31 results about "Dithiane" patented technology

The application relates to the field of photoelectric technology, and discloses a conjugated polymer thin film and a preparation method and application thereof. In the presence of a first solvent and a first catalyst, ternary copolymerization is carried out on (4,8-bis(5-(2-ethylhexyl)-4-fluorothiophenyl)benzo[1,2-b:4,5-b']dithiophenyl)bis(trimethyl tin), 1,3-bis(5-bromothiophene-2-yl)-5,7-bis(2-ethylhexyl)benzo[1,2-c:4,5-c']dithiophene-4,8-dione and a monomer shown in formula I, so as to obtain a ternary conjugated polymer; the obtained ternary conjugated polymer, a second solvent, a crosslinking agent and a second catalyst are blended to form a film, and annealing is carried out to obtain the conjugated polymer thin film. The conjugated polymer thin film can be used as a light absorption layer to prepare an organic electronic device. The conjugated polymer thin film obtained by the method has significantly improved mechanical performance on the basis of ensuring photoelectric performance; the in-situ crosslinking strategy is adopted, solution processing performance is ensured, the operation is simple, the controllability of the polymer structure is high, and batch repeatability is high.

The invention belongs to the field of new materials, and particularly relates to a benzoxazine phenoxazine modified dithienyl ethylene derivative as well as a preparation method and application of the benzoxazine phenoxazine modified dithienyl ethylene derivative. The invention provides a full visible light regulated benzoxazine phenoxazine conjugate modified dithienyl ethylene molecular switch, the photochromic degree of the molecular switch is the same as the effect under ultraviolet irradiation when the molecular switch drives a ring-closing reaction through visible light, and the molecular switch has high visible light responsiveness and light isomerization conversion rate.

An agent containing at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl)ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide is effective for masking an unpleasant smell and for making oral products in which an unpleasant smell is masked.

The application provides a continuous turbulent tubular reactor for preparing 2,5-dihydroxy-1,4-dithiane, relates to the technical equipment field of organic synthesis, and comprises a cylindrical reaction cavity, a shell coaxially fixed outside the reaction cavity, a closed annular cooling cavity left in the middle, a stirring shaft connected at both ends of the shell, a driving motor connected at one side of the stirring shaft, staggered conical protrusions fixed to the outer wall of the stirring shaft and continuous spiral blades fixed to the conical protrusions, and a temperature sensor arranged in the reaction cavity. The application forms a fluid turbulent reaction field through the composite stirring structure of the spiral blades and the conical protrusions, forms a double-channel cooling mode through the cooling cavity and the cooling channel, and can solve the problems of many impurities, low efficiency and high cost in the process of preparing 2,5-dihydroxy-1,4-dithiane in the prior art.

To provide a masking agent for unpleasant odors derived from plants, in particular a grassy odor of soybean and an unpleasant odor derived from fats and oils of processed meat products (such as a hexanal odor), a method for masking unpleasant odors using the compound, and a method for producing an oral product in which unpleasant odors are masked.SOLUTION: The present invention provides an unpleasant-odor masking agent for oral products which contains at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl) ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide.SELECTED DRAWING: None

The application belongs to the field of organic chemistry and provides a 1,3-dithiane substituted cyclobutene derivative and a preparation method and application thereof. That is, with acetylenic thiane compound and cinnamate compound as raw materials, intermolecular cycloaddition occurs under the promotion of a base to obtain. And through negative ion relay chemistry, a more complex cyclobutene can be obtained. The structural feature is that it has a structure shown in formula (I), wherein R 1 , R 2 is aryl; R 3 is alkyl or aryl; X = oxygen (O) or sulfur (S); and E is hydrogen, alkyl or aryl. The method provided by the application uses a cheap strong base as a promoter, avoids using a noble metal catalyst, has mild reaction conditions, simple operation, wide substrate applicability, does not need anhydrous and oxygen-free operation, has strong practicability and a prospect of industrial application. The method provided by the application can be used for synthesis and later modification of natural products, drug molecules and functional material molecules.

