrared two-region fluorescent metal cage as well as a preparation method and application of the tetradentate pyridine ligand and the near-infrared two-region fluorescent metal cage. The structural formula of the tetradentate pyridine ligand is shown in the specification, R is shown in the specification, and the element X is S or Se. The tetradentate pyridine ligand disclosed by the invention is a typical tetradentate pyridine ligand with a D-pi-A-pi-D structure and has strong near-infrared absorption capacity and efficient near-infrared two-region emission, and absorbed photon energy can be released in a fluorescent form; therefore, the metal cage prepared from the metal nano-material can be applied to in-vivo near-infrared two-region fluorescence imaging of mouse tumors. Due to the small ground state-excited state energy gap difference of the tetradentate pyridine ligand, photon energy absorbed by the metal cage prepared from the tetradentate pyridine ligand can also be released in the form of non-radiative transition, namely heat, so that the metal cage can be further applied to photo-thermal imaging and photo-thermal treatment and can play a complementary role with near-infrared two-region fluorescence imaging, and the in-vivo imaging quality is improved.

The application belongs to the technical field of new materials, and particularly relates to a zinc-based complex and a preparation method and application thereof. The chemical general formula is [Zn3(TMTA)3(DPP).DMF.H2O], wherein Zn is a divalent zinc ion, TMTA is a deprotonated 4,4',4''-(2,4,6-trimethylbenzene-1,3,5) tribenzoic acid ligand, and DPP is a 4-(2,5-difluoro-4-bromophenyl) pyridine ligand. The zinc-based complex structure belongs to a triclinic system, a P-1 space group, the cell parameter is a, the axial angle alpha is 60.225(9)°, the axial angle beta is 73.437(8)°, the axial angle gamma is 84.579(7)°, the cell volume is V, and Z is 2. The zinc-based complex can be used for preparing adsorption materials, antibacterial materials, catalytic materials, photoelectric magnetic materials and drug carrier materials, belongs to a metal-organic framework structure, and is a composite functional porous material with great potential. The zinc-based complex can be applied to the field of low-carbon hydrocarbon gas separation.

The invention belongs to the technical field of photocatalysis and functional coordination chemistry, and particularly relates to a metal organic cage catalyst based on ligand engineering regulation and a method for photocatalytic synthesis of hydrogen peroxide in pure water. According to the invention, a tripyridine ligand containing pyridinium substituent groups is designed through a ligand engineering strategy, and the tripyridine ligand and zinc ions are self-assembled to form the metal organic cage catalyst with a tetrahedral structure. By introducing a pyridinium group into a ligand structure, the electron attraction capability of a system is enhanced, and an efficient charge transfer channel is formed. Active intermediates (such as hydroxyl free radicals and superoxide free radicals) are effectively stabilized by the confinement space of the cage body, and the decomposition reaction of hydrogen peroxide is inhibited. The structure can efficiently separate photo-induced electrons and holes under the illumination condition and promote the double-two-electron synergistic process of oxygen reduction reaction and water oxidation reaction, so that hydrogen peroxide is efficiently generated in a pure water system without a sacrificial agent.

The application belongs to the technical field of chemical industry and relates to a preparation method of a novel chiral bipyridine and application of the chiral bipyridine in catalytic reaction. Various benzyl bromides with 4,5-diazofluorene as a skeleton are reacted to generate a series of chiral bipyridine ligands, then under the participation of the ligands, indolines and quinoline nitrogen-containing heterocyclic compounds are reacted with pinacol diboronic acid under the catalysis of [IrOMe(COD)2] as a metal catalyst, and then a series of phenol compounds are obtained through oxidation of sodium perborate. The novel chiral bipyridine ligand developed by the method has the advantages of good site selectivity and excellent reaction yield without using strong acid and strong base in the process of C-H bond selective boronation.

