116results about How to "Increase the degree of conjugation" patented technology

The invention discloses a benzodithiophene polymer, its preparation method, a semiconductor composition containing it, and a solar cell using it. The benzodithiophene polymer has a structure represented by a formula shown in the specification; and in the formula, A1, A2, A3, B1, B2 and B3 are respectively independently selected from hydrogen, C1-C30 alkyl groups, C1-C30 alkyloxy groups, cyan groups, nitro groups, ester groups, aryl groups with four following substituent groups RX, heteroaryl groups with four following substituent groups RX, aralkyl groups with four following substituent groups RX, halogen atoms, halogenated alkyl groups, heteroalkyl groups, alkenyl groups and alkynyl groups; the substituent groups RX comprise hydrogen, C1-C30 alkyl groups, C1-C30 alkyloxy groups, ester groups, sulfonyl groups or fluorinated alkyl groups. The introduction of a thiophene side chain to benzodithiophene makes the obtained polymer molecule have a high conjugate degree, so it is in favor of improving the carrier mobility of the above polymer material.

The invention provides a compound in a formula (I) structure and a polymer in a formula (II) structure. A preparation method of the polymer in the formula (II) structure provided by the invention is characterized in that under the inert gas protection, the compound in the formula (I) structure and polymerization monomers generate the polymer under the effects of catalysts and auxiliary ligands. The invention also provides an organic thin film transistor and a polymer semiconductor material consisting of the polymer, wherein a charge transmission layer of the organic thin film transistor is made of the polymer semiconductor material. The polymer in the formula (II) structure has a good linear structure, and the conjugate degree of the polymer is improved, so the polymer semiconductor material formed by the polymer is enabled to have a better migration rate. The polymer of the compound based on N and S two-kind heteroatoms provided by the invention has good solubility in organic solvents.

The invention relates to a preparation method for a long-wavelength fluorescence-enhanced fluorescence probe capable of fast recognizing H2S in an aqueous medium and application of the fluorescence probe in detection of H2S. The molecular structural formula is as shown in the specification. The fluorescence probe has the advantages of high selectivity, high anti-jamming capability, high sensitivity, application in fluorescence detection for H2S in environmental and biological samples and wide application prospect.

The invention discloses a thiosemicarbazone 7-umbelliferone-8-aldehyde probe reagent which is prepared by enabling 7-hydroxyl-8-aldehyde coumarin and thiosemicarbazone to react. By adopting a probe disclosed by the invention, selective recognition of metal ions and anion can be achieved simultaneously, specific ions can be rapidly detected through visual colorimetric, the probe can be also applied to specific ion imaging detection in living cells, has double-mode detection with fluorescence enhancement and proportioning absorption, is relatively excellent in detection sensitivity and accuracy, has the advantages of high sensitivity, high selectivity, high yield and the like, and moreover is beneficial to quantitative and qualitative analysis on complex micro systems.

The invention discloses a nitroreductase responsive hypoxic probe compound, preparation and application thereof, and relates to a preparation method of a fluorescent probe compound (I) capable of responding to nitroreductase, and application of the fluorescent probe compound (I) in hypoxia analysis and imaging. The fluorescent probe disclosed by the invention can realize high-sensitivity and high-specificity response to tumor microenvironment hypoxia related nitroreductase, is prepared through a condensation reaction, and has the significantly increased conjugation degree of molecules, so thatthe absorption and fluorescence emission wavelengths have obvious red shift compared with coumarin, rhodamine and other dyes, and when the hypoxic probe is used for analysis and imaging application,the interference is small; and the probe is constructed through an intramolecular charge transfer mechanism (ICT), is a signal enhanced probe and has a small background signal.

A process for chemically preparing the high-electroconductivity polypyrrole film on the surface of insulating material includes such steps as using silane coupling agent to modify the surface of insulating material, drying in air, immersing in pyrrole solution, immersing the doping agent contained aqueous solution of oxidant, polymerizing reaction and drying.

The invention provides a soluble polythiophene derivative with coplanar groups. The coplanar groups take thiofuran-p-phenylene group- thiofuran as the main composition, thus being capable of enhancing the conjugate degree in molecules and helping the Pi-Pi acting force and further improving the carrier mobility of materials. The invention also relates to applications of the soluble polythiophene derivative on optelectronic components such as an organic thin film transistor, an organic light emitting diode and an organic solar cell and the like.

