78results about How to "High extinction coefficient" patented technology

The invention discloses a method for preparing a graduated color film through a magnetron sputtering machine. The method comprises the following steps that S1, an optical film system is designed; S2,a baffle is designed, and the shape of the baffle is designed according to thickness change of an optical thin film structure simulated by software; S3, vacuum coating is conducted; and S4, color andoptical performance examination is conducted, the color LAB value, visible light reflectivity curve and visible light transmittance curve of a product obtained after vacuum coating are detected, if the test result is qualified, mass production preparation can be made, and if the test result is unqualified, operation returns to the step S1. A transition area of a graduated color film prepared withthe method is natural in gradual color change, the product color is easy to adjust, and graduated color films of different colors and visual effects can be prepared according to user preparations. Compared with electric beam evaporation deposition, a film layer prepared with the magnetron sputtering machine is compact in structure, the refractive index is stable, the film layer is more stable in optical performance, and thus color stability is better.

The present invention relates to squaraine dye containing terminal aminoanthracene or acridine groups and to a process for preparation thereof.

The present invention is related to the field of carbohydrate analysis. More particularly, this invention relates to a simple and inexpensive method for analyzing carbohydrates which can be used to separate mono-, di-, tri- and even poly-saccharides. More specifically, this invention relates to a quantitative and qualitative method for analyzing carbohydrates that may be present in a biological sample by employing a visible dye or chromophore and high resolution polyacrylamide gel electrophoresis.

The invention relates to an organic light-emitting diode (OLED) device which comprises a substrate and an anode, an organic layer and a cathode which are sequentially arranged on the substrate. The cathode is a transparent composite cathode and comprises an alloy layer of low work function metal and silver, a silver layer and an anti-reflection layer arranged on the silver layer. The work function of the low work function metal is smaller than 3.7eV, the molar ratio of the low work function metal and the silver in the alloy layer is 2:1-8:1, the thickness of the alloy layer is 3-11nm, the thickness of the silver layer is 15-30nm, and the thickness of the anti-reflection layer is 30-100nm. Magnesium, lithium, potassium and the like can be wrapped on the periphery of silver atoms when being evaporated with the silver together, the work function of the cathode can be effectively reduced by evaporation in proper proportion, and the cathode cannot absorb a large amount of visible light. The anti-reflection layer increases intensity of transparent light, is large in energy gap and does not affect color purity of the device. The thickness of the alloy layer and the silver layer is low, so that the alloy layer and the silver layer have high light transmittance.

Cobalt polypyridine complexes are interesting alternative redox mediators for large scale manufacturing of dye-sensitized solar cells (DSCs) since they are less aggressive towards metal contacts and absorb less light than iodide/triiodide. Here we have examined the effect of steric properties of triphenylamine-based organic sensitizers and cobalt polypyridine redox mediators on the electron lifetime and overall device performance in DSCs. Matching the steric bulk of the dye and redox mediator was found to minimize recombination and mass transport problems in DSCs employing cobalt redox mediators. Recombination was efficiently slowed down by introducing insulating butoxyl chains on the dye, allowing the use of a cobalt redox mediator with a less steric bulk. The best efficiency of DSCs sensitized with a triphenylamine-based organic dye in combination with cobalt(II/III) tris(2,2′-bipyridyl) match the highest efficiencies obtained so far with iodide-free electrolytes, reaching a 6.3% overall conversion efficiency under AMI.5 condition (1000 Wm-2) and an efficiency of 7.8% at 1/10 of a sun. Organic dyes with high extinction coefficient can thus be used instead of standard ruthenium sensitizers to build thin films DSCs in order to overcome mass transport and recombination limitations associated with the cobalt redox couples. DSCs sensitized with organic dyes employing cobalt redox mediators are promising for low light intensity applications since the efficiency and voltage is high at indoor illumination.

The invention discloses a half cyanine dye compound, a preparation method and an application of the half cyanine dye compound. The half cyanine dye compound has the structural general formula I as shown in the specification. The half cyanine dye compound has a near-infrared emission function, is large in Stokes displacement, simple in structure, easy to prepare and low in toxicity, and can be used as a fluorescent dye. The half cyanine dye compound has response to nucleic acid, is an RNA (ribonucleic acid) selective fluorescent probe and can be used for RNA dying in cells.