This application belongs to the field of antibacterial pharmaceutical technology, specifically relating to a ruthenium-pyridine complex modified with bisimidazole, its preparation method, and its application. The structure of the bisimidazole-modified ruthenium-pyridine complex is shown in Formula I. This invention modifies the electron cloud distribution and targeting by introducing a bisimidazole group into the ruthenium polypyridine ligand. Utilizing the nucleophilic binding properties of bisimidazole and the spatial synergistic effect of the polypyridine ligand, it significantly enhances the interaction between bisimidazole and bacterial cell membrane phospholipids and virulence factors, thereby improving antibacterial activity and anti-biofilm properties, providing a new approach for developing novel and highly effective drugs against drug-resistant bacteria.

The application relates to a method for preparing a cyano borohydride pyridine metal complex, and the specific steps are as follows: a certain amount of transition metal salt is weighed and added into a container, a solvent is added, stirring is uniformly carried out, a pyridine ligand is added into the container, reaction is carried out at 20-80 DEG C for 0.5-6h, sodium cyano borohydride is added into the container, backflow is carried out at 20-80 DEG C for 2-6h, cooling is carried out, continuous stirring is carried out for 2-12h, filtering is carried out, the precipitated product is washed and dried, and the cyano borohydride pyridine metal complex is obtained. The metal complex is self-ignited when being contacted with a strong oxidant, has good ignition and combustion characteristics, and can be applied to the combustion field of solid fuel or solid propellant. The preparation method is simple and the conditions are mild.

The present invention relates to an organoruthenium compound raw material for a chemical deposition method. An organoruthenium compound is represented by the following Formula 1 in which a trimethylenemethane-based ligand (L1), and two carbonyl ligands and a ligand X coordinate to divalent ruthenium. In Formula 1, the trimethylenemethane-based ligand (L1) is represented by the following Formula 2. Besides, the ligand X is any one of an isocyanide ligand, a pyridine ligand, an amine ligand, an imidazole ligand, a pyridazine ligand, a pyrimidine ligand, and a pyrazine ligand.wherein a substituent R of the ligand L1 is hydrogen, or any one of an alkyl group, a cyclic alkyl group, an alkenyl group, an alkynyl group, and an amino group having a predetermined number of carbon atoms.

The invention provides toughened polyurethane based on dual non-covalent interaction as well as a preparation method and application thereof, and belongs to the technical field of supramolecular polymers, the preparation method comprises the following steps: preparing a monodentate pyridine ligand compound with a crown ether structure, and preparing polyurethane containing a tridentate pyridine ligand. Carrying out coordination reaction on the polyurethane containing the tridentate pyridine ligand and palladium acetate to obtain palladium coordinated polyurethane; the palladium-coordinated polyurethane reacts with a monodentate pyridine ligand compound with a crown ether structure to obtain the palladium-coordinated polyurethane with the crown ether structure, and then the palladium-coordinated polyurethane reacts with double-end-group secondary ammonium salt to obtain the toughening type polyurethane based on the dual non-covalent interaction. The toughened polyurethane disclosed by the invention simultaneously has two non-covalent interactions of subject-object recognition and metal coordination, so that the polyurethane can be toughened synergistically, and a polyurethane network is endowed with good dynamic property and mechanical property.

The present invention discloses a hydrophilic triphenylene-based metal-organic nickel octahedral cage and its preparation method and application. The general formula of the cage is: [Ni6L8(X) 12 , where X is a monovalent anion and L is a hydrophilic triphenylene-based tridentate pyridine ligand. The preparation method includes the following steps: (1) Using ethyl-substituted tribromotriphenylene, boronic acid ester and 3-bromo-5-ethoxyethyl pyridine as raw materials, tetrakis(triphenylphosphine)palladium as a catalyst, in an organic solvent, under alkaline conditions, under nitrogen protection, reacting at 80-100 °C for 12-24 h to obtain ligand L; (2) Taking ligand L and nickel salt and adding them to a mixed solvent of water and acetonitrile, and stirring for 3-6 hours. The hydrophilic triphenylene-based metal-organic nickel octahedral cage is used as a metal catalyst to efficiently and selectively catalyze the hydrodeuteration reduction reaction at room temperature to synthesize chemicals containing deuterium at specific positions.

