259 results about "Tetraphenylethylene" patented technology

The invention belongs to the technical field of organic light emitting materials, and discloses an aggregation-induced light emitting material simultaneously containing a triphenylethylene structure and a tetraphenylethylene structure. During synthesis, a triphenylethylene intermediate containing a functional group and a tetraphenylethylene intermediate containing a functional group are connected together by coupling reaction. A synthesis method of the invention has the advantages of simple process and convenient purification; and the synthesized organic light emitting material simultaneously containing the triphenylethylene structure and the tetraphenylethylene structure has the advantages of obvious aggregation-induced light emitting performance, high thermal stability, high glass-transition temperature and high luminous intensity and is suitable for preparing a light emitting layer material in an organic electroluminescent material device.

The invention belongs to the technical field of organic photoelectric materials, and discloses a tetraphenylethylene-containing organic semiconductor material and a preparation method thereof, and application of the material in organic photoelectric devices. The tetraphenylethylene-containing organic semiconductor material is disclosed as Formula I or II, wherein R1, R2, R3, R4 and R5 can be identical or different aromatic ring derivative groups. Different modification groups can be connected to the tetraphenylethylene to regulate the electronic or hole transmission performance of the tetraphenylethylene derivatives, so that the organic semiconductor material not only can be used as a luminescent layer, but also can be used as a luminescent layer and current carrier transmission layer, thereby obtaining the electroluminescent devices with favorable photoelectric properties, simple structure and low cost; and the organic semiconductor material has wide application prospects in the fields of organic electroluminescence, organic field-effect transistors, organic solar cells and other organic electronics.

The invention discloses a novel diamine compound, and a preparation method and an application thereof. The preparation method of the novel functional diamine compound comprises the following steps: a large conjugate structure comprising benzophenone carbonyl group is obtained; the ketone carbonyl group is subjected to a Wittig or Wittig-Horner reaction, such that a large conjugate system with a triphenylethylene/tetraphenylethylene structure and comprising a halogen atom is obtained; the halogen atom is further subjected to a Suzuki reaction or a plurality steps of reactions, such that a monoamine compound comprising a triphenylethylene/tetraphenylethylene large conjugate system is obtained; the monoamine compound is subjected to a reaction with halogenated nitrobenzene, such that a dinitro monomer comprising triphenylamine and the triphenylethylene/tetraphenylethylene large conjugate system is obtained; and the dinitro monomer is reduced into the novel diamine compound, such that the novel functional diamine compound comprising triphenylamine and a triphenylethylene/tetraphenylethylene structure is obtained. The synthesis method provided by the invention is simple. Purification is easy. The method is suitable for industrial productions. The synthesized diamine compound has a significant aggregation-induced emission property, and can be used for synthesizing high-performance and functional polymers such as polyamide, polyimide, polyamideimide, polyesterimide, and the like.

The invention discloses starlike tetraphenylethylene derivative molecular glass, a positive photoresist, a positive photoresist coating and application thereof. The starlike tetraphenylethylene derivative molecular glass has the molecular structure shown in the description. The molecular glass is simple in synthesis process and suitable for industrial production; the tetraphenylethylene has a spatial solid geometrical skeleton adopting a rigid structure, can effectively inhibit molecular crystallization and is easy for film formation; the molecular glass has good solubility in various polar solvents, and has the characteristics of high glass transition temperature and high thermal stability, and can better meet requirements of a photoetching process; by adopting a spin coating method, a good film can be obtained, and the molecular glass can be used as the photoresist and can be prepared into the positive photoresist for photoetching through cooperation with other additives.

