128 results about "Pyridine ligand" patented technology

The invention discloses a high strength and high toughness self-repairing thermoplastic polyurethane urea elastomer and a preparation method thereof. The self-repairing thermoplastic polyurethane ureaelastomer is synthesized by double chain extension of prepolymers generated from diisocyanate and polyether diols separately in the presence of 2,6-diaminopyridine and cysteamine. A pyridine ligand unit is introduced onto a main chain, and coordination bonds are formed between molecular chains through the coordination effect of metal ions, thereby forming interchain reversible molecular healing;at the same time, the coordination bonds act as dynamic crosslinking points and achieve the effects of limiting molecular chain slip and improving mechanical properties; a disulfide bond is introducedinto a macromolecular main chain through double chain extension, and the self-healing ability is improved in an association manner through a reversible exchange reaction of the main chain. The elastomer has the self-repairing efficiency being more than 85%, the tensile strength being not less than 8 MPa and the toughness being not less than 40 MJ/m<3>. The elastomer is capable of both improving mechanical properties and self-repairing performance, can maintain the integrity and functionality of materials against complex deformation, and has extremely high application value in the field of flexible electronic equipment.

The invention discloses a tridentate nitrogen ligand 2,6-diimine pyridine contained iron or cobalt complex and a preparation method thereof. The structural formula of the complex is shown in a formula I, wherein M is iron or cobalt, and R1 and R2 are selected from any one of hydrogen and alkyl. The preparation method is as follows: under anaerobic conditions, a ligand shown in a formula IV is reacted with FeCl2 4H2O or CoCl2 to obtain the complex shown in the formula I. The N ^ N ^ N ligand containing asymmetric 2,6-diimine pyridine ligand and iron metal complex is synthesized, and the metal complex is used for catalyzing an ethylene polymerization reaction, and shows high catalytic activity. The obtained polymer has a high molecular weight, the catalyst has strong tolerance to high temperature, for example, at a higher temperature (80 DEG C), the iron (II) complex shows high polymerization activity on ethylene, and the polymerization activity can reach 2.2*107g mol<-1> (Fe) h<-1>; and the metal complex has wide industrial application prospects. (Formula I) (Formula IV).

PCT No. PCT/EP96/03888 Sec. 371 Date Mar. 11, 1998 Sec. 102(e) Date Mar. 11, 1998 PCT Filed Sep. 4, 1996 PCT Pub. No. WO97/10054 PCT Pub. Date Mar. 20, 1997Olefins can be epoxidized using catalysts I where M is a metal of the 4th to 7th transition group of the Periodic Table of the Elements, L1 is an amine oxide, phosphine oxide, arsine oxide, pyridine N-oxide or pyridine ligand of the formula II, III, VII or VIII, L2 is a customary auxiliary ligand or a further ligand L1 or a free coordination site, X is oxo oxygen or an imido ligand, m is 1 or 2, and n is 1, 2 or 3.

The invention provides phosphorescent organometallic complexes. The complexes of the invention may be prepared as films further comprising a charge carrying host material may be used at an emissive layer in organic light emitting devices. In one embodiment, the complex is a hyper-branched organoiridium complex comprising a 2-phenylpuridine ligand wherein the phenyl ring or the pyridine ring contains 4 non-hydrogen substituents. In another embodiment, the complex is an organoiridium complex comprising a substituted 2-phenyl pyridine ligand, wherein at least one substituent contains a spiro group.

The invention belongs to the synthetic chemistry field, in particular to a synthesis process for ruthenium mixed-pyridine complex and derivative. Mixed-pyridine in ruthenium mixed-pyridine complex has two structures of (I) and (II), and the process comprises reacting ruthenium material and combined mixed-pyridine complex with various substituent position, complex kind (two teeth or three teeth, namely bipyridyl or terpyridyl material) and substituent property, and salt or water such as NCS, F, C1, Br, I and CN in a sealed reaction device which can be heated up and pressurized in one step or several steps for 0.5-48 hours under the temperature of 50-300 DEG C, thereby obtaining target product. The invention provides a high pressure synthesis process, which does not need a condensing reflux device, continuous inactive gas supply and inert atmosphere protection and has simple process. The process can increase reaction temperature over the boiling temperature of reaction solution in necessary, namely the boiling temperature relative to constant pressure, and has high reaction speed rate.