The invention discloses a synthetic method of 1,2-disulfide ethane compounds and 1,4-dithiane, belongs to the field of organic synthesis technology, including S1, dissolving iodine in an organic solvent; S2, adding 1,4-dioxane and thiol or thiol compound R-SH or ethanedithiol to the solution of step S1, sealing, heating and stirring until the reaction is completed; S3, adding Na2S2O3 to the solution at the end of the S2 reaction to reduce the remaining I2; S4, extracting with dichloromethane, drying and concentrating the organic phase, and purifying the crude product by silica gel column chromatography to obtain a final product. The present invention uses 1,4-dioxane as "-CH2CH2-" precursor, and realizes the ring-opening substitution reaction of 1,4-dioxane under the synergistic effect of iodine and S-H bonds. The synthesis step of the reaction is simple, cost-effective, and the reaction process is safe.

The present invention discloses an aggregation-induced luminescence material, nanoparticles, a preparation method and an application thereof, and relates to the technical field of luminescent materials. The structural formula of the aggregation-induced luminescence material is: wherein R is selected from one of the following structures: represents a connection site. The present invention uses 6,7-di(thiophene-2-yl)-[1,2,5]thiadiazole[3,4-g]quinoxaline as a strong electron acceptor, introduces benzene or 2,3-dihydrothiophene[3,4-b][1,4]dioxin at both ends as a rich electron donor / π bridge, and increases the dihedral angle with the acceptor as a large steric group, making the overall molecular skeleton more distorted, thereby ensuring its aggregation-induced luminescence characteristics. At the same time, dimethylbenzene or trimethylbenzene is used as an electron donor to extend the absorption and emission wavelengths. The aggregation-induced luminescence material can be used as a rotary motor for thermal energy conversion, has good photothermal conversion ability and reactive oxygen generation ability, and can be used for multimodal diagnosis and treatment of cancer.

The invention relates to a thiophene-modified copper-cluster metal covalent organic framework material and application of the thiophene-modified copper-cluster metal covalent organic framework material in photocatalysis of organic conversion of thioamide into thiadiazole. According to the invention, a cyclic trinuclear copper cluster unit is used as a raw material, and the cyclic trinuclear copper cluster unit, 2, 5-bis (thiophene-2-yl) benzene-1, 4-diamine (alpha SPA) and 2, 5-bis (thiophene-3-yl) benzene-1, 4-diamine (beta SPA) are prepared into two types of thiophene modified copper cluster metal covalent organic framework (M-COF) materials with efficient charge separation efficiency through a solvothermal method. The material is applied to the field of photocatalytic organic conversion, and thioamide cyclization and conversion of derivatives of thioamide are achieved under irradiation of a white light LED. The prepared M-COF has excellent charge separation efficiency and electron mobility, the catalyst is applied to performance research of photocatalytic thioamide cyclization reaction, and the synthesis strategy of the catalyst has wide substrate universality and functional group compatibility. The activity is not obviously attenuated after continuous and repeated recycling, and the efficient and sustainable photocatalytic conversion performance is manifested.

The invention belongs to the technical field of organic photoelectric functional materials, and particularly relates to a luminescent material based on a conjugated modified dithienyl anthracene-phenanthroimidazole skeleton and a preparation method and application thereof. According to the invention, substituent groups (phenyl, naphthyl, anthryl, pyrenyl and triphenylamine) with different conjugation degrees are selectively introduced, and the system regulates the steric hindrance and electronic structure of molecules, so that collaborative optimization of mechanical stimuli response and aggregation-induced emission is successfully realized; the molecular engineering strategy can accurately control the force-induced discoloration behavior (blue-green-yellow reversible transformation) and AIE characteristics of the material, and keeps excellent biocompatibility at the same time. The method disclosed by the invention not only discloses a regulation and control rule of substituent conjugation degree and spatial configuration on material performance, but also provides a designable molecular platform for developing a novel intelligent luminescent material, and has important application value in the fields of anti-counterfeiting encryption, biological imaging, flexible photoelectricity and the like.

