40 results about "Donor acceptor" patented technology

The present invention relates to dichroic dye compounds of formula I, as defined in claim 1, which are based on the donor-acceptor structure wherein the donor moiety comprises a polycyclic heteroaromatic group consisting of at least four fused rings, to mesogenic media comprising one or more compounds of formula I, the present invention relates to novel compounds, mesogenic media and liquid crystal materials, and to the use of these compounds, mesogenic media and liquid crystal materials in optical, electronic and electro-optical applications, in particular in devices for regulating energy through external spaces into internal spaces, for example in switchable windows for solar control in smart buildings and vehicles, with energy conservation and improved comfort.

A photonic-organic electrochemical transistor (POECT), including a substrate, three terminals including a gate, a drain, and a source disposed over the substrate, wherein the space between the drain and the source forms a channel, and an electrolyte in fluid and electrical communication with the gate and the channel, wherein the channel is formed of a photoactive layer composed of donor-acceptor bulk-heterojunction interfaces.

This invention belongs to the field of catalyst materials technology, specifically disclosing a class of donor-acceptor polymer photocatalysts, their preparation methods, and their applications in the recycling of spent lithium-ion batteries. This invention provides a class of donor-acceptor polymer photocatalysts, including D1-A-D1-D2 type polymer TFP and D-A1-D-A2 type polymer TSP. Polymer TFP / TSP is synthesized through a Schiff base reaction of 4,4'-(thiazolium[5,4-d]thiazolium-2,5-diyl)dibenzaldehyde with 2,7-diaminofluorene / 3,7-diaminodibenzo[b,d]thiophene-5,5-dioxide. Furthermore, polymer TSP can efficiently photocatalyze the synthesis of H2O2 in a water-benzyl alcohol system. The generated H2O2 enables the recovery of valuable heavy metals (Co, Li) from lithium-ion batteries at room temperature and pressure, providing an important safety guarantee for solving the "environmental pollution pain point" of spent batteries and the sustainable development of the new energy industry.

The invention relates to the technical field of electrochemical luminescence, and provides a synthesis method and application of a three-component cyclized covalent organic framework. The preparation method comprises the following steps: synthesizing a three-component cyclization covalent organic framework Ta-PT-p 'COF by taking electron-rich terephthalaldehyde as an electron donor, electron-deficient 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine as an electron acceptor and electron-rich phenol as a third component through a Betti reaction and a Friedel-Crafts cyclization reaction, and coating the surface of an electrode with the three-component cyclization covalent organic framework Ta-PT-p' COF to construct an electrochemical luminescence system. According to the present invention, the hydroxyl group in the Ta-PT-p 'COF can be combined with the UO2 < 2 + > to generate the charge transfer, such that the charge transfer effect between the donor-acceptor unit in the Ta-PT-p' COF is destroyed so as to reduce the Ta-PT-p 'COF electrochemical luminescence signal, and the signal reduction degree and the UO2 < 2 + > concentration form the linear relationship, such that the UO2 < 2 + > detection method based on the electrochemical luminescence is constructed, and the good application prospect is provided.

The invention discloses a near-infrared photothermal molecule, a preparation method thereof and an application of the near-infrared photothermal molecule in a photoresponse polyimide material. The structure of the near-infrared photothermal molecule is shown as the following formula. The photothermal molecules with donor-acceptor-donor configuration are designed and are suitable for preparing the photoresponse polyimide material, so that the agglomeration phenomenon caused by doping inorganic particles in the polymer can be avoided, and the original mechanical property of the polymer is well maintained; the high-efficiency non-radiative transition capability of photo-thermal molecules in the polymer is realized, the obtained photo-response polyimide material has extremely high response speed to infrared light and realizes reversible response, violent deformation is immediately generated when the material is irradiated by near-infrared light, and the material almost recovers to the original form after the near-infrared light is turned off.

The invention relates to donor-acceptor compounds comprising at least one carbazole-based donor unit and one acceptor unit. The invention further relates to a method for preparing the above-mentioned donor-acceptor compounds. Furthermore, the invention relates to an emission layer (22) comprising the above donor-acceptor compounds, and to the use of the above donor-acceptor compounds as emitters in a light-emitting device (24). The invention also relates to an electrical device (24), in particular an organic light-emitting diode, comprising the above emission layer (22).

