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

The invention provides a conjugated polymer with a side chain containing a triazine group as well as a preparation method and application of the conjugated polymer. The conjugated polymer provided by the invention has a structure represented by formula (I) (as shown in the description). By selecting a specific polymer unit and a proportion of the specific polymer unit, the concentration quenching effect of light-emitting kernel with an E-form delayed fluorescence emitting effect is adequately inhibited, and therefore, the photoluminescence quantum efficiency is remarkably improved; and an electroluminescence device prepared from the conjugated polymer is improved, meanwhile, a roll-off effect of the electroluminescence device under a high light condition is effectively inhibited. Besides, the preparation method of the polymer is simple, and when the polymer is used for preparing a device, the device can be prepared by virtue of simple solution processing manners such as spinning and spray ink printing, so that the preparation method of the electroluminescence device is greatly simplified.

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.

Disclosed is a preparing method for organic white LED illumination light source with high color-rendering index and adjustable color temperature. Four dyes, including blue, green, yellow and red dyes, are selected. Either two dyes are capable of forming into a complementary color. Blue and yellow dyes are mixed in a light-emitting layer of one host material while green and red dyes are mixed in a light-emitting layer of another host material. By utilizing a preparation of a blue fluorescent material collocating with green and red phosphor materials, the host materials of the two color-complementing light-emitting layers are consistent. The host material selected for the light-emitting layer close to a positive pole has good hole-transmission capability while the host material selected for the light-emitting layer close to a negative pole has good electronic transmission capacity. The host material selected by the blue and yellow light layers is of a hole type, while the host material selected by the green and red light layers is of an electronic type. Manufactured is a white illumination light source with high color-rendering index and adjustable color temperature. Specific technical parameters are provided for manufacturing the illumination light source with high color-rendering index and adjustable color temperature.

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 glass doped 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 temperature furnace 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 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 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 relates to a preparation method of a silicone rubber composite material with fluorescence. The preparation method comprises the following steps: preparing mesoporous silicon dioxide SBA-15 by taking a polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer as a template and tetraethyl orthosilicate as a raw material; preparing a rare earth complex Eu(Pht)3Phen by taking europium oxide (Eu2O3), potassium hydrogen phthalate (KHPht) and 1,10-phenanthroline (Phen) as raw materials; mixing the rare earth complex Eu(Pht)3Phen with the mesoporous silicon dioxide SBA-15, stirring, performing ultrasonic dispersion, volatilizing the solvents, and performing vacuum drying to obtain the mixed powder Eu(Pht)3Phen / SBA-15; and blending the mixed powder Eu(Pht)3Phen / SBA-15 with silicone rubber by a two roll mill, and performing hot pressing and vulcanization to obtain the silicone rubber composite material with fluorescence. The silicone rubber composite material prepared by the invention shows characteristic fluorescence emission peaks of rare earth europium, and has the advantages of high fluorescence intensity, long fluorescence lifetime and the like.

The invention relates to a photoelectric material and a preparation method thereof, particularly to a fluorenyl aromatic phosphine oxide photoelectric material and a preparation method thereof, and aims at solving the problem that carrier injection transmission is unbalanced caused by the fact that aromatic hydrocarbon or arylamine functional groups with large conjugated structures are introduced into a fluorine system. The method includes preparing 2-bromine-(9,9-bis-(diphenylphosphine oxide) ) fluorine; and mixing the 2-bromine-(9,9-bis-(diphenylphosphine oxide) ) fluorine, tetrakis (triphenylphosphine) palladium, tetrabutylammonium bromide and borate and dissolving in tetrahydrofuran, adding in NaOH solution, and obtaining the photoelectric material after reaction, extraction, drying and column chromatography; or mixing the 2-bromine-(9,9-bis-(diphenylphosphine oxide) ) fluorine, carbazole, potassium carbonate, copper iodide and 18-crown-6-ether, adding in a high-temperature solvent, and obtaining the photoelectric material after reaction, extraction, drying and column chromatography. The power efficiency of the photoelectric material prepared through the method can reach 2.19lm / W when the material is used for preparing blue-ray fluorescent devices.

The present invention provides a novel amino-substituted polycyclic aromatic compound, a reactive compound, a polymer compound, a suspension type polymer compound, and a use using same. Specific aminogroups or specific substituents, such as Ra groups and Rb groups, are introduced into a polycyclic aromatic compound in which a plurality of aromatic rings are linked by boron atoms, oxygen atoms, orthe like, thereby increasing options for organic device materials such as organic EL element materials. In addition, by using such a novel amino-substituted polycyclic aromatic compound as a materialfor an organic EL element, it is possible to provide an organic EL element having, for example, excellent light emission efficiency or element life.

The synthesis and application of N-diphenylphosphoroxycarbazole-9-arylfluorene sterically hindered organic light-emitting materials relate to third-generation light-emitting display materials and technologies. The present invention is a kind of N-diphenylphosphoroxycarbazole The azole / 9-arylfluorene sterically hindered organic light-emitting material has a specific design structure as follows: it specifically relates to the preparation method and application in organic light-emitting diode devices. The material has: (1) high triplet energy level; (2) excellent luminous efficiency, high thermal stability and stable amorphous form; (3) three-dimensional large-volume steric hindrance effect can effectively suppress quenching and The dimer emits light; (4) the synthesis method is simple and feasible. A blue organic electroluminescent device was prepared with its preliminary structure as the host material. It shows that this kind of compound has broad application prospect and potential commercial value in phosphorescent organic light-emitting diodes as host materials.