The invention discloses a benzothiazole derivative containing a triphenylethylene or tetraphenylethylene structure and having aggregation-induced emission property and a preparation method and application thereof. The preparation method comprises the following steps: with 2-amino-6-methoxybenzothiazole as a start raw material, performing a ring-opening reaction under an alkaline condition to generate 2-amino-5-methoxythiophenol; performing a ring-closing reaction with an aromatic aldehyde compound containing a triphenylethylene or tetraphenylethylene structure to obtain a methoxy-containing benzothiazole derivative, or performing demethylation to obtain a hydroxyl-containing benzothiazole derivative, wherein the compound also can be modified through a group substitution reaction to generate a benzothiazole derivative containing other functional groups. The benzothiazole derivative disclosed by the invention has relatively low luminous intensity in a solution, emits strong fluorescence in an aggregation state or solid state, and belongs to good aggregation-induced emission materials; the synthesis is relatively simple, and the cost of the raw materials is low, so that large-scale commercial production is easy to realize; the benzothiazole derivative plays an important role in the fields of electroluminescent devices, fluorescent probes, fluorescent switches, organism imaging and the like.

The invention relates to a novel preparation method and application of a cationic amphiphilic tetra-armed star polymer. In particular, the star polymer can be obtained through synthetic means such as atom transfer radical polymerization (ATRP) and click chemistry. A core of the star polymer is tetraphenylethylene with the characteristic of aggregation-induced emission. A polymer linear arm is a cationic amphiphilic random copolymer with excellent antibacterial effects. A covalently labeled T1 type magnetic resonance (MR) contrast agent is an organic gadolinium chelate. By using the cationic amphiphilic tetra-armed star polymer, fluorescence/MR double quantitative detection of Gram positive and negative bacteria with negative charges on the surfaces in the environment of pure water is achieved, and meanwhile good antibacterial effects are gained.

The invention discloses a tetrapherylpyrazine low-molecular-weight derivate, a tetrapherylpyrazine polymer and an aggregation-induced emission material. The tetrapherylpyrazine low-molecular-weight derivate is of a structure as shown in a formula (1), wherein R1, R2, R3 and R4 are independently selected from hydrogen, alkoxy, substituted or unsubstituted phenyl, halogen or acetenyl; the substituent of phenyl is aromatic group. The tetrapherylpyrazine derivate is basically prepared by two methods, namely, (1) the method for preparing by the cyclization reaction of a benzoin derivative, and (2) preparing by the cyclization reaction of dibenzoyl derivate and 2-diphenyl diaminoethane; the synthesized diyne derivate can be derived by clicking polymerizing through an AIE (Aggregation Induced Emission) polymer. In light of the simple and convenient synthesis, tetrapherylpyrazine can be used as a novel AIE mother nucleus following after hexaphenyl silole and tetraphenyl ethylene and is wide in applicable scope. The formula is described in the specification.

The invention discloses polyimide with low dielectric properties, and a preparation method and an application thereof. The polyimide provided by the invention is prepared through an imidization method by using the raw materials of aromatic diamine comprising triphenylamine and with large side group comprising triphenylethylene/tetraphenylethylene, and various tetra-dianhydrides. The polyimide provided by the invention has ultra-low dielectric constant, relatively low dielectric loss, excellent solubility, relatively high glass transition temperature, relatively high thermal stability, excellent mechanical performances, excellent photo-luminescent performance, and the like. The synthesis method of the polyimide is simple and diverse, and is suitable for industrial productions. The polyimide provided by the invention can be used for preparing low dielectric materials, and can be widely applied in high-tech industry fields such as electronics, microelectronics, information, luminescent materials, aeronautics and astronautics, and specially very large scale integrated circuits.

The present subject matter relates to compositions containing and synthesis of fluorescent materials e made from tetraphenylethylene (TPE) derivative compounds exhibiting aggregation induced emission (AIE) properties. Further contemplated herein are applications for TPE derivative compounds such as electroluminescent devices since they have a high efficiency, low turn on voltage, and excellent brightness. Additionally, application of TPE derivatives exhibiting AIE properties in various fields such as OLEDs, fingerprinting and forensic technology, and various other biological and industrial sectors are discussed.

The invention relates to a polymer with an aggregation-induced luminescent effect and a preparation method thereof, as well as a graphene composite material and a preparation method thereof. The polymer adopts structural general formula I, wherein n is from 8 to 20, and each of R1 and R2 is independently selected from C1-C6 alkyl, C1-C6 alkoxy or hydrogen. The polymer with the aggregation-induced luminescent effect is an AIE polymer containing a tetraphenylethylene functional group and adopting a novel structure; in the presence of the polymer, through in-situ reduction of graphene oxide, non-covalent bond modification of the graphene is achieved, and the graphene composite material soluble in an organic solvent is prepared; the composite material has an obvious AIE effect, and the AIE effect is higher than that of the polymer itself, so that the composite material has a wide application prospect in chemical sensors, bioprobes, solid state fluorescent materials and the like.