The invention discloses serial compounds with triptycene as a framework and in bridge connection with metalloporphyrin through pyrene tetrone and a preparation method therefor, and belongs to the photoelectric conversion material field. The compound molecular formula is C320H348N24M3. The structural formula is shown in the specification. Triptycene is subjected to nitration by utilization of concentrated nitric acid, and 2,6,14-trinitro-triptycene; after reduction, a reaction with propionic anhydride, p-toluenesulfonic acid and potassium nitrate is carried out, then sodium hydroxide is added, hydrolysis is carried out, and 2,6,14-triamino-3,7,15-trinitro-triptycene is prepared; after reduction of stannous chloride, ethanol and concentrated hydrochloric acid, 2,3,6,7,14,15-hexaamino triptycene hexachloro hydrochloride. 3,5-bis-tert-butyl benzaldehyde and pyrrole are reacted and porphyrin is prepared; porphyrin is reacted with cupric acetate and cupric nitrate solutions and nitro copper porphyrin is prepared; 4-amino-1,2,4-triazole is added, a reaction is carried out, and an amino substituted nitro copper porphyrin is prepared; after reduction, diamino copper porphyrin is prepared. 2,3,6,7,14,15-hexaamino triptycene hexachloro hydrochloride and 2,7-bis-tert-butyl pyrene-4,5,9,10- tetrone are reacted, and a compound 1 is prepared; the compound 1 is reacted with the diamino copper porphyrin, and a compound 2 is prepared; after metal removal, a reaction with a methanol solution of corresponding metal acetate is carried out, and the compound is prepared.

The invention discloses thiophene polycyclic organic semiconductor material synthesis based on pyrene and belongs to the field of photoelectric conversion materials. The molecular formulas of compounds are C<76>H<86>N<4>S<4> and C<62>H<80>N<2>S<2>, and the structural formula can be seen in the Application of the invention. A synthesis method comprises the steps of making the pyrene react with liquid bromine, and obtaining 1,3,6,8-tetrabromo pyrene; making the 1,3,6,8-tetrabromo pyrene react with 1-octyne, obtaining a product, and then using palladium/carbon for conducting catalytic reaction,and obtaining 1,3,6,8-quadri-octane pyrene; using ruthenium trichloride for catalyzing the 1,3,6,8-quadri-octane pyrene, adjusting the using amount of sodium periodate, and obtaining tetrone and diketone; then making o-phenylenediamine and sulfoxide chloride react with liquid bromine, and obtaining 4,7-dibromo-2,1,3-diazosulfide; making thiophene react with thiadiazole, and obtaining diazosulfide; then making o-phenylenediamine and paratoluensulfonyl chloride react with liquid bromine, subsequently, making the mixture react with concentrated sulfuric acid, then making the mixture react with thionyl chloride, and obtaining 5,6-dibromo-2,1,3-diazosulfide; conducting operation same with the reaction process, and obtaining another type of diazosulfide; making a thiadiazole product to be subjected to ring-opening reaction, and obtaining two types of o-phenylenediamine products; making the tetrone and the diketone react with the two types of o-phenylenediamine respectively, and obtaining the compounds.

The invention relates to a copolymer donor material for an optically active layer of a polymer solar cell (PSC) and a preparation method of the copolymer donor material. The structural formula of the compound is shown in the specification, wherein n ranges from 3 to 10. According to the method, synthesis steps are simple and mild, raw materials for synthesis are cheap, and preparation cost is low. The obtained copolymer is good in thermal stability (namely half decomposing temperature is higher than 300 DEG C), is good in photoelectric property and dissolving property, and is suitable for being used as the active layer material of the PSC; as the copolymer donor material has a low band gap (1.85eV), electronic transition energy is lowered while the light absorption scope of the material is enlarged to 200-700nm; as the material has a large rigid conjugate structure, the intensity of intramolecular charge transfer (ICT) is enhanced while intermolecular pi-pi accumulation in a solid structure is increased, and thus the copolymer donor material can replace a traditional material for the optically active layer of the PSC.

The invention discloses arylamine tetradentate cyclometalated platinum complex near-infrared electroluminescent materials as well as preparation and application thereof. The cyclometalated platinum complexes contain ligands comprising dual donor units (triphenylamine fluorene or carbazole) and dual C^N tetradentate coordination structures; the donor units in cyclometalated complex molecules can further enlarge a conjugated system of the complexes, red shift of the emission spectra of the complexes is realized, and the complexes have a near-infrared emission characteristic. Efficient near-infrared emission can be realized when the cyclometalated platinum complexes are applied to preparation of polymer electroluminescent devices.