A process for the production of alpha-olefins comprising reacting ethylene under oligomerization conditions in the presence of a mixture comprising: (a) a metal salt based on Fe(II), Fe(III), Co(II) or Co(III); (b) a pyridine bis-imine ligand; and (c) a co-catalyst which is the reaction product of water with one or more organometallic aluminium compounds, wherein the one or more organometallic aluminium compounds is selected from: (i) βδ-branched compounds of formula (I):

Al(CH₂—CR¹R²—CH₂—CR⁴R⁵R⁶)_xR³_yH_z;

(ii) βγ-branched compounds of formula (II)

Al(CH₂—CR¹R²—CR⁴R⁵R⁶)_xR³_yH_z

and mixtures thereof; wherein when the metal salt and the bis-arylimine pyridine ligand are mixed together they are soluble in aliphatic or aromatic hydrocarbon solvent.

Mixed bis-imine pyridine ligands of formula (I), wherein Z₁, which is different from Z₂, is an optionally substituted aryl group; and Z₂ comprises an optionally substituted heterohydrocarbyl moiety, or an optionally substituted aryl group in combination with a metal, said optionally substituted aryl group being π-co-ordinated to the metal;

mixed bis-imine pyridine complexes comprising a ligand of formula (I); mixed ionic bis-imine pyridine complexes comprising a ligand of formula (I); and processes for the production of alpha olefins from ethylene, using said complexes.

The invention relates to a sensing material for detecting the halogenated hydrocarbon, which is characterized in that the center is the divalent platinum; the two ligands coordinated with the platinum are 2-phenylpyridine; and simultaneously, the phenyl is provided with the aryl substituent. The sensing material comprises platinum, 2-phenylpyridine ligands and aryl on the phenyl or oligomer and polymer further constructed by aryl. The aryl comprises the further constructed oligomer or polymer as well as ramification of aryl. The detection method is realized through detecting the change of the fluorescence intensity of the luminescent material by using fluorescence means. The provided luminescent material is applicable to the detection of the volatile halogenated hydrocarbon.

A transition metal complex which is a bis-arylimine pyridine MX_n complex or a [bis-arylimine pyridine MX_p⁺][NC⁻]_q complex comprising a bis-arylimine pyridine ligand and M is a transition metal atom; n matches the formal oxidation state of the transition metal atom M; X is halide, optionally substituted hydrocarbyl, alkoxide, amide, or hydride; NC− is a non-coordinating anion; and p+q matches the formal oxidation state of the transition metal atom M. The transition metal complexes of the present invention, their complexes with non-coordinating anions and catalyst systems containing such complexes have good solubility in non-polar media and chemically inert non-polar solvents especially aromatic hydrocarbon solvents. The catalyst systems can be used for a wide range of (co-)oligomerization, polymerization and dimerization reactions.

The invention relates to a novel rare earth ternary complex. The rare earth complex is a rare earth luminescent material with high performance; and the molecular formula of the complex is Eu(BTA)3(PBO)[BTA is benzoyltrifluoroacetone, and PBO is 2-(2-benzoxazole) pyridine]. The compound is prepared by performing complexing reaction on nitrate of tervalence rare earth ion Eu<3+> and three-time equivalent benzoyltrifluoroacetone ligand and one-time equivalent 2-(2-benzoxazole) pyridine ligand. The preparation method comprises the following steps of: reacting the rare earth nitrite, benzoyltrifluoroacetone and 2-(2-benzoxazole) pyridine in an acetonitrile solvent according to a chemical metering ratio of 1: 3: 1; dipping a sodium hydroxide solution to regulate a PH value; and rotationally evaporating, washing and drying to obtain a product. The rare earth complex is good in dissolubility, high in luminescence efficiency and good in heat stability, and can be applied to red light luminescent materials in the field of photoluminescence or electroluminescence.