The invention discloses a donor-receptor type carbon nitride photocatalyst as well as a preparation method and application thereof, and the preparation method of the donor-receptor type carbon nitride photocatalyst comprises the following steps: mixing a carbon nitride precursor with molten salt, and calcining to obtain cyano-modified carbon nitride; and mixing the cyano-modified carbon nitride with 4, 4 '-diphenyldicarboxylic acid, and calcining to realize a covalent bonding reaction, thereby obtaining the donor-receptor type carbon nitride photocatalyst. According to the carbon nitride photocatalyst, an asymmetric donor-acceptor structure is constructed, a strong built-in electric field is induced, meanwhile, cyano serves as a proton / electron repository, the charge separation efficiency and the proton transmission capacity are remarkably improved, and therefore photocatalytic preparation of hydrogen peroxide is efficiently achieved.

To provide an antistatic masterbatch which, even when a polypropylene resin or a low-density polyethylene resin is used as a diluent resin, takes a short time to develop an effective antistatic effect and can produce a resin composition and a resin molded article excellent in antistatic properties.SOLUTION: An antistatic masterbatch comprising at least one base resin selected from the group consisting of a homopolypropylene resin, an ethylene-propylene random copolymer, and a low-density polyethylene resin, a donor-acceptor type antistatic agent, and a bleed effect agent, wherein the bleed effect agent is at least one selected from the group consisting of a long-chain aliphatic alcohol, a long-chain aliphatic ester, and a surfactant, the content of the antistatic agent is 5 to 25% by mass, the content of the bleed effect agent is 0.5 to 15% by mass, and the amount of the bleed effect agent is 0.1 to 1 part by mass with respect to 1 part by mass of the antistatic agent.SELECTED DRAWING: None

The application discloses a melanin photo-thermal coating material and a preparation method and application thereof, and belongs to the technical field of artificial melanin materials. The preparation method comprises the following steps: dissolving dopamine and p-phenylene diisocyanate in a good solvent, and stirring at room temperature for more than 24 hours to obtain the melanin photo-thermal coating material. The preparation method is based on the controllable alternating copolymerization of hydroxyl-isocyanate group click chemistry to construct a donor-acceptor pair structure in a PDA microstructure, thereby effectively avoiding the problems existing in free radical polymerization, realizing controllable preparation of a PDA melanin coating with good normalized physical properties, and improving the stability of the PDA melanin coating in different solvents, so that the PDA melanin coating can better meet the photo-thermal conversion application of various solvent systems.

The application belongs to the technical field of covalent organic framework materials, and particularly relates to an electron acceptor, a preparation method thereof, and a benzothiadiazole quinoxaline covalent organic framework material and application. The application first provides an electron acceptor, then adopts the electron acceptor and an electron donor to perform Schiff base reaction to prepare a benzothiadiazole quinoxaline covalent organic framework material, the electron donor is selected from tetramine of pyrene or 1, 3, 5-tri (4-aminophenyl) benzene, and the benzothiadiazole quinoxaline covalent organic framework material is applied as a photocatalytic material. The application takes quinoxaline benzothiadiazole as an electron acceptor, adjusts donor-acceptor arrangement, and arranges a donor-acceptor structure, so as to enhance a charge transfer process, slow down binding, improve photocatalytic efficiency, provide a molecular structure basis for a structure-performance relationship of covalent organic framework materials, design and develop a high-performance photocatalyst, and overcome the defects of low catalytic efficiency of the existing covalent organic framework materials.

The invention discloses a sonodynamic nano-catalyst and a preparation method and application thereof.The preparation method constructs an organic metal molecule with copper as the center, the organic metal molecule adopts an acceptor-donor-acceptor (A-D-A) structural design, and after the organic metal molecule is prepared into nano-particles, active oxygen can be efficiently generated under ultrasonic stimulation. In order to enhance tumor targeting and immune regulation functions, the sonodynamic nano-catalyst is wrapped to overexpress M1 type macrophage membrane of PD-1, and the sonodynamic nano-catalyst and lipid nanoparticles entrapped and loaded with targeted CD300ld small interfering RNA are jointly loaded into 3D printed bioadhesive GelMA-based hydrogel, so that precise implantation of the cervix uteri is realized. After ultrasonic activation, the system realizes tumor killing ROS generation and selective silencing of PMN-MDSC source immunosuppression.

