33results about How to "Avoid concentration quenching" patented technology

The invention relates to an anthracene compound and an organic light-emitting diode device. The structure of the anthracene compound is shown in formula I. The present invention provides a blue fluorescent unit that emits light through a TTA (triplet triplet electron annihilation) luminescence mechanism as a core (guest material unit), a flexible non-conjugated side chain L as a connecting unit, an arylamine group or a hetero The arylamine-based structure (main structural unit) is used as the terminal anthracene compound. The anthracene compound has good hole transport ability after the coordination between the host material unit, the linking unit L and the guest material unit, and is suitable for preparing an OLED device by a solvent processing method.

A method for manufacturing integral chromatic luminous vycor glass, which is characterized in that the method comprises: (1) preparing cellular glass, (2) preparing rare earth with certain concentration or transition metal luminous solion, (3) introducing the rare earth or transition metal luminous solion in the cellular glass by employing the segmental doping method, (4) drying the cellular glassdoped with the rare earth or transition metal luminous solion in the air at a temperature of 200-800DEG C and (5)placing the dried cellular glass doped with the luminous solion in a high temperaturefurnace and eliminating micropores to form dense, transparent and integral chromatic luminous vycor glass via solid-phase sintering of air at a temperature of 1100-1250DEG C or reducing atmosphere. The glass of the invention is colorless in appearance, dense and transparent, and can emit light with a plurality of colors when being shined by ultraviolet lamp. The method is simple in manufacturing process, needless in binding agent and low in cost, and has perfect optical property, chemical stability and mechanical strength, which are similar to that of quartz glass.

The invention discloses a preparation method for an erbium-ytterbium-doped polycrystalline oxide film, and particularly relates to an ErxYbyZnAl (2-x-y) O4 polycrystalline oxide film material and a preparation method thereof. The erbium-ytterbium-doped polycrystalline oxide film comprises the components by mass percent as follows: 0.9%-11.8% of erbium, 4.8%-12.2% of ytterbium, 43.6%-52% of zinc, and 32.4%-42.3% of aluminum. The preparation method comprises the steps as follows: firstly, an alloy sputtering target with the general formula of ErxYbyZnAl (2-x-y) is prepared; secondly, an alloy film of ErxYbyZnAl (2-x-y) is prepared by adopting a direct-current magnetic-control sputtering technology; and finally, the ErxYbyZnAl (2-x-y) O4 polycrystalline oxide film is prepared in the oxygen atmosphere of a high-temperature furnace through annealing. The prepared erbium-ytterbium-doped oxide material can realize high erbium-ytterbium doping density, and meanwhile can realize the effective fluorescence emission of Er at a wave band of 1540 nm.

The present invention discloses a polyketene compound shown as a formula I. Two fluorophenylindole functional groups are connected through a polyene dione bridge bond to form the polyketene organic light-emitting material having a bi-fluorescence emitting characteristic, and the material is endowed with a solid red light emitting characteristic, compatibility and processability. The polyketene compound as the bi-fluorescence emitting organic light-emitting material shows a good red light emitting characteristic in a solid state. The polyketene bi-fluorescence emitting organic light-emitting material can be adopted directly as a red light emitting material and used in fields such as light-emitting devices, laser dye, anti-counterfeiting technology, light-converting materials, fluorescence sensitivity and biomedical analysis.

The invention provides a conjugated polymer containing a triazine group in the side chain and its preparation method and application. The conjugated polymer provided by the invention has a structure of formula (I), and the conjugated polymer provided by the invention is obtained by selecting The specific polymer unit and the selected ratio of the specific polymer unit enable the concentration quenching effect of the luminescent nucleus with E-type delayed fluorescence emission to be fully suppressed, thereby significantly improving its photoluminescence quantum efficiency. The efficiency of the electroluminescence device prepared by this polymer is also improved, and at the same time, the roll-off effect at high brightness is effectively suppressed. In addition, the preparation method of the polymer provided by the present invention is simple, and the obtained polymer can be prepared by simple solution processing methods such as spin coating and inkjet printing when used to prepare devices, which greatly simplifies the preparation method of electroluminescent devices.

The invention discloses a difunctional solid-state broadband red light emission organic light-emitting material having a structure shown in a formula I and a preparation method thereof. According to the solid-state broadband red light emission organic light-emitting material and the preparation method thereof disclosed by the invention, novel solid-state broadband red light emission piperidone organic light-emitting material with upconversion fluorescence characteristic are formed by combining piperidone with fluoro-phenylindole functional structure units through polyene bridged bonds. The difunctional solid-state broadband red light emission organic light-emitting materials provided by the invention have the characteristics of solid-state broadband red light emission and upconversion fluorescence, stable molecular structure, multiple functions, convenience in use and high practicality. (The formula I is shown in the description).