The invention discloses a yellow phosphorescent tetrahedral cuprous complex luminescent material and preparation method thereof. The phosphorescent complex disclosed by the invention is obtained through the complexation of a cuprous salt and ligands and has the molecular structure of Cu(POP)(4-PBO)(CH3CN)(PF6), wherein POP and 4-PBO are electroneutral ligands, namely bis(2-diphenyl phosphorus phenyl) ether and 4-(2-benzoxazolyl)pyridine. The complex has the advantages of easiness in micromolecule purification and high luminescence efficiency and has the advantage of being easily dissolved by organic solvents; the material is directly obtained through the stepped mixing reaction of Cu(CH3CN)4PF6 and a solution of two ligands and has the advantages that the process is simple and convenient, the equipment is simple, the raw materials are easily obtained, the cost is low and the like; the material can serve as a photoluminescent yellow material and can also serve as a luminescent-layer phosphorescent material, consisting of multiple layers of organic materials, of an electroluminescent device.

The invention discloses a preparation method of a nitrogen or metal doped carbon material. The preparation method comprises following steps: 1, 2,6-diacetylpyridine and two or more than two amino monomers are reacted in a solvent in the presence of a catalyst under protection of an insert gas so as to obtain an imido pyridine ligand polymer; 2, the imido pyridine ligand polymer is subjected to thermal cracking under protection of the insert gas so as to obtain a nitrogen-doped carbon material, and post-treatment is carried out so as to obtain a finished product. The weight of nitrogen accounts for 0.5 to 10% of that of the nitrogen or metal doped carbon material; product yield after polymer thermal cracking ranges from 29 to 57%; product BET is about 300m<2>/g to 1500m<2>/g; the capacitance of the nitrogen or metal doped carbon material is high when the nitrogen or metal doped carbon material is used for preparing super-capacitors, and the Lithium storage performance and the cycling stability of the nitrogen or metal doped carbon material are excellent when the nitrogen or metal doped carbon material is taken as a lithium battery electrode material.

The invention discloses a 2,6-diene amine pyridine binuclear cobalt complex catalyst as well as a preparation method and application of the 2,6-diene amine pyridine binuclear cobalt complex catalyst. The complex has a structural formula shown in formula I, wherein, R1 is selected from at least one of methyl, ethyl and isopropyl; R2 is methyl or hydrogen; and R3 is methyl, ethyl or isopropyl. The preparation method comprises the following step: reacting a ligand shown in formula V with CoCl2 under conditions of room temperature to obtain the complex shown as formula I. The complex containing a 2,6-diene amine pyridine ligand and a cobalt metal is designed and synthesized by the method provided by the invention; the complex is capable of catalyzing vinyl polymerization in the presence of cocatalysts including methylaluminoxane and modified methylaluminoxane to obtain a polymer with high molecular weight, and meanwhile has very high activity which reaches as high as 10<7>g.mol<-1>(M).h<-1> and broad industrial application prospects. (img file='DDA0000455387120000011. TIF'wi='496'he='984'/).

The invention belongs to the technical field of preparation of fluoroalkyl-substituted aromatic hydrocarbons, and in particular relates to a preparation method of a trifluoroethyl-substituted aromatic compound. The method takes a trifluoroethyl source reagent (I) and arylboronic acid Ar-B (OH) 2 (II) as raw materials, adopts a cheap and easily available nickel catalyst and pyridine ligands as a catalytic system, and efficiently introduces trifluoroethyl to an aromatic ring group, so that the trifluoroethyl-substituted aromatic compound can be obtained. According to the method, mild reaction conditions, high operability and low raw material cost are achieved, reaction scale is easy to expand, and product separation is simple, so the method has the advantages of being suitable for industrial production.