The invention belongs to the field of photocatalysis, and particularly relates to vinyl-linked donor-pi-receptor COFs as well as a preparation method and application thereof. The vinyl-linked donor-pi-acceptor COFs comprises an electron donor, an electron acceptor A and a pi-conjugate connecting bridge, the electron donor is a benzene ring, a naphthalene ring or a derivative thereof; the electron acceptor is 2, 4, 6-trimethyl-1, 3, 5-triazine; and the pi-conjugate connecting bridge is vinyl and is used for covalently connecting the electron donor and the electron acceptor to form a conjugate skeleton with a donor-pi-acceptor electron structure. According to the invention, a precious insight is provided for application of customized COFs by illuminating a structure-performance relationship of bifunctional photocatalysis in a D-pi-A system. The key effect of an electron donating motif in adjusting charge kinetics and reaction pathways is emphasized, which is crucial for enhancing H2O2 production and reactive oxygen species generation so as to realize efficient pollutant remediation.

The invention discloses a D-A type covalent organic framework material as well as a preparation method and application of the D-A type covalent organic framework material. The material is obtained through aldehyde amine condensation by using N, N ', N'-tetra (p-aminophenyl) p-phenylenediamine (TAPB) as a donor unit and 3, 6-bis (5-aldehyde thiophene-2-yl)-2, 5-bis (2-ethylhexyl) pyrrolo [3, 4-c] pyrrolo [3, 4-c] pyrrole-4 (2H, 5H)-diketone (DSZ) as an acceptor unit, and the material is of a two-dimensional layered porous structure, is dark blue and has reversible switching electrochromic performance from dark blue to nearly transparent color. According to the invention, a donor-receptor type covalent organic framework structure is constructed through TAPB and DSZ, and reversible color change from dark blue to nearly colorless in a near-infrared region is realized by using synergistic oxidation reduction of a D-A unit and charge transfer characteristics of a conjugated framework.

The invention provides a donor-receptor type polymer material regulated and controlled by a condensation center as well as a preparation method and application of the donor-receptor type polymer material. The chemical formula of the donor-receptor type polymer material regulated and controlled by the condensation center is CxHyOzNmSn. The preparation method comprises the following steps: enabling donor molecules and acceptor molecules to form a condensation center regulation donor-acceptor type polymer material linked by imine through a solvent-mediated catalyst-free supramolecular chemical assembly process and a subsequent low-temperature pyrolysis process; the donor-acceptor type polymer material disclosed by the invention has a large delocalization conjugation effect, a molecular orbital hybridization effect, a strong electron push-pull effect between donor and acceptor units and a special pi-pi stacking structure, and is high in photon capture and charge transfer capability, high in photoinduced exciton separation efficiency in a photoreaction process, wide in light absorption range and high in photoelectric conversion efficiency. The double-channel driven H2O2 production process is realized, and the double-channel driven H2O2 can be used as a photocatalyst for producing hydrogen peroxide, ex-situ Fenton sterilization and disinfection and removing organic pollutants.

The application discloses a kind of temperature response degradable polymer and preparation method thereof, the polymer is the terpolymer P (AAm-co-MI-co-MDO) of AAm, MI and MDO.It is prepared by the radical ring-opening polymerization of RAFT control, and is reacted in DMSO after being purified with initiator AIBN, chain transfer reagent CDSPA.The critical solubility temperature characteristics are given to polymer by hydrogen bond interaction between AAm and MI unit, and by changing monomer molar ratio, polymer phase transition temperature can be controlled in 20~65 ℃ interval;Meanwhile, the ring-opening rate of MDO is increased to more than 85% by using the donor-acceptor copolymerization effect of MI and MDO, and the hydrolyzable ester bond is efficiently embedded in the main chain to realize degradability.The polymer has temperature response and controllable degradability, and the synthesis method is simple and efficient, which has application potential in the field of drug controlled release, tissue engineering and other biomedical fields.

