2605 results about "Organic dye" patented technology

A plastic spectacles lens containing an organic dye instead of a neodymium compound and having an optical transmission equivalent to a plastic spectacles lens containing a neodymium compound is provided. The plastic spectacles lens comprises a plastic lens wafer formed from a thermosetting or thermoplastic resin, or the plastic lens wafer and one, or two or more component layers formed on at least one side of the plastic lens wafer, and an organic dye satisfying the specific conditions.

A multicolor organic EL element having a light emitting layer containing at least two organic dyes that can act as light emitting center (luminescence center), wherein at least one of said organic dyes is modified so as to change the colors of the light emitted from the element, and a method for manufacturing the element, and a display using the element.

An organic photovoltaic conversion device, such as a solar cell includes a matrix material, such as a polymer matrix material, carbon nanotubes dispersed in the matrix material, and photovoltaic organic molecules, such as organic dye molecules, attached to defect sites on the carbon nanotubes.

An imaging element having a photoelectric conversion film which has a laminated structure comprising a p-type semiconductor layer and an n-type semiconductor layer between a pair of electrodes, wherein at least one of the p-type semiconductor and the n-type semiconductor contains an organic compound with controlled orientation; a photoelectric conversion film having at least one organic dye compound, wherein the organic dye compound forms a J aggregate, or the angle between the spectral absorption transition dipolar moment of the organic dye compound and the photoelectric conversion film plane is 40° or less, a photoelectric conversion element and an imaging element; and a method of applying an electric field thereto, and an imaging element which comprises a photoelectric conversion film (a photosensitive layer) having a bulk heterojunction layer as an intermediate layer, or a photoelectric conversion film having two or more repeating structure units of a pn junction layer comprising a p-type semiconductor layer and an n-type semiconductor layer between a pair of electrodes.

A flickerless light source comprising a transparent or semitransparent diffuser, a lightpipe with a patterned surface inside the diffuser, and an LED light source attached to each end of the lightpipe is disclosed. The patterned surface of the lightpipe diffuses or reflects light emitted by the LED light sources and through the lightpipe to provide a light with uniform brightness and intensity. The lightpipe is coated with a thin layer of visible-light transparent material which is doped with organic dye molecules. The organic dye has strong ultraviolet light absorption characteristics. By changing the doping concentration of the dye molecules the coating can become total opaque or semi-transparent to certain wavelengths and selective wavelength conversion is obtained. In this way light color, brightness, and intensity can be varied or controlled.

An organic dye used in a dye-sensitized solar cell is described, having general formula (1):

D-Sp1-Ch-Sp2-Acc-Y  (1)

wherein the groups D, Ch, Acc and Y are conjugate with each other, the group D is a donor group, the group Ch is a chromophore rendering low HOMO-LUMO gap or a polyaromatic chromophore, the group Acc is an acceptor group, the group Y is an anchoring group, and each of Sp1 and Sp2 represents a single bond or a spacer group allowing conjugation between the groups D and Ch or between the groups Ch and Acc.

The invention discloses a high-efficiency graphene/silver phosphate composite visible light photocatalyst and a preparation method thereof, belonging to the technical field of composite materials and environmental management photocatalysis. The preparation method comprises the following steps: dissolving graphene oxide in water, and carrying out ultrasonic treatment to obtain a graphene oxide dispersed liquid; dissolving silver nitrate in deionized water, gradually and dropwisely adding into the graphene oxide dispersed liquid while stirring to obtain a mixed solution, uniformly stirring, and aging; dropwisely adding a prepared disodium hydrogen phosphate or sodium dihydrogen phosphate solution into the graphene oxide-silver nitrate mixed solution, continuing stirring, transferring into a hydrothermal reaction kettle, carrying out hydrothermal reaction, and cooling to room temperature; and washing the reaction product, and carrying out vacuum drying to obtain the visible light photocatalyst. The invention has the advantages of wide material sources and simple preparation process; and the obtained composite material has the advantages of controllable structure and regular pattern, and has high-efficiency degradation effect on organic dyes rhodamine B and methylene blue with certain concentration under the visible light irradiation.

Disclosed herein are a composite light-emitting material, which includes two or more light-emitting materials selected from an inorganic phosphor, a semiconductor nanocrystal and an organic dye in which the surfaces of the two or more light-emitting materials are coated; and a light-emitting device comprising the same, so as to improve the luminous efficiency and lifetime.

Provided are a cyclopentaphenanthrene-based compound and an organoelectroluminescent device employing the same. The cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, color stability, and thermal stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, an emitting layer, in an organoelectroluminescent device, and as an organic dye or an electronic material such as a nonlinear optical material.