The application relates to a dithiophene glycol hydrazine aluminum ion fluorescent probe and a preparation method. The dithiophene glycol hydrazine aluminum ion fluorescent probe is prepared by carrying out an amidation reaction on 2,2-dithiophenyl glycolic acid methyl ester and hydrazine hydrate, and then carrying out an amine aldehyde condensation on 2-hydroxy-1-naphthaldehyde. The material ratio of 2,2-dithiophenyl glycolic acid methyl ester, hydrazine hydrate and methanol is 1g:2mL:16mL, the mass concentration of hydrazine hydrate is 40%-50%, the molar ratio of the intermediate 1 and 2-hydroxy-1-naphthaldehyde is 1:1, and the eluent is petroleum ether / ethyl acetate with a volume ratio of 1:4. The dithiophene glycol hydrazine aluminum ion fluorescent probe preparation method is simple, fast in response speed, strong in anti-interference ability, wide in pH application range, beneficial to convenient and trace detection of aluminum ions in an ecological environment and water, and has popularization and application values.

To provide a masking agent for unpleasant odors derived from plants, in particular a grassy odor of soybean and an unpleasant odor derived from fats and oils of processed meat products (such as a hexanal odor), a method for masking unpleasant odors using the compound, and a method for producing an oral product in which unpleasant odors are masked.SOLUTION: The present invention provides an unpleasant-odor masking agent for oral products which contains at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl) ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide.SELECTED DRAWING: None

The invention discloses a novel method for synthesizing a dithiane derivative, and belongs to the technical field of synthesis of organic compounds. The method comprises the following steps: (1) adding a reaction substrate I, a reaction substrate II and an organic selenophosphine Lewis acid catalyst into a solvent to form a reaction system, stirring the reaction system at room temperature or under a heating condition, and terminating the reaction by using a saturated ammonium chloride solution after the reaction is completed; (2) extracting the reaction system completing the reaction in the step (1) to obtain an organic layer, and washing and combining the organic layer; (3) sequentially carrying out drying, filtering and vacuum concentration treatment on the organic layer combined in the step (2) to obtain a crude product; and (4) performing column chromatography separation and purification on the crude product obtained in the step (3) to obtain the dithiane derivative. The dithiane derivative can be successfully synthesized under a relatively loose and mild condition, so that the simple, efficient, low-cost and high-universality synthesis of the dithiane derivative is realized.

A method of selectively inhibiting aldehyde dehydrogenase 1a1 (ALDH1a1) relative to aldehyde dehydrogenase 2 (ALDH2) in a subject may include administering to the subject in need thereof, an effective amount of a disulfiram derivative having a structure which may be substituted and is optionally a salt, solvate, tautomer, stereoisomer, or mixture thereof, thereby selectively inhibiting the ALDH1A1 relative to ALDH2 in the subject. An aldehyde dehydrogenase 1a1 (ALDH1a1)-selective antagonist composition, may include such a disulfiram derivative and a pharmaceutically acceptable carrier and / or excipient.

The invention belongs to the technical field of photoetching, and particularly relates to an anti-reflection coating composition as well as a preparation method and application thereof. The anti-reflection coating composition comprises epoxy resin, an acid generator, a cross-linking agent, an organic solvent I and an optional surfactant; the epoxy resin contains a structural unit I derived from a dithienyl-containing dicarboxylic acid compound as shown in a formula (1) and a structural unit II derived from an epoxy group-containing isocyanurate compound as shown in a formula (2). The key of the invention lies in that the epoxy resin with a specific structural unit is used as the film-forming resin of the anti-reflection coating composition, so that the adhesion between the formed anti-reflection film and the photoresist layer is obviously improved, the structural defects existing on the surface of the substrate material can be well filled, and the anti-reflection effect is good.