The application discloses a sonodynamic nanocatalyst and a preparation method and application thereof, the preparation method constructs a copper-centered organometallic molecule, which adopts an acceptor-donor-acceptor (A-D-A) structure design and can generate active oxygen under ultrasonic stimulation after being prepared into nanoparticles. In order to enhance tumor targeting and immune regulation functions, the sonodynamic nanocatalyst is wrapped with M1 macrophage membranes overexpressing PD-1, and is jointly loaded into a 3D printed bioadhesive GelMA-based hydrogel together with lipid nanoparticles loaded with a targeted CD300ld small interfering RNA, so that precise implantation of the cervical canal is realized. After ultrasonic activation, the system realizes tumor-killing ROS generation and selective silencing of PMN-MDSC-derived immunosuppression.

The application discloses a near-infrared photothermal molecule, a preparation method thereof and application of the near-infrared photothermal molecule in a light-responsive polyimide material. The structure of the near-infrared photothermal molecule is shown in the following formula. The light-responsive polyimide material is prepared by designing the photothermal molecule with a donor-acceptor-donor configuration, which can not only avoid the agglomeration phenomenon of inorganic particles doped in the polymer, well maintain the mechanical properties of the original polymer, but also realize the high-efficiency non-radiation transition ability of the photothermal molecule in the polymer. The obtained light-responsive polyimide material has an extremely fast response speed to infrared light and realizes reversible response. When the light-responsive polyimide material is irradiated by near-infrared light, the light-responsive polyimide material immediately produces a sharp deformation. After the near-infrared light is turned off, the light-responsive polyimide material almost restores to the original shape.

This invention belongs to the field of compound drug technology. It relates to an N-aryl ketone acid cyanine compound with the structure of general formula (I), obtained by a dehydration condensation reaction of a ketone acid compound of formula (II) and a diphenylamine derivative of formula (III) upon heating. The product structure has a donor-acceptor-donor conjugated structure. These compounds are structurally stable, possess good light-harvesting ability, and under laser irradiation, simultaneously exhibit reactive oxygen species generation and photothermal conversion capabilities, combining photodynamic and photothermal properties. They are non-toxic to cells, have good biocompatibility, and can be used as photosensitizers in the combined photothermal and photodynamic therapy of tumors.

The invention relates to the field of organic electrochromic materials, in particular to a transparent conductive material, a preparation method and application. According to the transparent conductive material, an imide-functionalized polar side chain is introduced into a PBDF main chain, n-type conductivity is maintained through a strategy of combining intramolecular donor-receptor adjustment, polar group introduction and in-situ doping polymerization, meanwhile, interfacial ion affinity and volume capacitance are remarkably improved, neutral state residual absorption is reduced, and damp-heat stability is enhanced; and low-voltage driving, high optical modulation degree, low color difference and long-term stability are achieved, and the electrode material is obviously superior to an existing electrode material. Meanwhile, the material disclosed by the invention is suitable for roll-to-roll film preparation by a solution method and can be directly applied to the fields of building energy-saving dimming glass, automobile anti-dazzle rearview mirrors, flexible electrochromic display, energy storage-EC integrated windows / mirrors and the like, and a brand new working electrode solution with high performance and industrialization feasibility is provided for electrochromic products.

This invention relates to the field of organic optoelectronic materials technology, specifically to a co-assembly method, co-assembly, and application for improving the energy transfer efficiency of chromophores. The specific method includes the following steps: co-assembling a donor substance and a perfluoroaromatic hydrocarbon (PFAR) in a solvent system to prepare a donor-PFAR complex; co-assembling an acceptor substance and a PFAR in a solvent system to prepare an acceptor-PFAR complex; and co-assembling the donor-PFAR complex and the acceptor-PFAR complex in a solvent system to prepare a crystallization-induced energy transfer (CELT) precise co-assembly. The donor substance is 9,10-bis(phenylethynyl)anthracene, the PFAR is octafluoronaphthalene, and the acceptor substance is 5,12-bis(phenylethynyl)tetraphenyl. This invention solves the problems of high energy dissipation and low FRET efficiency in the fluorescence resonance energy transfer (FRET) process of donor-acceptor pairs with weak aggregated emission.