According to one embodiment, a write-once type information storage medium comprises an organic dye based recording material having sensitivity at a wavelength of 405 nm and at a recording wavelength in the range of 600 nm to 700 nm, wherein, when absorbance of a maximum absorption wavelength in the vicinity of 405 nm is defined as 1, the absorbance is 5% or more at any wavelength in the range of 600 nm to 700 nm.

The invention relates to a biomass magnetic carbon material for degrading organic dye. The material is prepared by mixing a biological raw material and an iron precursor at a ratio of (2-20kg):1kg. Meanwhile, the invention also discloses a preparation method of the biomass magnetic carbon material. The biomass magnetic carbon material provided by the invention is cheap and efficient and has double effects of adsorption catalysis and degradation; serving as an efficient catalyst in a process of constructing a Fenton-like system for treating high-concentration wastewater, the biomass magnetic carbon material has high catalytic activity in thoroughly oxidizing and degrading organic dye; the degradation effect is better than that of a ferrous ion homogeneous catalysis reaction and a Fenton-like reaction taking ferroferric oxide as a catalyst.

The invention discloses a preparation method of a nano-crystalline cellulose-based composite aerogel type organic dye absorption material. The method comprises the following steps: preparing nanofibers having functional surfaces by combining a chemical pretreatment method and a mechanical treatment method; and mixing the nanofibers and a natural absorption material to prepare composite aerogel which is used as the organic dye absorption material, wherein the porosity of the prepared composite aerogel is up to 99% or more, the decolourization ratio of the prepared material on organic dyes can exceed 90%, and the prepared material can be widely applied to absorbing the various water-soluble organic dyes.

According to one embodiment, a storage medium comprises a transparent resin substrate on which a groove is formed, a recording layer formed on the groove on the transparent resin substrate, the recording layer using an organic dye material and recording information with a light beam of 620 nm or less in wavelength, a reflection layer formed on the recording layer, and a prevention layer formed between the recording layer and the reflection layer, the prevention layer preventing degradation of characteristics of the reflection layer.

The invention provides a novel magnetic porous metal-organic skeleton (Fe/C@ MOF) composite absorbent and a preparation method thereof. Biomaterials which are extensive in source and low in price are served as the carbon source; the Fe<3+> ions are served as the precursor of the magnetic material; under the microwave-assisted condition, magnetic Fe/C material is quickly synthesized; then, the method of self-assembly layer by layer is adopted, so as to alternately deposit metal central ions and organic ligands on the surface of the magnetic Fe/C material and achieve the in-situ synthesis of the MOF; the magnetic Fe/C@ MOF composite is prepared. The preparation method provided by the invention is simple in the preparation technology; moreover, the prepared magnetic Fe/C@MOF composite has the advantages of large specific surface area, high adsorption capacity, capability of magnetic separation, reutilization and the like. The prepared composite simultaneously has the capability of adsorbing and removing organic dye and heavy metal ions. Therefore, the prepared composite has favorable application prospects in the fields of environmental remediation, wastewater treatment, separation science and the like.

A rewritable optical information recording medium including a recording layer composed of an organic dye film is provided, in which recording and erasing information can be performed reversibly by laser light irradiation. A rewritable optical information recording medium including at least one organic dye film which is substantially made of only at least one kind of organic dye compounds as a recording film is provided. The recording and erasure of information are performed by a reversible physical change of the organic dye film substance caused by laser light irradiation. Specifically, data recording is performed by a physical change locally caused by the irradiation of recording laser light, data reproduction is performed by detecting change in intensity of returned light of reproducing laser light having less power than the recording laser light, and data erasure is performed by applying at least once continuous light or pulse light having laser power more than the reproducing laser light and less than the recording laser light. The physical change is a change in shape.

The invention relates to a preparation method and application method of a titanium dioxide nanosheet supported MIL-100 (Fe) composite photocatalysis material, belongs to the field of titanium dioxide photocatalysis, and especially relates to the field of titanium dioxide nanosheet supported porous metal organic skeleton (MOFs) composite materials. The preparation method comprises the following steps: 1, uniformly stirring tetrabutyl titanate and hydrofluoric acid at normal temperature, putting the obtained mixture in a hydrothermal reaction kettle, carrying out a reaction, separating the obtained material, washing the separated material, and drying the washed material to obtain titanium dioxide nanosheets; and 2, uniformly dispersing the titanium dioxide nanosheets in an anhydrous ethanol solution of iron trichloride, carrying out magnetic stirring at normal temperature for 15 min, carrying out suction filtration separation to obtain a product, dispersing the product in an anhydrous ethanol solution of trimesic acid, carrying out a 50-80 DEG C water bath reaction for 20-50 min, carrying out suction filtration separation to obtain a product, and repeating above processes in step 2 2-50 times to obtain the titanium dioxide nanosheet supported MIL-100 (Fe) composite photocatalysis material. The catalyst prepared through the method is especially suitable for catalytic degradation of high-concentration organic dyes (such as methylene blue) under visible light irritation) to reach a very high degradation rate.