Organic photovoltaics (OPVs) based on a slot-die coated ternary blends for low-intensity light harvesting are disclosed herein. The ternary blends comprise either a N-annulated perylene diimide-based electron acceptor material or an aalkyl-12,13-dihydro[1,2,5] thiadiazolo[3,4e]thieno[2″,3″:4′,5] thieno[2′,3′:4,5] pyrrolo[3,2-g] thieno [2′,3′:4,5]thieno [3,2-b]indole-2,10-diyl)bis(methanylylidene)) bis(3-oxo-2,3-dihydro1H-indene-2,1-diylidene))dimalononitrile) (BTP)-based electron acceptor material, a second acceptor material, and an electron donor material which comprises poly[(2,5-bis(2-hexyldecyloxy) phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c] [1,2,5]thiadiazole)] (PPDT2FBT). In an aspect, a N-annulated perylene diimide dimer (tPDI2N-EH, PDI) acceptor material was incorporated into a blend of donor polymer material (PPDT2FBT) and fullerene acceptor [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) material to give ternary bulk heterojunction (BHJ) blends. In a further aspect, a BTP-based electron acceptor material was incorporated into a blend of donor polymer material (PPDT2FBT) and fullerene acceptor [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) material to give ternary bulk heterojunction (BHJ) blends.

The invention discloses a preparation method and application of a photosensitizer molecular nano reagent for photodynamic response to singlet oxygen, and belongs to the technical field of fine organic synthesis and biological medicines.The photosensitizer molecular nano reagent is mainly prepared through covalent bond coupling of 3, 6-di (2-thienyl)-2, 5-dihydropyrrolo [3, 4-c] pyrrole-1, 4-diketone (DPP) and a derivative thereof and 4-bromotriphenylamine, and the photosensitizer molecular nano reagent is prepared through the preparation method of the photosensitizer molecular nano reagent for the photodynamic response to singlet oxygen and the preparation method of the photosensitizer molecular nano reagent for the photodynamic response to singlet oxygen. According to the present invention, the target product DPPTPA is synthesized, the strength of the conjugated system is easily increased so as to improve the overall singlet oxygen yield, the DPPTPA is prepared into the nanoparticles through the nanometer reprecipitation preparation method, the absorption wavelength is in the near-infrared region, and the nanoparticles have characteristics of good photothermal conversion ability, excellent water dispersibility and tumor tissue targeting property, and can be used for preparing the nanoparticles, under the irradiation of near-infrared light, cancer cells can be effectively killed, and tumor-bearing nude mouse model research shows that the nanoparticles can completely eliminate tumors and inhibit tumor recurrence, and have high potential in anti-tumor application.

The application discloses a kind of synthesis methods for rapidly synthesizing five-membered aromatic heterocycle-indane derivative, belong to the field of organic synthesis. With five-membered aromatic heterocyclic compound, chloroalkyl-1,3-dithiane substituent as raw material, under the action of Lewis acid, five-membered aromatic heterocycle-indane derivative is efficiently constructed through one-step experimental operation. The method has the advantages of good selectivity, mild reaction conditions, high yield, simple and safe operation, etc. The five-membered aromatic heterocycle-indane derivative synthesized by the application has a thioxane molecular structure, which can realize further chemical conversion. At the same time, it overcomes the deficiency of requiring expensive noble metal catalyst and multiple steps in most indene ring synthesis reactions, and has certain application prospect in the field of organic synthesis and medicinal chemistry.

This invention belongs to the field of new materials technology, and more specifically, relates to an alkoxytriphenylamine conjugated modified dithienylethylene derivative and its applications. The dithienylethylene derivative has structural units as shown in formula (I): wherein R1O and R2O are each independently a C1-C4 alkoxy group, and Ar is a C6-C4 alkoxy group. 14 The aryl group. The alkoxytriphenylamine-modified dithienylethylene molecular switch designed in this invention has an absorption wavelength red-shifted to the visible light region, so that the ring-closing reaction can be driven by visible light, while the ring-opening reaction itself is driven by long-wavelength visible light. This achieves full visible light control of the dithienylethylene molecular switch and has strong and efficient visible light responsiveness and remarkable photoisomerization conversion rate.