The invention discloses a solid broadband green-light emission crystal material which is as shown in a formula I. Indole and pyrazolone serving as functional structure units are combined through an aza butadiene bridge bond phase to form a bis-heterocyclic organic light-emitting crystal material of aza butadiene bridging. The material has good green-light emission characteristics in crystalline state and solution. The material serving as an organic light-emitting material is used for the fields of light-emitting devices, laser dyes, fluorescence sensing, anti-counterfeiting techniques and biomedical analysis.

The invention provides binuclear cyclic metal platinum (III) complex near-infrared light emitting materials. Compared with disclosed most cyclic platinum (II) complexes, the materials have obviously different advantages and characteristics: (1) an electron donor (D) group with a cavity transmission function is introduced to be combined with an electron-withdrawing oxadiazole (A) group with an electron transmission function to construct a D-A form anion assisted ligand, which facilitates the formation of a binuclear trivalent cyclic metal platinum (III) complex and improvement of the carrier transport balance and the exciton utilization ratio of molecules; (2) the nonplanar platinum (III) complex inhibits concentration quenching effectively; and (3) by introducing anions X, the molecular band gaps are reduced for red shift of light emission of the platinum (III) complex. The ionic binuclear cyclic metal platinum (III) complex can be applied to a light emitting layer of a near-infrared electroluminescence device as a light emitting material, so that the electroluminescence device emits near-infrared rays efficiently.

The invention relates to an autonomous three dimensional polymer thermal activation delayed fluorescence (TADF) material and a preparation method thereof. The autonomous three dimensional polymer TADFluminescent material has a polymer framework based on 3,6-carbazole (PCz-N3) and a skeleton based on a carbazole-triphenylamine alternating copolymer (PTPA-N3); through a click reaction of azide-alkynyl, a TADF light-emitting unit triphenyltriazine-phenoxazine (PxzTrz) and a main body unit 1,3-di-9-carbazolyl benzene (mCP) are grafted to a main chain of the polycarbazole / triphenylamine to complete post-functionalization. The polymer has the advantages of high molecular weight, favorable film-forming property, favorable solubility and favorable thermal stability, and can be used as a luminescent layer material to be applied to organic electroluminescent devices to obtain devices with excellent properties.

The invention relates to an anthracene compound and an organic light emitting diode device. The structure of the anthracene compound is shown as a formula I in the specification. The invention provides the anthracene compound which takes a blue fluorescence unit which emits light through a TTA (triplet state triplet state electron annihilation) luminescence mechanism as a core (guest material unit), takes a flexible non-conjugated side chain L as a connecting unit and takes an arylamino or heteroarylamino structure (host structure unit) as a tail end. After the host material unit, the connecting unit L and the guest material unit are matched, and the anthracene compound has good hole transport capability and is suitable for preparing an OLED device by a solvent processing method.

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.

The invention belongs to the technical field of optical communication, and particularly relates to an optical waveguide amplifier and a preparation method thereof. The preparation method disclosed by the invention comprises the following steps: (1) processing a substrate to form a groove, wherein the substrate is porous glass with a three-dimensional communicated nanoscale pore channel structure; (2) transferring an erbium salt solution to the bottom of the groove, so that erbium ions are diffused into the porous glass to form an erbium-doped waveguide; and (3) depositing the erbium-doped waveguide to enable the erbium-doped waveguide to be sealed by a deposition material which is the same as the porous glass in material, and peforming sintering after deposition to obtain the optical waveguide amplifier. The doping concentration of Er < 3 + > is improved by utilizing the characteristics of the porous glass, the clustering effect of Er < 3 + > is inhibited, and the preparation stability of the optical waveguide amplifier is improved by utilizing a new 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.

For example, an organic EL element having an excellent quantum efficiency can be provided by using, as a material for an organic device, a polycyclic aromatic compound as represented by general formula (1) and having a bulky substituent in the molecule. In particular, the device production process is advantaged because concentration quenching can be suppressed even at relatively high use concentrations. In formula (1), R1, R3, R4 to R7, R8 to R11, and R12 to R15 are each independently hydrogen, aryl, and so forth; X1 is -O- or >N-R (R is, e.g., aryl); Z1 and Z2 are a bulky substituent, e.g., aryl; and at least one hydrogen in the compound with formula (1) may be substituted by halogen or deuterium.

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 near ultraviolet excited red fluorescent powder and a preparation method thereof, and belongs to the field of luminescent materials. The chemical formula of the fluorescent powder is La2SeO6: xEu<3+>, wherein x is larger than 0 and smaller than or equal to 0.2; the fluorescent powder is successfully prepared through a high-temperature solid-phase reaction method; in the doping concentration range, dipole and dipole interaction between Eu<3+> ions is reduced, so that concentration quenching is avoided; and the red fluorescent powder can emit red light at 616 nm under excitation of near ultraviolet light of 393 nm. The preparation method provided by the invention is simple in process, stable in product performance and suitable for industrial production.

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 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.