The present invention relates to an organic dye-sensitized photoelectric conversion device and a solar cell utilizing the same. In accordance with a demand to now for development of an organic dye-sensitized photoelectric conversion device with high conversion efficiency and high practicability using an inexpensive dye, there is provided in the present invention, a photoelectric conversion device with high conversion efficiency by producing a photoelectric conversion device by sensitizing fine semiconductor particles with a methine dye having specified skeleton.

The invention discloses a preparation method of a graphene-based composite separation membrane device. The preparation method comprises the following steps of (1) dissolving a graphene oxide raw material in deionized water to be processed in ultrasonic bath to obtain the graphene oxide solution; (2) mixing and blending the graphene oxide solution with alkali under a given temperature, and then washing the mixture with deionized water to obtain the reduced graphene oxide dispersion liquid; (3) pouring the graphene dispersion liquid into a suction filtering flask to be filtered, and drying the graphene dispersion liquid in a vacuum drying box to obtain a graphene-based composite separation membrane; and (4) placing the graphene-based composite separation membrane inside a filtering device to obtain the graphene-based composite separation membrane device. The preparation method is simple and convenient, low in cost and environment-friendly, is suitable for industrialized mass production, has high separation efficiency, large water flux and good flexibility, is resistant to acid, alkali and high temperature and can be used in the fields of water treatment, solvent separation, nano-particle screening and the like. The separation membrane device can realize high-efficient separation of nano particles, organic dye, biological hormenes and metal salt.

The present invention provides a semiconductor electrode of organic dye-sensitized metal oxide having a semiconductor layer of metal oxide that can be easily prepared, and an organic dye-sensitized solar cell. The semiconductor electrode of organic dye-sensitized metal oxide comprises a substrate having a transparent electrode thereon, a semiconductor layer of metal oxide provided on the electrode and an organic dye absorbed on a surface of the semiconductor layer, the semiconductor layer being formed by a vapor deposition process.

The invention discloses a graphene oxide/nano cellulose aerogel and a preparation method and an application thereof, and belongs to the technical field of aerogel material. The aerogel is prepared by the method including the following steps: 1) dispersing nano cellulose in hydrochloric acid to prepare a nano cellulose dispersion liquid; 2) mixing a graphene oxide dispersion liquid with the nano cellulose dispersion liquid obtained in the step 1) evenly, and carrying out a hydrothermal reaction at the temperature of 170-190 DEG C to obtain a hydrogel; and 3) carrying out freeze drying of the hydrogel obtained in the step 2) to obtain the aerogel. According to the graphene oxide/nano cellulose aerogel provided by the invention, nano cellulose and graphene oxide as raw materials are subjected to hydrothermal reaction to prepare the hydrogel, the hydrogel is further subjected to freeze drying to obtain the final product. Compared with a graphene oxide aerogel, the aerogel has better removal effect on phenol in a phenol aqueous solution, can be used for removal of organic dye molecules or other impurities in sewage, and efficiently purifies the sewage.

An optical recording medium of dual layer type is provided which has at least a first substrate, a first recording layer capable of optical recording, a translucent reflecting layer, an intermediate layer, a second recording layer capable of optical recording, and a second substrate in this order from a side where a laser beam for recording, reproduction, or recording/reproduction is applied, wherein the first recording layer is made of an organic dye and the second recording layer is made of a metal material having a higher reflectivity than the organic dye. The optical recording medium provides sufficient signal amplitudes from both recording layers during reproduction, and gives compatibility with a typical optical recording medium during reading.

A cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, and color stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, an emitting layer, in an organoelectroluminescent device, and as an organic dye or an electronic material such as a nonlinear optical material.

The invention discloses a preparation method of a hydrogel with adsorption and catalysis functions. The preparation method comprises the following steps of: preparing the hydrogel, and loading at least one noble metal to a hydrogel carrier; drying the obtained loaded type hydrogel. The preparation process of a loaded type hydrogel material is simple, moderate in condition and suitable for industrial production; an obtained product can be used for effectively degrading the organic dyes which are contained in a water body and include anionic and cationic dyes and still has better catalytic property after being recycled for multiple times.

The present invention belongs to the field of photocatalyst material technology, and is especially use of bismuth oxyhalide. Bismuth oxyhalide as photocatalyst material is prepared through one solid phase or liquid phase process. It has the chemical composition of BiOX, where, X=Cl, Br or I; and laminated crystal confuration formed with [Bi2O2] and [X] structural layers stacked alternately in the C axis direction. Bismuth oxyhalide has excellent photocatalytic performance. It is used in degrading organic dye and harmful organic gas, killing bacteria and photolyzing water to produce hydrogen. Supporting nanometer Ag, Pt or other metal particle with powerful electron affinity can raise the photocatalytic performance greatly.