The invention relates to a fluorescence spectra type rapid detection method of a phthalate substance in a paper packing material. The method comprises the following specific steps: 1) preparing phthalate substance as a standard substance; dissolving the standard substance with a solvent to obtain standard solutions with different concentration; dehydrating the standard solutions through a dehydrating agent to obtain standard solutions to be detected; scanning emission spectra of the standard solutions to be detected through a fluorescence spectra analyzer; and creating a standard curve; and 2)processing the paper packing material through the solvent to obtain extracting liquid; dehydrating the extracting liquid through the dehydrating agent to obtain extracting liquid to be detected; scanning the emission spectra of the extracting liquid to be detected through the fluorescence spectra analyzer; and then quantitatively analyzing the fluorescence signal intensity by an external standardmethod. The method has the advantages of being simple and convenient to operate, high in sensitivity, high in interference resistance, quick to detect, green, environmentally friendly, and suitable for rapid screening of massive samples.

The invention discloses rubber antioxidant-reduced and modified graphene oxide, as well as a preparation method and application thereof. According to the method, graphene oxide can be reduced and modified only at the same time through one-step reaction, and the method specifically comprises the following steps: mixing the graphene oxide with water, and carrying out ultrasonic stripping, thereby obtaining graphene oxide aqueous dispersion; mixing a rubber adjuvant solution with the graphene oxide aqueous dispersion, and carrying out heating stirring, thereby obtaining the rubber antioxidant-modified graphene oxide. According to the preparation method, a reducing agent is nontoxic and environmentally-friendly; the method is simple and feasible; the reaction conditions are mild; the obtained graphene oxide is low in oxygen-containing functional group content and high in conjugation degree; part of an antioxidant is grafted to the surface of graphene, so that uniform dispersion of the graphene in rubber can be promoted, and the interface bonding effect on a rubber matrix can be enhanced; furthermore, migration and volatilization of the antioxidant can be avoided, and the interaction efficiency of the antioxidant is improved; therefore, the performance of a rubber/graphene composite material is improved. A new opportunity and a new way for green and macroscopic quantity preparation of the graphene and obtaining of a high-performance rubber/graphene nano composite material are supplied.

The invention relates to a compound, and a preparation method and application thereof, in particular to a pyrrole-containing triphenylamine conjugated schiff base compound, and a preparation method and application thereof, and aims to solve the problem that the conventional organic electrochromic material is complex in synthetic method and high in synthetic cost. The structural formula of the pyrrole-containing triphenylamine conjugated schiff base compound is shown in the specification. The preparation method comprises the following steps: firstly, preparing a triphenylamine derivative ethanol solution; secondly, dropwise adding a pyrrole-2-carboxaldehyde ethanol solution in the triphenylamine derivative ethanol solution to obtain a reactant; thirdly, adding the reactant in a small polar organic solvent to precipitate to obtain a product I, performing suction filtration on the product I n to obtain a product II, purifying the product II by an Al2O3 chromatographic column to obtain a product III, and drying the product III. The pyrrole-containing triphenylamine conjugated schiff base compound is taken as an off-color material to be applied in electrochromic display material, acidichromism display material, acid sensing material, hole-transport material or anti-counterfeit material and camouflage material. The pyrrole-containing triphenylamine conjugated schiff base compound can be obtained.

The invention discloses a polymer solar battery comprising an anode, an anode modified layer, an active layer, a cathode modified layer and a cathode, wherein the component of the active layer is a donor macromolecule and receptor PCBM composite membrane with a bulk heterojunction structure. Compared with the donor macromolecule with a triphenylamine structure, which is mainly adopted by an active layer before, the molecule of the polymer solar battery has the outstanding advantages that the twisted triphenylamine is changed into a planar molecule; macromolecule energy gap Eg is reduced; absorption red shift of a visible region can be matched with solar spectrum well; short-circuit current density is increased, the rigidity of a main chain is enhanced; the conjugate degree is increased; the migration ratio of current carriers is increased; the compatibility to the receptor molecule PC71BM is expected to be improved; and fill factors (FF) are increased, so that the photoelectric conversion efficiency is improved. The molecules of the invention are easy to synthesize, the raw materials are low in price and easy to obtain, and the preparation cost is low.