Phosphino-quinoline-pyridine ligands and compositions that include complexes, the complexes including a phosphino-quinoline-pyridine ligand and a metal coordinated to the ligand are disclosed. Methods of oligomerization, such as methods of oligomerizing alpha-olefins, performed in the presence of a complex that includes a phosphino-quinoline-pyridine ligand are also disclosed.

The invention discloses a luminescent crystal material based on a carbazolyl pyridine ligand, a preparation method thereof and application of the luminescent crystal material in ratiometric fluorescence detection of trifluoroacetic acid, the luminescent coordination polymer crystal material [Cd (L) I2. DMAC] n is prepared based on a 2, 7-bis (pyridine-4-yl)-9H-carbazole ligand for the first time, the method is simple, the synthetic route is simple and easy to control, the product yield can reach 35.6%, and the preparation method is suitable for industrial production. The method is suitable for industrial production. Compared with a coordination polymer through fluorescence quenching detection, the material realizes the ratiometric fluorescence detection of TFA by the coordination polymer for the first time, the sensitivity is extremely high, the sensitivity of ratiometric fluorescence detection of water-phase TFA is 385% per pH unit, the detection limit is as low as 0.35 mu M, and the material has a wide application prospect.

The invention belongs to the technical field of new materials, and particularly relates to a preparation method and application of an Mn-based metal organic framework material Mn-dcbp. The material is constructed by Mn < 2 + > and 4, 4 '-dicarboxy-2, 2'-bipyridine ligand, has a three-dimensional network structure and comprises a one-dimensional zigzag channel, and a self-response corner bag structure is formed at the inflection point of the channel. The material is subjected to sub-angstrom-level structure self-adaptive adjustment after adsorbing acetylene, so that the interaction of a subject and an object is enhanced, and ultrahigh-density storage (1.02 g / mL), ultrafast diffusion rate (0.01863 s <-1 >) and high-selectivity separation (C2H2 / C2H4 adsorption ratio 21) of acetylene are realized. The material can be prepared on a large scale through a green and low-cost solvothermal method and a seed-assisted crystallization method, and has excellent thermal stability, water stability and cycle stability. The material can be widely applied to high-efficiency separation of acetylene / ethylene, high-density storage of acetylene and capture and purification of acetylene in industrial waste gas, and has a good industrial application prospect.

The application discloses a four-component metal organic cage based on perylene diimide and terphenyl as well as a preparation method and photocatalytic application thereof, and belongs to the technical field of supramolecular chemistry. The metal organic cage is based on a method of transition metal coordination driven self-assembly, inter-ligand shape complement strategy and molecular docking, and discloses a series of four-component metal organic cages based on perylene diimide and p-terphenyl pyridine ligands which are asymmetric in space structure. The functional integration of the pyridine ligands in the metal cage can realize the charge transfer in the multi-component metal organic cage, so that the application of photocatalytic oxidation reaction can be realized.

The present disclosure features organometallic materials and methods for electrical energy storage. For example, molecular redox-active bis(imino)pyridine ligands and Group 13 metal-bis(imino)pyridine complexes for use as Non-Aqueous Redox Flow Battery (NRFB) analytes are provided. Also provided are NRFBs and electrical energy storage systems comprising Group 13 metal-bis(imino)pyridine complexes as analytes.

The invention relates to a photoresponse porous liquid adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing a metal organic cage through a self-assembly process of transition metal salt and an isophthalic acid ligand; afterwards, an axial metal site outside the metal organic cage is modified by utilizing an aminopyridine ligand through a coordination effect, so that the metal organic cage with a light response characteristic is obtained and is used as a porous main body material; finally, phosphorus-based ionic liquid with a long alkyl chain at one end is selected as a steric hindrance solvent, the metal organic cage porous main body material is dissolved in the phosphorus-based ionic liquid, the photoresponse porous liquid adsorbent is prepared, and the mass percent of the porous main body material is 1%-9%. The blocking and exposure of the ionic liquid on the internal pores of the porous main body are further influenced by the conversion of the photoresponse molecular configuration under the illumination condition, the gas adsorption quantity is changed, the remote regulation and control of the material on the gas adsorption are realized, and the material can be applied to the photoresponse adsorption of carbon dioxide.