The invention relates to a neutral iridium complex with a bidentate ligand, and a preparation method and application thereof, and belongs to the technical field of photoelectric functional organic materials. The invention concretely relates to the preparation method for the neutral iridium complex with the bidentate ligand, and application of the neutral iridium complex to organic electroluminescent devices, bioimaging and biolabeling. The neutral iridium complex employs a phenylquinoline derivative as a cyclometalated ligand, and has the general structural formula of [Ir(C^N)2(N^N)]. The material is simple in synthetic steps and mild in conditions. By introducing different main-group elements for changing into different cyclometalated ligands, adjusting on photophysical properties of the complex is realized, and the complex has relatively high quantum efficiency, so that the complex has great application prospect in the field of organic photoelectric functional materials.

The invention discloses an electroluminescent material with bipolar carrier transport performance and its application as a main body material of an organic electroluminescent device. The luminescent material is 3,5-dicarbazole-1 with hole transport performance The compound of the benzene unit and the benzimidazole derivative unit with electron transport performance is simple, and the present invention uses it as the main material of the light-emitting layer to make an electroluminescent device, blue light, red light, yellow light, green light and White light emitting devices have high current efficiency, power efficiency, external quantum efficiency, and spectral color rendering index, and have good stability in a large voltage range, and have broad application prospects in the fields of full-color display and solid-state lighting. It can be widely used in the field of organic electroluminescence.

The invention discloses a fluoro phenylindole compound which adopts a structure shown in formula I, application of the fluoro phenylindole compound as a red organic luminescent material, and a preparation method of the fluoro phenylindole compound. The fluoro phenylindole compound is obtained through a reaction between cyclohexanone and 3-(3-(4-fluorophenyl)-1-isopropyl-1H-indole-2-yl) acrolein under an alkaline condition. The preparation method is simple to operate, convenient for synthesis and easy for purification; the obtained fluoro phenylindole compound is stable in structure and can be utilized for fluorescence conversion on a strong red color displayed under 800-nm laser excitation, thereby having potential application values in such fields as luminescent equipment, anti-counterfeit technologies, laser dye and fluorescence sensing; the research field of the fluoro phenylindole compound is expanded.

The invention discloses an organic electroluminescent device, comprising a substrate, an anode layer and a cathode layer, wherein the anode layer or the cathode layer is positioned on the surface of the substrate. The organic electroluminescent device also comprises organic functional layers between the anode layer and the cathode layer. The organic functional layers at least include a luminescent layer which emits light by being driven by an applied power source. The luminescent material combines the organic fluorescent dye with the matrix molecules by chemical bonds by way of chemical crosslinking, so that energy transfer of the luminescent material is improved, thus not only avoiding the complex process caused by doping, but also avoiding the dye from being separated in the matrix molecules, optimizing the device structure and improving the luminescent efficiency, brightness and stability of the device.

The invention relates to an organic blue-fluorescent material and a preparation method thereof. The method comprises the following steps: compounding 1, 3-di-p-nitrophenyl acrylketone; compounding 1-phenyl-3,5-di-p-nitrophenyl pyrazoline; compounding 1-phenyl-3,5-di-p-aminophenyl pyrazoline; compounding a polymer. The preparation method of the organic blue-fluorescent material provided by the invention is simple in preparation technology, easy for purification and low in cost, and the prepared polymer is excellent in solubleness, good in film-forming property and high in fluorescence intensity, and can emit blue light; the luminescent functional group of the organic blue-fluorescent material is locked in a functional film to avoid concentration quenching, so that the service life of a luminescent device is prolonged, and the further development and application of the series of materials are possible.

The near-infrared luminescent material of a class of ionic dinuclear cyclometal platinum (III) complexes proposed by the present invention has significantly different advantages and characteristics compared with most existing disclosed cyclometal platinum (II) complexes: ( 1) Introduce an electron-donating (D) group with a hole-transport function, combined with an electron-withdrawing oxadiazole (A) group with an electron-transport function, to construct an anion auxiliary ligand with a D-A configuration, which is conducive to the formation of The dual-nuclear trivalent ring metal platinum (III) complex improves the carrier transport balance and exciton utilization of the molecule; (2) the non-planar platinum (III) complex effectively suppresses concentration quenching; (3) the negative ion The introduction of X reduces the molecular band gap and makes the luminescence of platinum(III) complexes red shift. The ionic dinuclear cyclometal platinum (III) complex can be used as a light-emitting material in the light-emitting layer of a near-infrared electroluminescence device, so as to realize efficient near-infrared emission of the light-emitting device.

The invention discloses an amino acid-rare earth compounded high-efficiency phosphor. The amino acid-rare earth compounded high-efficiency phosphor is synthesized by compounding a deprotonated amino acid with a rare earth element at normal temperature under normal pressure through a one-step technology, wherein the crystal phase of the phosphor formed through compounding the amino acid with the rare earth element is a hexagonal system nano-crystal powder, the geometry of the phosphor is sheet nano-particles, the particle size of the particles is 15-30 nm, and a molar ratio of the amino acid to rare earth element ions is 8:1 to 1:4. The invention also discloses applications of the above fluorescent material in the of the levorotation and dextrorotation chiral content detection of the amino acid and in printers as fluorescent ink. Experiments confirm that the light quantum yield of the phosphor reaches 26.67% or above, and the phosphor has good fluorescence strength and good performances, is an ideal safe fluorescent material with high luminescence property, and also has the advantages of simple preparation method, realization of large-scale preparation, and wide application prospect.