Chemiluminescent compositions and systems having at least one donor chemiluminescent molecule, at least one energy acceptor molecule, and at least one host molecule that houses at least two guest molecules, such as a donor chemiluminescent molecule and an energy acceptor molecule, are described. When housed in the host molecule, the two guest molecules are structurally spaced apart to enable resonance energy transfer between the donor chemiluminescent molecule and the energy acceptor molecule. Methods of using the described chemiluminescent compositions and systems are also provided.

The invention belongs to the technical field of detection, and particularly relates to a multi-wavelength excitation near-infrared resonance Raman probe molecule and a preparation method thereof, nanoparticles and application, two donor-acceptor-donor type Raman probes BTA1 and BTA2 are designed and synthesized, the probes have planar molecular structures and are highly conjugated in the alkynyl direction, and the probe has a wide application prospect. The donor-acceptor-donor structure effectively promotes intramolecular charge transfer, so that an absorption spectrum is subjected to red shift to a first near-infrared region, and meanwhile, molecular fluorescence is remarkably reduced. In addition, the planar molecular configuration enhances the intermolecular pi-pi accumulation effect, induces a strong aggregation-induced fluorescence quenching effect, and further inhibits fluorescence emission. Benefited by the synergistic effect of pi electron delocalization and aggregation-induced fluorescence quenching of a molecular skeleton, BTA1 and BTA2 have strong Raman signals under excitation of 488 nanometers, 532 nanometers, 633 nanometers and 785 nanometers, and show excellent compatibility with a commercial laser light source.

The present application relates to the field of organic electrochromic materials, and particularly relates to a kind of transparent conductive material, preparation method and application.The transparent conductive material introduces imide-functionalized polar side chain in PBDF main chain, by intramolecular donor-acceptor regulation, polar group introduction and in-situ doping polymerization combined strategy, while keeping n-type conductivity, significantly improve interface ion affinity and bulk capacitance, reduce neutral state residual absorption and enhance moisture and heat stability, overall realize low voltage driving, high optical modulation, low color difference and long-term stability, significantly better than existing electrode material.At the same time, the material of the present application is suitable for solution method roll-to-roll film, can be directly applied to building energy-saving light control glass, automobile anti-dazzle rearview mirror, flexible electrochromic display and energy storage-EC integrated window / mirror and other fields, provides a new working electrode solution for electrochromic products with high performance and industrialization feasibility.

Provided are a polymer thin-film transistor and a method of fabricating the same. Donor-acceptor copolymer-based field-effect transistors (FETs) have attracted considerable attention from technological and academic perspectives due to their low band gap, high mobility, low cost, easy solution processability, flexibility, and stretchability. Large-area films can be formed through meniscus-guided coating among various solution-processing techniques. 29-Diketopyrrolopyrrole-selenophene vinylene selenophene (29-DPP-SVS) donor-acceptor copolymer-based FETs have already shown excellent performance due to their short π-π stacking distance and strong π-π interaction. Charge carrier mobility of these types of semiconductor materials significantly depends on an applied electric field. Accordingly, detailed analysis of the electric-field dependency of charge carrier mobility is necessary to understand the transport mechanism within the material. Therefore, 29-DPP-S VS-based FETs are fabricated by varying the blade coating (BC) speed of a semiconductor layer. The effect of the BC speed on the electrical characteristics of the FETs is studied through the analysis of electric-field-dependent mobility. The results show that the charge carrier mobility of different FETs depends on the applied electric field and that the type of dependency is Poole-Frenkel. At an optimized BC speed (2 mm s−1), the device shows maximum zero-field mobility (3.39 cm2V−1s−1) due to the low trap density within the conductive channel.

A dianthracene of Formula (II), wherein each R is the same or different, and R is a substituent wherein [4+4] cycloreversion of the dianthracene of Formula (II) to corresponding donor- acceptor anthracenes discharges energy in an amount from 80 kJ / mol to 200 kJ / mol, or 90 to 150 kJ / mol, or 90 to 130 kJ / mol, and / or R is a substituent wherein reversion of the dianthracene of Formula (II) to donor-acceptor anthracenes of Formula (I) is self-activating, and / or R is C1-4 alkyl, C1-4 alkoxy, or a combination thereof; uses, methods of storing thermal energy, and thermal energy systems including the dianthracene.