The invention relates to a 2mum coherent wind lidar polarization state matching and correcting system, which comprises a 2mum laser, a first single-mode polarization-maintaining fiber, an acoustooptic frequency shifter, a second single-mode polarization-maintaining fiber, a tail fiber-type Grin lens, a lambda/2 wave plate, a lens, a polarization beam splitter prism, a lambda/4 wave plate, an off-axis optical antenna, a stepper motor drive device, a polarizer, a first tail fiber-type coupling lends, a double-channel polarization state analyzer system, a second fiber beam splitter, a photodiode, a coaxial cable, and an oscilloscope. The system can monitor each polarization state situation of reference local oscillation laser signals and laser echo signals in the coherent wind lidar system in real time. when polarization state of two light beams are not matched, the double-channel polarization state analyzer system can automatically correct the polarization state of the laser until matching is realized, thereby greatly improving the heterodyne efficiency of the coherent wind lidar system and improvising detection sensitivity of the system.

The invention relates to a method for forming a salicide block layer. The method comprises the following steps of: providing a substrate, wherein an isolation structure is arranged in the substrate, a first gate structure and a second gate structure are arranged on the surfaces of the substrate on two sides of the isolation structure respectively, and a light doping source and drain injection region is formed in the substrate on the two sides of the first gate structure; depositing a silicon rich oxide (SRO) layer; performing ion implantation on the two sides of the first gate structure so as to form a heavy doping source and drain injection region; depositing a silane layer; coating photoresist, and photoetching to form a first window, wherein an area of the first gate structure is exposed from the first window; removing the silane layer from the first window by dry etching; removing the SRO layer from the first window by wet etching; and removing the photoresist. Due to the adoption of the salicide block layer with the SRO layer and the silane layer, the SRO has a higher extinction coefficient compared with silica, and damage of plasma ultraviolet light to the substrate can be reduced; and therefore, the uniformity of threshold voltage is improved.

The invention relates to a method for preparing a porphyra yezoensis R-phycoerythrin fluorescence probe, which is characterized in that the method carries out the following steps at the temperature of 20 DEG C: firstly, deriving R-phycoerythrin in a mole ratio of 40 to 1 of 3 - (2 - pyridine 2-mercapto) propionic acid n-hydroxysuccinimide ester and R-phycoerythrin, 2 hours shaker dark slow-speed oscillating for 2 hours, and using Sephadex G-25 desalting columns to collect the derived R-phycoerythrin; then carrying out the sulfhydrylation of an antibody in a mole ratio of 500 to 1 of dithiothreitol and the antibody, shaker slow-speed oscillating for 1 hour, and using the Sephadex G-25 desalting columns to collect the sulfhydrylation antibody; finally, taking the derived R-phycoerythrin according to the ratio of the mass ratio of 3 to 5 of the R-phycoerythrin before derivation and the antibody to mix with the sulfhydrylation antibody, shaker slow-speed oscillating for 12 hours, adding 100muml N-ethyl maleimide for reacting for 30 minutes, separating and purifying by a Sephacryl S-300HR chromatographic column, and using an eluant of 50mmol / L phosphate buffer and 150 mmol / L sodium chloride with a pH value of 7.0 to collect a separated cross-linked product, namely a porphyra yezoensis R-phycoerythrin fluorescence probe.

A method of manufacturing a solid state imaging device having a photo-electric conversion portion array and a transfer electrode array, these arrays being provided in parallel to each other, upper surfaces and side wall surfaces of the transfer electrode array being covered with a light-shielding layer, and a transparent layer showing an oxidizing property at the time of film formation, the transparent layer being formed on the photo-electric conversion parts and the light-shielding layer.

Water-soluble, conjugated polymers containing one or more dibenzosilole monomer residues, as well as compositions, kits, and methods of making and using such polymers are disclosed. Also disclosed are dibenzosilole derivatives substituted with one or more water-solubilizing groups, and methods of making and using such derivatives to prepare water-soluble dibenzosilole polymers.