The invention relates to a preparation method of a compound of formula (I). The method comprises the following steps: adding a tetraphenyl ethylene solution to a nitric acid and acetic acid mixed mixture for 5-15min to obtain an initial reaction mixture solution, and nitrating at 0-30DEG C, wherein a molar ratio of nitric acid to acetic acid in the mixture is 1:1.2-1:2; and in the initial reaction mixture solution, a molar ratio of tetraphenyl ethylene to nitric acid is 1:15-1:25, and the nitric acid content is 15-20wt%. The method has the advantages of simple synthesis route, cheap and easily available raw materials, high yield of the target product, and simple extraction and purification, is expected to realize large-scale commercialized production. The compound of the formula (I) and similar compounds of formula (II) have an inverse stimulation response fluorescence allochroism property, and can realize above two fluorescence colors. The invention also relates to a use of the compounds of the formula (I) and the formula (II) in inverse stimulation response fluorescence allochroism materials.

The invention discloses a novel nucleic acid fluorescent probe, and the structure is that a DPA (dipicolylamine) or DPA-Zn (II) group is connected with tetraphenylethylene. DPA-Zn (II) can be combined with nucleic acid and other phosphoric acid derivatives in a solution to inhibit non-radiative transition of molecules so as to emit florescence. The fluorescent probe can be used for detecting the nucleic acid and has higher sensitivity in the detection of double-stranded DNA (deoxyribonucleic acid) and single-stranded DNA. The probe has better application prospects when applied in gel electrophoresis or detection and color development of the nucleic acid in biological samples.

The invention discloses a ratiometric fluorescent probe for detection of hydrogen sulfide and a preparation method of the ratiometric fluorescent probe. A compound of the probe is 2-(6-azido-1,3-dioxo-benzoisoquinolinyl)ethyl 2-(4-((4-(1,2,2-triphenylvinyl)phenoxy)methyl)-1,2,3-triazolyl)ethyl)succinate. During the preparation, 4-bromo-1,8-naphthalic anhydride is reacted with 2-aminoethanol to obtain a solid, namely, 6-bromo-2-(2-hydroxyethyl)-benzoisoquinoline-dione, the product is reacted with sodium azide to obtain a solid, namely, 6-azido-2-(2-hydroxyethyl)-benzoisoquinoline-dione; and then 6-azido-2-(2-hydroxyethyl)-benzoisoquinoline-dione is subjected to a series of reaction to obtain the solid probe compound. The probe compound is composed of hydrophobic tetraphenylvinyl and hydrophilic receptor units containing azide group and can be used for quantitative analysis of hydrogen sulfide in chemical, biological, environmental and other samples.

The invention provides a tetraphenylethylene indole derivative molecule, a preparation method therefor and an application of the tetraphenylethylene indole derivative molecule in the fields of cell imaging and detection of thiols in cells. According to the application, two indole salt structures are introduced to a tetraphenyl ethylene molecule, and the molecule is applied to the cell imaging and thiol compound analysis as a fluorescence molecule probe by using fluorescence emission characteristics of the molecule. Due to the introduction of the two indole salt structures, the interaction between the molecule probe and the surface of a mitochondrion in a cell can be enhanced, then, the selective imaging of the mitochondrion and the detection of a membrane potential of the mitochondrion are achieved, and a more-sensitive potential indicating result is obtained. The induced luminescence integrated fluorescence molecule provided by the invention has the advantages of low cell toxicity and good luminescence stability, can be applied to the analysis of thiol compounds, the mitochondrion imaging of the cells and the detection of membrane potential changes of mitochondria and shows a potential application value in the field of biomedicines.