The invention relates to a yellow-light carbon dot with high light and heat stability, which is a carbon dot solution obtained by taking trimesic acid as a carbon source and o-phenylenediamine as a nitrogen source and carrying out solvothermal reaction in absolute ethyl alcohol. The yellow-light carbon dots prepared by the invention have bright yellow light emission and high light stability and thermal stability. The yellow-light carbon dot fluorescent film can be obtained by mixing and curing the yellow-light carbon dots and KH-792, can be used for preparing a high-energy white light LD device, and can be compounded with 450nm blue light LD to realize pure white light laser illumination.

The invention relates to a ratio type probe for detecting mercury ions and a preparation method and application thereof. Specifically, the invention provides a probe for detecting mercury ions, which is simple and convenient to operate and high in sensitivity. The name of the probe is 7-diethylamino-3-(3-(7-diethylamino) coumarin)-3-oxopropenyl quinoline-2-ketone, and the probe is called QCT-O for short. The QCT-O is obtained by taking 7-diethylamino-2-oxo-1, 2-dihydroquinoline-3-formaldehyde and 7-diethylaminocoumarin-3-ethanone as raw materials, and carrying out a reaction under the action of a catalyst. The probe has the advantages of fast response to mercury ions, strong selectivity and high sensitivity. In the presence of mercury ions, the color of the probe solution changes from red to yellow (under sunlight), and changes from red fluorescence to blue-green fluorescence (under an ultraviolet lamp); the absorption peak disappears at the position of 500 nm, and new absorption peaks appear at the positions of 380 nm and 440 nm; the fluorescence intensity obviously changes at the wavelength of 650 nm, the absorption and emission response intensities linearly changes with the mercury ion concentration, and the lowest detection limits are 2.62 * 10 <-8 > mol/L and 4.37 * 10 <-8 > mol/L respectively.

The invention relates to a conjugated polymer electron donor material of a polymer solar cell blended active layer and a preparation method of the conjugated polymer electron donor material. The structure general formula of the polymer of the material is shown in the description, wherein in the formula, R1 is C2H5-C12H25 alkyl, R2 is OC2H5-OC18H37 alkoxy, Ar is provided with an electrondrawing group and an electron-donating group, and n is an integer from 3 to 100. According to the method, synthesis is easy, and raw materials are low in price. The obtained polymer has good heat stability (the decomposition temperature reaches 350 DEG C) and very good solubility and hypocrystalline film-forming performance; the absorption range (300-1,000 micons) of the material to sunshine is enlarged by low optical band gaps (1.65 eV); the rigid conjugated structure of the material is beneficial to enhancing intramolecular charge transfer strength and the polymer solid phase intermolecular pi-pi accumulation effect, and the polymer solar cell blended active electron donor material has potential.

The invention relates to design and synthesis of a new fluorene high polymer with high conjugated degree and good flexibility, and the fluorene high polymer is prepared by a Heck reaction method. The synthetic method comprises the following steps of: performing polyreaction on 2,7-dibromofluorene and p-divinyl benzene, and based on the character that the 9-position C of fluorene is active, hydrochloride of 3-dimethyl amido-propyl chloride is substituted by hydrogen to obtain derivatives of fluorene containing branched chains. The conjugated polyfluorene provided by the invention has good heat stability, good blue light performance and stable electric conductivity of the conjugated polyfluorene are maximally showed, and can be used in the fields of organic light-emitting diodes, field-effect transistors, electromagnetic shielding, metal anticorrosion, all-plastic photovoltaic cells, light-emitting chemical cells and the like.

The invention belongs to the field of conjugated polymer materials, and in particular relates to a conjugated polymer material containing pyrrole indolodithiapentalene-dithieno benzothiadiazole. The material has a structural formula shown as P, wherein R1 represents C1-C16 alkyl, R2 and R3 represent H or C1-C16 alkyl, and n is an integer between 5-60. The conjugated polymer material containing pyrrole indolodithiapentalene-dithieno benzothiadiazole has excellent carrier mobility, lower energy gap and wider luminous absorption range, and excellent solubility and processability. The invention also provides the preparation method and application of the conjugated polymer material containing pyrrole indolodithiapentalene-dithieno benzothiadiazole to solar cell device, organic electroluminescent device or organic field effect transistor device.

