8 results about "Fluorescent polymer" patented technology

The application provides a single-chain super-small fluorescent polymer nanodot modified Bacillus subtilis derived nanometer calcium carbonate composite material (SC-PNPs@CaCO3) as a high-sensitivity fluorescent sensing platform for choline acetyltransferase (ChAT) activity detection. The composite material is synthesized through biological mineralization of Bacillus subtilis, the free radical polymerization method is used to prepare the SC-PNPs with positive charges on the surface, and a stable fluorescent sensing system is constructed through self-assembly. Coenzyme A (CoA) is generated in the ChAT catalytic reaction, which can significantly quench the fluorescent signal of the material, realize high-sensitivity detection of the ChAT activity change, and the detection limit reaches 0.00074 mU / mL. The fluorescent sensing platform can realize real-time monitoring of the ChAT activity change, and reveal the regulation effect of the cholinergic signal pathway in the repair process in a skin repair model. The application provides an innovative technical means for choline acetyltransferase activity analysis, and provides a new research direction for exploring the function of the cholinergic system in skin repair and other physiological and pathological processes.

A dual-layer optical encryption fluorescent polymer waveguide chip based on optical pulse code modulation technology belongs to the field of functional photonic chip technology. It consists of a substrate layer, a buffer layer, a cladding layer, a bottom waveguide layer, and a top waveguide layer. The cladding layer is divided into three parts: a lower cladding layer, a middle cladding layer, and an upper cladding layer. The bottom waveguide is located within the middle cladding layer, and the top waveguide is located within the upper cladding layer. The bottom and top waveguides do not overlap in the chip's top-view plane. The waveguide layer material is obtained by doping fluorescent small-molecule oligomer chromophores into a polymer material. This invention achieves signal optical pulse coding by modulating the pump light power intensity. By detecting changes in optical transmission loss in the fiber optic system, it determines whether eavesdropping has occurred. Eavesdropping is indicated by optical transmission loss exceeding a threshold. False information is displayed in the bottom waveguide for disguise, while the modulated information is transmitted encrypted through the top waveguide, thus solving the problems of limited controllability and insufficient security in traditional encryption technologies.

The present invention is directed to nanoparticle-polymer composites for efficient emission of light. Certain nanoparticle-polymer composites of the present invention have been found to exhibit higher photoluminescence quantum yield and narrower photoluminescence linewidth than the same materials disposed in liquid solvents. In some embodiments, the composites include quantum dots that have a first semiconductor core material made from CuInSexS2-x, CuInGaSexS2-x, AgInSexS2-x, AgInGaSexS2-x, PbS, PbSe, InAs, InP, Cd3P2, CdS, CdSe, and CdTe semiconductor compositions. In some embodiments the composites include a polyolefin elastomer polymer. Furthermore, the tunability of emission peaks from these novel fluorescent polymer composites make them suitable for down-conversion of visible and UV light into visible and NIR light. In some embodiments these nanoparticles are incorporated into solar modules to improve power conversion efficiency.

This invention discloses an aromatic amine polymer containing a sulfone group and its preparation method, belonging to the field of polymer chemistry. The main chain of this sulfone-containing aromatic amine polymer contains the structural segment shown in formula (I): Formula (I); wherein R is selected from alkyl groups having 4 to 12 carbon atoms. This sulfone-containing aromatic amine polymer introduces large-volume aryl sulfone structures on both sides of the nitrogen atom, forming a significant steric hindrance effect. Simultaneously, the strong electron-withdrawing effect and structural stability of the aryl sulfone structures on both sides result in a fluorescent polymer with improved acid resistance and hot water stability.

The application discloses an azobenzene-based heterochain fluorescent polymer and a preparation method and application thereof, and relates to the technical field of heterochain polymer luminescence. The method uses azobenzene epoxide alkane as raw material, and obtains the azobenzene-based heterochain fluorescent polymer through bulk polymerization, melt polymerization or solution polymerization under the action of a catalyst; the azobenzene-based heterochain fluorescent polymer obtained by the method has good solubility in various organic solvents, and the luminescence property of the polymer can be changed by adjusting the concentration and inducing photoisomerization of the azobenzene group, so that the azobenzene-based heterochain fluorescent polymer has good application potential.

An emissive layer for a stretchable organic light emitting diode (OLED) comprises a plasticized film including a thermally activated delayed fluorescence (TADF) polymer and a plasticizer distributed within the TADF polymer. A method of making an emissive layer for a stretchable organic light emitting diode (OLED) comprises co-dissolving a plasticizer and a thermally activated delayed fluorescence (TADF) polymer at a predetermined ratio in a solvent to form a precursor mixture, depositing the precursor mixture onto a substrate to form a coating, and removing the solvent from the coating to form a plasticized film comprising the TADF polymer and the plasticizer distributed in the TADF polymer.

The application discloses a ketone-containing arylamine polymer and a preparation method thereof, and belongs to the technical field of polymer chemistry. The main chain of the ketone-containing arylamine polymer contains a structural fragment shown in formula (I): formula (I); wherein R is selected from one of alkyl with 4-12 carbon atoms. The ketone-containing arylamine polymer introduces bulky aryl ketone structures on both sides of a nitrogen atom, forms a significant steric hindrance effect, meanwhile, the strong electron-withdrawing effect of the aryl ketone structures on both sides is achieved, and thus a fluorescent polymer with intrinsic acid resistance and oxidation medium stability is obtained.

The application discloses a controllable response type fluorescent polymer material and a preparation method and application thereof. The controllable response type fluorescent polymer material is prepared by mixing and reacting a fluorescent monomer solution, a solvent, an acrylamide compound, a metal salt, water, a crosslinking agent solution, a promoter and an initiator. The fluorescent detection material is fixed in a three-dimensional network with stable structure in a covalent bond form through a chemical copolymerization technology, so that disordered migration of the fluorescent detection material in a production, storage and detection process is avoided, the stability of detection is effectively improved, and good result reproducibility is ensured.