The invention discloses a 2,6-diimine pyridinocycloheptane iron and cobalt complex catalyst and a preparation method therefor and an application thereof. The structural formula of the complex is represented by a formula I, wherein R is selected from at least one of methyl, ethyl or isopropyl; R1 is selected from methyl or hydrogen; M represents Fe or Co. The preparation method comprises the step of: carrying out a reaction on a ligand as shown in a formula V and FeCl2.4H2O or CoCl2 to obtain a complex represented by the formula I under a room temperature condition. The invention designs and synthesizes a complex which contains a 2,6-dienamine pyridine ligand and iron and cobalt metals. The series of complexes, under the action of a co-catalyst methylaluminoxane or modified methylaluminoxane, can better catalyze vinyl polymerization to obtain a polymer with high molecular weight. Meanwhile, the activity of the catalyst is further high, and the highest activities respectively reach 1.56*10<7>/mol(Fe)/h and 2.09*10<7>g/mol(Co)/h. The catalyst has a wide industrial prospect. The formula is as shown in the description, wherein Ar represents a formula shown in the description.

A theme of the present invention is to provide a new transition metal complex, useful as a photosensitizer dye for a photoelectric conversion element having an excellent durability and a high photoelectric conversion characteristic. The present invention provides a bivalent transition metal complex constituted of (i) a bipyridyl polyacidic ligand, such as a dicarboxybipyridyl (dcbpy) ligand, as an adsorption site for adsorption onto titanium dioxide particle surfaces; (ii) a ligand, selected from the group consisting of an isothiocyanato group, an isocyanato group, and an isoselenocyanato group and enabling absorption and excitation at long wavelengths and charge transfer; and (iii) a bipyridyl (bpy) ligand, having an alkyl group or an alkoxy group, preferably a long-chain alkyl group, and a conjugately bonded thienylvinylene group, aminophenylenevinylene group, et., and improving an absorbance of a transition metal complex and imparting stability against nucleophile to a sensitizer dye that improves an absorption bathochromic effect.

The invention discloses a mixed cuprous complex luminescent material with yellowish green phosphorescence and a preparation method thereof. The phosphorescence complex is prepared by complexing cuprous salt and ligands. The molecular structure is Cu(Xantphos)(4-PBO)(CH3CN)(PF6), wherein the Xantphos and 4-PBO are electrically-neutral ligands 4,5-bisdiphenylphosphino-9,9-dimethylxanthene and 4-(2-benzooxazolyl)pyridine. The complex has the advantages of easy purification of small molecules and high luminescence efficiency, and can be easily dissolved by organic solvents. The material is prepared by directly mixing and reacting Cu(CH3CN)4PF6 with the two ligand solutions by multiple steps; and the method has the advantages of simple technique, simple equipment, accessible raw materials, low cost and the like. The material can be used as a photoluminescent yellow-light material, and can also be used as a luminescent layer phosphorescence material in an electroluminescent device composed of a multilayer organic material.

The invention relates to an organo-boron group-containing phosphorescent organic electroluminescent material and a preparation method thereof. The synthetic route includes: (1) synthesis of an organo-boron group-containing 2-phenyl pyridine organic ligand; (2) synthesis of a metal iridium dimer complex; and (3) synthesis of organic boron group high efficiency red, green and blue light phosphorescent organic electroluminescent phosphorescent materials of the organo-boron group. By introducing the organo-boron group into the traditional 2-phenyl pyridine ligand, the materials makes use of the special electronic properties of the organo-boron group to adjust the luminescent properties of the electrophosphorescence material, so that the color purity and luminous efficiency of the red light, green light and blue light organic electrophosphorescence materials can be well balanced.

The invention discloses a novel anthraquinone polypyridine ligand and a preparation method thereof. The anthraquinone polypyridine ligand is simple in synthetic method and can be further used for preparing binuclear ruthenium complexes. The prepared anthraquinone polypyridine binuclear ruthenium complexes as shown in a general formula of [(bpy) 2Ru (X-biipad) Ru (bpy) 2] (ClO4)4 have the advantages of stable structure and high water solubility, can effectively inhibit the migration of tumor cells and cell invasion according to the results of cell wound scratch assay and cell invasion assay, and can be used for preparing novel antineoplastic drugs for inhibiting tumor metastasis.

The present invention provides new bi- and polypyridine ligands of ruthenium dyes. The invention also provides solar cells, in particular dye-sensitized solar cells comprising the dyes.

Formula(I):