The invention provides a catalyst composition for ethylene oligomerization. The catalyst composition comprises a ligand compound, namely diphenylmethylene (cyclopentadiene) (9-fluorenyl) zirconium dichloride, a transition metal compound and an aluminum alkyl cocatalyst. The metal organic ligand dibenzylidene (cyclopentadiene) (9-fluorenyl) zirconium dichloride is used as a ligand of an ethylene tetramerization catalyst, can effectively form a bimetallic center in the catalysis process to improve the selectivity of 1-octene, and can effectively inhibit the generation of a polyethylene byproduct.

Belonging to the field of photoelectric materials, the invention discloses a benzothiadiazole asymmetric organic small molecular photovoltaic material, a preparation method and application thereof. The D-Pi-A-A' type asymmetric molecule involved in the invention adopts benzothiadiazole as unit A, takes triphenylamine as unit D, employs phenyl, styryl, 2-cyano-styryl and phenylacetylene as Pi connecting bond respectively, and uses biscyanovinyl as the A' end group. In addition, different bridged bonds and the A' end group synergistically strengthen the ICT effect and reduce the HOMO energy level of the molecule. The 2-cyano-styryl connecting bond broadens the molecular absorption range. The introduction of phenyl or 2-cyano-styryl can reduce the HOMO energy level of the molecule, and Voc can exceed 1.0V. The PCE of the synthetic material is up to 2.43%. The compound has a clear structure, good solubility and film-forming properties, and has the potential of serving as an efficient asymmetric organic small molecular donor photovoltaic material.

The invention provides a 9-phenyl-carbazole-based thiophene derivative as shown in a formula (I) as well as preparation and application of the 9-phenyl-carbazole-based thiophene derivative. According to the thiophene derivative based on 9-phenyl-carbazole, thiophene is used as a peripheral group, 9-phenyl-carbazole is used as a central core, compared with a thiophene monomer, the thiophene derivative based on 9-phenyl-carbazole shows a larger conjugate length, and the redox potential of thiophene is greatly reduced, so that a corresponding polymer film is obtained through electrochemical polymerization; the reversible color change from bright yellow to blue can be realized under different voltages, the good electrochromic performance is shown, and the huge application prospect is shown in the fields of electronic tags and electronic paper.

The invention discloses an imidazole substituted spirofluorene compound and applications thereof, and discloses a compound represented by the following general formula defined in the specification, wherein X<1>-X<4> are selected from CR4 or N, R<4> is selected from hydrogen, C1-C10 alkyl, substituted or unsubstituted C6-C15 aryl and substituted or unsubstituted C3-C15 heteroaryl, R<1>-R<3> are selected from hydrogen, C1-C10 alkyl, substituted or unsubstituted C6-C15 aryl and substituted or unsubstituted C3-C15 heteroaryl, R<1>-R<3> are respectively and independently fused to a linked benzene ring to form C9-C30 aryl or heteroaryl, m and n are integers of 0-4, p is an integer of 0-3, L<1> and L<2> are selected from single bonds, substituted or unsubstituted C6-C30 arylene and substituted orunsubstituted C3-C30 heteroarylene, and Ar<1> and Ar<2> are selected from hydrogen, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl. According to the invention, with the application of the imidazole substituted spirofluorene compound as the luminescent material in an OLED device or an electron transport material, the compound shows excellent device performance and excellent stability. The invention further discloses an organic light-emitting device adopting the compound with the general formula.

The invention provides a benzothiazole compound probe, which can be reacted with HBrO to generate a cyclo-sulfilimine bond, thus increasing the conjugation degree of the reaction system and making a red shift on the fluorescence intensity of the reaction system by 137 nm and a change on fluorescence intensity ratio by 234 times. The probe can selectively recognize the HBrO without interference byother active oxygen substances and metal ions. Besides, the probe has advantages of short responding time and high sensitivity for detecting the HBrO and can be used for measurement of content of theHBrO. In addition, by researching the influence of pH value on measurement of the HBrO by the fluorescent probe, the fluorescence intensity ratio (I580/I447) of a probe blank solution to a solution with addition of HBrO is hardly changed along with change of pH value in the range of pH 2.0-12.0, so that it is proved that the pH has no obvious influence on the fluorescence intensity ratio. Withoutaddition of HBrO to the probe, a cell has strong fluorescence of blue pathway and weak fluorescence of red pathway, and the fluorescence is hardly to be seen. After the HBrO is added, the cell has weakened fluorescence of the blue pathway and enhanced fluorescence of the red pathway.