The invention belongs to the technical field of organic synthesis, and discloses a method for preparing polysubstituted 4-hydroxy-2-thiabicyclo [3.1. 1] heptane through cycloaddition reaction catalyzed by lewis acid. The method comprises the following steps: by taking polysubstituted bicyclo [1.1. 0] butane and 2, 5-dihydroxy-1, 4-dithiane as raw materials, in the presence of a Lewis acid catalyst and an organic solvent, obtaining a cyclization product as shown in a formula I; and removing R1 from the cyclization product as shown in the formula I to obtain a molecule as shown in a formula II. In addition, an asymmetric catalysis method is developed to realize enantioselective synthesis of the cyclization product as shown in the formula I. Compared with a traditional method, the preparation method has the advantages that the raw materials and the catalyst are simple and easy to obtain, the synthesis route is short, the atom economy is high, and the substrate universality is wide; the reaction product can be used as a potential bioisostere of drug active molecules containing ortho-position, meta-position or 1, 2, 4-trisubstituted aromatic hydrocarbon, such as diflunisal; the 4-hydroxy-2-thiabicyclo [3.1. 1] heptane product is subjected to pharmacokinetics and other activity tests, and shows a good application prospect.

The invention provides a method for preparing 2, 5-dihydroxy-1, 4-dithiane by using a continuous turbulent tubular reactor, and belongs to the technical field of organic synthesis application. In a continuous turbulent tubular reactor, a sodium hydrosulfide aqueous solution and a chloroacetaldehyde aqueous solution are used as raw materials, and 2, 5-dihydroxy-1, 4-dithiane is generated within a short reaction time of dozens of seconds to several minutes. The method has the characteristics of simplicity, convenience and safety in operation and high-yield continuous production of the 2, 5-dihydroxy-1, 4-dithiane product. In addition, the environmental pollution of the process is greatly reduced. And the safety performance is greatly improved.

The application belongs to the field of organic chemistry and provides a 1,3-dithiane-substituted pyrazole derivative as well as a preparation method and application thereof. 1 The alkyl or aryl group, and the aryl group. 2 The application provides a method using a cheap base as a promoter, avoids using a noble metal catalyst, has mild reaction conditions, simple operation, wide substrate applicability, high regioselectivity, efficiently functionalizes the C-3 position which is usually not reactive for a pyrazole framework, and has strong practicability and industrial application prospects. The method provided by the application can be used for synthesis and later modification of natural products, drug molecules and functional material molecules.

To provide a masking agent for unpleasant odors derived from plants, in particular a grassy odor of soybean and an unpleasant odor derived from fats and oils of processed meat products (such as a hexanal odor), a method for masking unpleasant odors using the compound, and a method for producing an oral product in which unpleasant odors are masked.SOLUTION: The present invention provides an unpleasant-odor masking agent for oral products which contains at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl) ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide.SELECTED DRAWING: None

The invention discloses an isolongifolanone-based fluorescent probe for detecting Hg < 2 + > as well as a preparation method and application of the isolongifolanone-based fluorescent probe. According to the invention, an isolongifolanone derivative 4-hydroxy-4 '-(1, 1, 5, 5-tetramethyl-1, 3, 4, 5, 6, 12b-hexahydro-2H-2, 4a-bridge methylene benzacridine-7-yl)-[1, 1'-biphenyl]-3-formaldehyde (abbreviated as ABP-HC) is used as a raw material, and the raw material and 1, 3-propanedithiol are subjected to condensation cyclization reaction to prepare a compound 3-(1, 3-dithiane-2-yl)-4 '-(1, 1, 5, 5-tetramethyl-1, 3, 4, 5, 6, 12b-hexahydro-2H-2, 1, 5, 5-tetramethyl-1, 3, 4, 5, 6, 12b-hexahydro-2H-2 The invention relates to 2, 4, 4a-bridged methylene benzacridine-7-yl)-[1, 1 '-biphenyl]-4-alcohol (abbreviated as ABP-HDT). The compound ABP-HDT can specifically recognize Hg < 2 + >, the lowest detection limit is 9.0 * 10 <-8 > M, and the response time is 5 minutes. The compound ABP-HDT can be used as a fluorescent probe for detecting Hg < 2 + > and has a good application prospect.