The invention relates to a composite nanomaterial with an aggregation-induced luminescent property and a photothermal conversion property. The composite nanomaterial comprises molecules with aggregation-induced luminescent property and with tetraphenylethylene as a main body and a semiconductor polymer with near-infrared photothermal conversion property and with a diketopyrrolopyrrole as a skeleton. The material is nano-particles with uniform particle size and good biological safety, and the problems of coexistence and adjustability of fluorescent property and photothermal conversion propertyare solved. The composite nanomaterial has dual-mode imaging properties of fluorescent imaging and photoacoustic imaging, has photothermal conversion ability, and can be used in cell fluorescent imaging, cell organ fluorescent imaging, tumor fluorescent-photoacoustic imaging and tumor photothermal treatment applications, and has potential applications in other biological imaging fields.

The invention discloses a compound shown as a formula (i) and a preparing method thereof. The compound can be adopted as a fluorescence probe and applied for an alkaline phosphatase activity fluorescence detection method. By utilization of a fluorescence resonance energy transfer theory, and by adopting a tetraphenylethylene derivative and 5(6)-carboxyl fluoresce as a donor and a receptor for an FRET system, an "OFF-ON"FRET probe adopting a phosphate group as a recognition group is designed and synthesized. Equipment needed for preparation of the fluorescence probe is simple. Operation processes are simple. The sources of raw materials are commercialized and easily available. The probe has high specificity for the alkaline phosphatase. When the fluorescence probe is applied for alkaline phosphatase activity fluorescence detection, the accuracy and the sensitivity are largely improved than those of basic methods used in the prior art for detection the alkaline phosphatase activity.

The invention discloses a tetraphenyl ethylene derivative ion complex and a preparation method thereof. The tetraphenyl ethylene derivative ion complex is shown in the formula (VII) shown in the specification, wherein R' is one of straight chains with 6-18 carbon atoms, branched chains and naphthenic chains. The tetraphenyl ethylene derivative ion complex has an obvious aggregation-induced emission effect, the yield of solid fluorescence quantum is larger than 40%, and the luminescence property is excellent; the preparation method is simple, the yield is high, purification is easy, and cost is low.

The invention relates to a Schiff base compound based on tetraphenylethylene and mandelonitrile as well as a preparation method and an application of the Schiff base compound. Compared with common Salen type mandelonitrile fluorescent probe structures, probe structures in the type have excellent red fluorescent behaviors and excellent solid state (state of aggregation) efficiency, realize selective recognition and imaging of specific structures in cells, have better responsiveness to anions, cations and pH values, thereby having extremely broad application prospect in the fields of biology, medical treatment, health and monitoring.

The invention discloses an aggregation-induced red light emission material and a preparation method thereof. The aggregation-induced red light emission material has a structural formula represented by the formula [I]. The aggregation-induced red light emission material is prepared by the following steps: using diphenylmethanone derivatives and 4-hydroxyl diphenylmethanone, which have same groups on the 4,4'- positions, to synthesize tetraphenyl ethylene derivatives with hydroxyl groups in the presence of zinc powder and titanium tetrachloride; then using organic amine and 1,6,7,12-tetrachloro-3,4,9,10-perylenetetracarboxylic acid dianhydride to synthesize tetrachloroperylene imide derivatives; and finally preparing the final product from the two intermediates through Williamson reactions. The provided preparation method has the advantages of mild conditions, simple technology, easy purification, and cheap raw materials.

The invention discloses a preparation method of a water-soluble chitosan-based aggregation-induced emission fluorescent probe with reduction responsiveness, mainly comprising the following steps: modifying chitosan molecules by adopting a hydrochloric acid/methanol mixed solvent system and an EDC/NHS catalytic system, so as to obtain disulfide bond connected carboxylation chitosan CS-ss-COOH; marking tetraphenyl ethylene (TPE) fluorescent molecule to a CS-ss-COOH chain to obtain TPE-CS-ss-COOH with aggregation-induced emission (AIE) characteristic. The fluorescent probe prepared according to the invention not only has good reduction responsiveness and water solubility, but also has aggregation-induced emission characteristic, and compared with conventional fluorescent probes, has the advantages of being high in sensitivity, good in photostability, free from quenching at high concentration, no drifting of fluorescence spectrum, and the like, can also realize further enhancement of the fluorescence intensity in a glutathione solution, is good in imaging effect, and is expected to be applied to the fields of tumor cell specificity tracking, cell metabolism detection, drug metabolism detection, environment monitoring and the like.

