56 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.

The present disclosure is related to organic acceptor-donor-acceptor compounds as non-fullerene acceptors for use in organic photovoltaics.

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.

The invention belongs to the technical field of polymer photocatalytic material synthesis, and particularly relates to a controllable defect type three-dimensional COF material and preparation and application thereof. The controllable defect type three-dimensional COF material is a COF formed by connecting a Td symmetric ligand and a C3 planar ligand with a linear connector and a side chain substituted linear connector through covalent bonds. According to the invention, through a general node connection number reduction strategy, a C3 planar ligand part is used for replacing a Td symmetric ligand node, a light absorption unit is introduced into a three-dimensional COF under the condition that a basic topological structure is kept unchanged, and a linear connector part replaced by a side chain is used for replacing a linear connector, so that a space electron supply-absorption characteristic is introduced, and the light absorption unit is introduced into the three-dimensional COF; benefited from the introduction of a light absorption unit and donor-acceptor arrangement in a 3D space, the optimized photoelectric structure can realize efficient charge separation through the three-dimensional donor-acceptor arrangement, so that efficient photocatalysis is realized.

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.

A solar cell device having a solid state light absorber region that incorporates a donor-acceptor particle structure. The particle structure includes acceptor particles that generate a flow of electrons in the solid state light absorber region in response to absorbed photons; and donor particles comprising a phosphorescent material, wherein each donor particle is coupled to a group of acceptor particles, and wherein the phosphorescent material absorbs high energy photons and emits lower energy photons that are absorbed by the acceptor particles.

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 an electron donor-acceptor-donor type ruthenium complex as well as a preparation method and application thereof. The structural formula of the ruthenium complex is as follows: # imgabs0 #, wherein X <-> represents an anion. The ruthenium complex disclosed by the invention has a relatively strong photodynamic treatment effect on a human non-small cell lung cancer cell line (A549 cells). The complex can be excited only by red light illumination, and has higher compatibility with existing medical equipment; meanwhile, the light penetrability of red light is weaker than that of near-infrared light, so that the red light is more suitable for superficial tumor treatment. Due to the moderate PI value, immunosuppression or tissue damage caused by excessive killing can be avoided, so that the compound can be suitable for multiple times of treatment or combined use with other therapies (for example, when the compound is combined with chemotherapy, immunotherapy or radiotherapy and the like, the compound can be used as an auxiliary treatment means, and active oxygen (ROS) is generated through photocatalysis to enhance the effects of other therapies).

The invention discloses a photosensitizer with high active oxygen generation capacity, the structure of the photosensitizer is shown as a formula (I), D is an electron donor, namely an R-substituted triphenylamine structure, A1 and A2 are electron acceptors and are respectively an X-substituted benzodiazole ring and an onium bromine compound with trimethylamine at the tail end, the two electron acceptors are connected through a double bond, and the structural formula (I) is shown in the description. Compared with a single-acceptor photosensitizer, the double-acceptor photosensitizer connected through double bonds has higher donor-acceptor strength, so that the reduction of delta EST is facilitated, and further, the efficient ROS generation capability is realized. # imgabs0 # is represented by formula (I).

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.

A solar cell device having a solid state light absorber region that incorporates a donor-acceptor particle structure. The particle structure includes acceptor particles that generate a flow of electrons in the solid state light absorber region in response to absorbed photons; and donor particles comprising a phosphorescent material, wherein each donor particle is coupled to a group of acceptor particles, and wherein the phosphorescent material absorbs high energy photons and emits lower energy photons that are absorbed by the acceptor particles.

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 invention discloses an electron acceptor-donor-acceptor type ruthenium complex as well as a preparation method and application thereof. The structural formula of the ruthenium complex is as follows: # imgabs0 #, wherein X <-> represents an anion. The ruthenium complex disclosed by the invention has a relatively strong photodynamic treatment effect on a human non-small cell lung cancer cell line (A549 cells). Under the condition of illumination, the compound has very strong ability of inhibiting growth and proliferation of human non-small cell lung cancer cells (IC50 is 0.0189 mu M), and under the condition of darkness, the cytotoxicity of the compound is greater than 100 mu M, and the phototherapy index PI is as high as 5291. The invention has important significance for researching metal drugs for resisting non-small cell lung cancer.

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 discloses a donor-acceptor interaction two-dimensional perovskite solar cell material preparation method, and relates to the field of solar cells, and the method comprises the following steps: S1, sequentially using soapy water, detergent water, deionized water, ethanol and an ultraviolet-ozone cleaning machine to clean a substrate; according to the preparation method of the donor-acceptor interaction two-dimensional perovskite solar cell material, an electron acceptor TCNQ is introduced, a donor-acceptor interaction framework between PEA and TCNQ is constructed, exciton binding energy in two-dimensional perovskite is remarkably reduced, carrier transport performance is improved, and experimental results show that after a solar cell based on PEA 2MA4Pb5I 16 is optimized, the donor-acceptor interaction two-dimensional perovskite solar cell material can be used for preparing a donor-acceptor interaction two-dimensional perovskite solar cell material. The photoelectric conversion efficiency is improved from 13.30% to 18.06%, and the hole diffusion length is improved from 856.48 nm to 1332.10 nm.

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.