The present invention belongs to the technical field of functional compound applications and discloses a thienyl COF material with the chemical formula [(TAPB)2(DTTA)3] n ; Wherein, TAPB is 1,3,5-tris(4-aminophenyl)benzene, DTTA is 2,5-di(2-thienyl)terephthalaldehyde, and n is a positive integer. The material is a 2D polygonal sheet structure, each polygon has multiple exposed thiophene groups, and adjacent sheets are stacked layer by layer through π-π forces to form a multilayer network structure with ordered 1D channels. The material has a high specific surface area and can serve as a good storage channel for iodine molecules; the pores contain thiophene groups with electron-donating properties, which have a high affinity for electron-deficient iodine. Thiphenyl-COF is made into solid particles or sheets and can be used as an efficient capture agent in iodine-containing flowing gases.

To provide a novel thermoplastic resin that is lightweight, has a high refractive index, and exhibits excellent processability.SOLUTION: A thermoplastic resin having a structural unit of Poly(BMMD / Tr-OMe) produced by the following reaction formula. In the triazine ring in the formula, an alkoxy group such as a methoxy group of the following formula is introduced. The dithiane ring in the formula may be a non-aromatic ring.SELECTED DRAWING: None

Title: Fused quinoxaline-2,3-dicarbonitrile derivatives, their photochemical synthesis and use thereof The present invention relates to a new photochemical synthetic route towards fused quinoxaline-2,3-dicarbonitriles of general formula (I) wherein R refers to hydrogen, halogen, (C1-C6)alkyl, (C1-C6)alkoxy or (C1-C6)alkylthio, the method comprises photochemical cyclization of the corresponding disubstituted 5,6-di(thiophen-2-yl)pyrazine-2,3-dicarbonitrile, and is specific in the use of light of the wavelength ranging from 400 to 500 nm. The present invention further relates to quinoxaline-2,3-dicarbonitrile derivatives of general formula (I), and to the use thereof in catalysis of photoredox reactions.

This patent designs and synthesizes a metal-organic framework material—Co-TBTT—based on the dithienyloctacarboxylic acid ligand, and uses it as a non-enzymatic glucose electrochemical sensing material for glucose detection. Its potential in glucose sensing was evaluated through electrochemical performance testing. Experimental results show that the Co-TBTT-modified electrode exhibits excellent electrochemical response to glucose under enzyme-free conditions, with a linear detection range of 13.5 μM to 3 mM and a detection limit as low as 0.20 μM, outperforming most currently reported enzyme-free glucose sensors. The Co-TBTT electrode in the presence of Na... + K + Even in mixed solutions containing coexisting ions and interfering substances such as uric acid (UA), ascorbic acid (AA), and dopamine (DA), it maintains good anti-interference ability and exhibits strong selectivity. These excellent properties can be attributed to the porous structure and abundant metal active sites of the Co-TBTT material, providing a novel functional material for the electrochemical sensor detection of glucose.

The application belongs to the field of organic synthesis and relates to a preparation method of a tryptophan compound. The method is to modify an alkyl functional group on the basis of tryptophan and tryptophan-containing polypeptides, that is, to use tryptophan and tryptophan-containing polypeptides and 1,3-dithiane derivatives as raw materials to react in a system of a promoter and silane to obtain a kind of C2 alkylated modified tryptophan and tryptophan-containing polypeptide compound. The method does not need noble metal catalysis, does not need anhydrous and anaerobic operation, has mild conditions, wide substrate applicability, high selectivity, is suitable for free carboxyl or amino groups, and has strong practicability. Moreover, the application provides a metal-free and more environmentally-friendly method for selective alkyl modification of peptides, which has great potential in pharmaceutical chemistry and industrial application.

This invention belongs to the field of new materials technology, and more specifically, relates to a triphenylamine phenyl conjugated modified dithienylethylene derivative, its preparation and application. The dithienylethylene derivative has structural units as shown in formula (I): wherein R1 and R2 are each independently -H, C1-C4 alkyl, or C6-C... 24 The invention designs a triphenylamine phenyl-modified dithienylethylene molecular switch, which red-shifts the absorption wavelength to the visible light region, allowing the ring-closing reaction to be regulated by visible light. At the same time, the ring-opening reaction itself regulates the wavelength in the visible light region, realizing the full visible light regulation of the dithienylethylene molecular switch photoisomerization reaction, and possessing both high visible light responsiveness and on / off ratio.