According to the two-dimensional platinum (II)-acetylene organic framework material and the preparation method and application thereof, due to the fact that the two-dimensional platinum (II)-acetylene organic framework material is provided with a molecular potential well and a double donor-acceptor structure at the same time, the two-dimensional platinum (II)-acetylene organic framework material has excellent photoelectric performance, and it is proved that the two-dimensional platinum (II)-acetylene organic framework material has huge application potential in the field of data storage and calculation. According to the invention, the material is applied to a photon memristor, and excellent light modulation multi-mode non-volatile resistance change characteristic is realized. The RC system in the sensor based on the device can adapt to multi-task processing, the accuracy rate of static number recognition exceeds 90.775%, the accuracy rate of dynamic letter recognition exceeds 89.6%, and the NRMSE of waveform classification is 0.1. According to the method, the theoretical basis of the photon memristor on the molecular level is supplemented, the bottleneck of separation of sensing, storage and calculation units in an existing calculation system is overcome, and a promising material-algorithm collaborative strategy is provided for designing RC in an efficient sensor for edge calculation.

This invention discloses a 1,3-dithioheterocyclic fused naphthalenetetracarboxylic acid diimide derivative, a near-infrared II photothermal molecule containing it, its preparation method, and its applications, belonging to the field of biomedical technology. The thioheterocyclic fused naphthalenetetracarboxylic acid diimide derivative provided by this invention has a donor-acceptor-donor configuration. The thioheterocyclic fused naphthalenetetracarboxylic acid diimide derivative and doxorubicin are co-encapsulated in a temperature / pH dual-responsive nanogel matrix to form a PND core. Nasopharyngeal carcinoma tumor cell membranes expressing growth arrest-specific gene 6 are coated on the PND surface to construct a nanodecoy with homologous targeting capability. This integrates four major functions—homological targeted delivery, dual-mode imaging guidance, local chemotherapy-photothermal synergistic therapy, and systemic metastasis inhibition—into a single platform, simultaneously tackling the dual challenges of in situ treatment of nasopharyngeal carcinoma and prevention and control of lung cancer cell metastasis.

The invention discloses a 1, 3-disulfur heterocyclic ring fused naphthalene tetracarboxylic acid diimide derivative, a near-infrared two-region photo-thermal molecule containing the 1, 3-disulfur heterocyclic ring fused naphthalene tetracarboxylic acid diimide derivative as well as a preparation method and application of the 1, 3-disulfur heterocyclic ring fused naphthalene tetracarboxylic acid diimide derivative and the near-infrared two-region photo-thermal molecule, and belongs to the technical field of biomedicine. A sulfur heterocycle fused naphthalene tetracarboxylic acid diimide derivative and adriamycin are jointly encapsulated in a temperature / pH dual-response type nanogel matrix to form a PND core, and the surface of PND is coated with a nasopharyngeal carcinoma tumor cell membrane of a high-expression growth arrest specific gene 6, so that the nano bait with homologous targeting capability is constructed. The four functions of homologous targeted delivery, dual-mode imaging guidance, local chemotherapy-photo-thermal synergistic treatment and systematic metastasis inhibition are integrated on a single platform, and the dual problems of nasopharyngeal carcinoma in-situ treatment and lung cancer cell metastasis prevention and control are synchronously solved.

The present invention discloses donor-acceptor structured, aggregated-induced emission fluorescent compounds with deep-red (DR) or near-infrared (NIR). The present invention also shows application in bio-imaging or optoelectronic devices with the fluorescent compounds.

The application discloses a kind of fluorine boron pyrrole fluorescent compound with fixed donor structure, by using vinyl bridge, donor moiety pyrene and carbazole are connected to the alpha position of BODIPY core, to prepare two molecules with fixed donor-acceptor conformation, improve fluorescence quantum yield, can produce narrow spectrum with very narrow half peak width, high color purity fluorescent emission.Simultaneously, the fluorine boron pyrrole fluorescent compound with fixed donor structure in the present application has super high near-infrared light emission in organic solvent.The fluorine boron pyrrole fluorescent compound with fixed donor structure can efficiently improve π electron delocalization by vinyl bridge, can make carrier injection and transmission more balanced, improve device performance, so it has significant economic value in the application of light-emitting device, light-emitting material and display material, intelligent material and the like.