The invention discloses a compound shown as a general structural formula (I). The compound is obtained by using tetraphenylethylene as a mother nucleus, using simple coupling reactions of Suzuki, Heck and the like and a substitution reaction of Sn2 as well as introducing a water-soluble group for designing and synthesizing. The compounds have the advantages of excellent luminescent properties, water solubility, short synthetic route, simple and convenient method and high practical value. (The formula is shown in the description).

The invention relates to preparation of a tetraphenyl ethylene polymer with azobenzene reduction response and application of tetraphenyl ethylene polymer in a hydrogel fluorescent probe. The tetraphenyl ethylene polymer is obtained under the action of a double-head acrylic ester cross-linking agent (TPE-2AzoMA) containing tetraphenyl ethylene and an azobenzene group, and a polyethylene glycol monomer and a crylic acid monomer are subjected to free radical polymerization under the action of an initiator. An obtained cross-linked random copolymer is subjected to swelling processing in water to obtain the hydrogel for wrapping medicine. After Na2S2O4 or azo reductase is added, with degradation of the gel, a solution generates fluorescence and the fluorescence is gradually enhanced with time,and the wrapped medicine is further released gradually. A fluorescence spectrophotometer tests the fluorescence strength change in the solution in the process to monitor the drug release process. Theazo reductase mainly exists in colon of a human body, and therefore, the polymer hydrogel is a potential colon locating drug controlled release carrier.

The invention relates to a fluorescent ratio probebased on the aggregation induced luminescence property and detection application to hydrogen peroxide and glucose of thefluorescent ratio probe and belongs to the intersection field of chemistry and materials science. The fluorescent ratio probe comprises tetraphenylethylenesulfonate and gold nanoclusters coated with bovine serum albumin. The aggregation induced luminescence phenomenon is generated by the tetraphenylethylenesulfonatedue to the effect of electrostatic adsorption of the tetraphenylethylenesulfonate and the gold nanoclusters, a mixed solution presents dual emission wavelengths in410-550nm and in 500-850 nm correspondingly, and when the ratios of the tetraphenylethylenesulfonateto the gold nanoclustersare different, presented colors of a mixed fluorescent probe are different. Aggregation induced luminescence of the tetraphenylethylenesulfonate can be used as a reference fluorescence color, detection of the hydrogen peroxideand the glucose can be achieved according tothe linear change relationship betweenthe change value of the double emission peak fluorescence ratios (I<0>-I)/ I<0> and analyte concentration C, and thefluorescent ratio probe has the advantages of being simple, fast and visual in the detection of the hydrogen peroxide and glucose.

The invention relates to a difluoro monomer containing tetraphenylethylene groups and application of the difluoro monomer in the respect of preparing polyaryletherketone polymers containing tetraphenylethylene side groups, and belongs to the field of high molecular materials and a preparation technology thereof. The difluoro monomer containing a tetraphenylethylene structure is (2,6-difluorophenyl)(4-(3-(4-1,2,2-triphenyl vinyl) phenoxy) propyl) phenyl) ketone. The application lies in that the difluoro monomer containing the tetraphenylethylene structure, a double-fluorine monomer and a bisphenol monomer perform a co-polymerization reaction, and the feed ratio of a (2,6-difluorophenyl)(4-(3-(4-1,2,2-triphenyl vinyl) phenoxy) propyl) phenyl) ketone monomer is regulated so as to obtain the polyaryletherketone polymers with a series of tetraphenylethylene side groups with different contents. The monomers have the difluoro groups which can be used for polymerization, the monomers can be introduced into the polyaryletherketone, so that the polyaryletherketone materials with excellent heat resistance and excellent chemical stability concurrently have the nature of gathering induced luminescence, and the monomers have both the heat resistance and the chemical stability of the polyaryletherketone materials so as to meet application requirements in some harsh environment.