A complex containing a transition metal ion and a plurality of donor ligands each of which is fully coordinated to the transition metal ion and is either a nitrogen donor ligand or a cyclometalated donor ligand, such that at least one of the donor ligands is a cyclometalated donor ligand bears one or more reactive groups connected to at least one of the donor ligands through a linker that includes a chain of four or more atoms. The linker offers advantages that make the complex particularly effective in labeling biomolecules and in multiplex analyses.

The invention provides an application of a compound or an isomer, a pharmaceutically acceptable hydrate or salt thereof in preparation of an imaging preparation or a photothermal therapy preparation.The compound prepared in the invention has a high extinction coefficient, a high fluorescence quantum yield and high effective NIR-II brightness, for example, the prepared L1057NPs can effectively convert absorbed light energy into heat energy, the photothermal conversion efficiency reaches 38%, and tumor cells can be effectively killed; the L1057NPs can realize ultrafast high-resolution NIR-II fluorescence imaging, and can be used for diagnosis of tumors, blood vessels and other related diseases.

The invention relates to a medium-low temperature solar spectrum selective absorption coating and a preparation method thereof, in particular to a solar spectrum selective absorption coating which haslow emissivity and a high ratio of the solar spectral absorption rate alpha to the infrared radiation rate epsilon (T) and is based on metal and metal nitride absorption, and a preparation method thereof. The medium-low temperature solar spectrum selective absorption coating sequentially comprises a base layer, an infrared reflection layer, an absorption layer, a transition layer and an antireflection layer; and the absorption layer comprises a first absorption sublayer and a second absorption sublayer. The medium-low temperature solar spectrum selective absorption coating and the preparationmethod thereof at least have the following characteristics that the coating has low infrared radiation rate, the overall absorption rate of the coating is increased, materials of the coating has theabsorption effect in the solar spectral energy range, and reflection of sunlight on the surface of the absorption layer is effectively reduced; reflection of light at an interface in the coating is effectively reduced; and the overall preparation efficiency of the coating is effectively improved, and the production capacity is improved.

The invention discloses an antireflection cover plate and a preparation method thereof. The method comprises the following steps: S1, providing a substrate; and S2, preparing an antireflection layer on the substrate, wherein the antireflection layer comprises a plurality of high-refractive-index metal oxide layers and a plurality of low-refractive-index metal oxide layers which are alternately stacked. The preparation method of the high-refractive-index metal oxide layers and the low-refractive-index metal oxide layers comprises the following steps: (1) preparing a metal thin film by adoptingmagnetron sputtering; and (2) conducting inductively coupled plasma ionization on the metal thin film in an oxygen environment to form the metal oxide layers, wherein the ICP power is 1-4000 W and theoxygen flow is 50-500 sccm. The core of the method is characterized in that the metal thin film is prepared firstly, then an ion source is used for ionization to form the metal oxide layers, meanwhile, by controlling the ICP power and the oxygen flow, the extinction coefficient of the metal oxide layers is increased, the transmittance of the cover plate is reduced while the reflection effect is achieved, the shielding effect is achieved on the appearance defects of the cover plate, and the yield is improved.

The invention discloses a gold nanometer podophyllotoxin liposome, a preparation method and use thereof. The gold nanometer podophyllotoxin liposome is a nano-composite obtained by causing a gold nanorod to be modified by a polyelectrolyte and then combined with the outer surface of the podophyllotoxin liposome containing carboxyl. The gold nanometer podophyllotoxin liposome is in a typical vesicle shape with a particle diameter of about 129.8 nm and a zeta potential of +15.7 mV, and has a high extinction coefficient (8.08Lg<-1>cm<-1>) and photothermal conversion efficiency (46.1%); and the gold nanometer podophyllotoxin liposome has no cytotoxicity and no hemolysis. The gold nanometer podophyllotoxin liposome has good photothermal stability under near-infrared irradiation and can achieverapid release; and the synergistic treatment of chemotherapy-photothermal therapy has a strong killing effect on tumor cells, and an effect thereof may not be limited to this.

The invention discloses an efficient ternary organic solar cell based on porphyrin materials. The cell sequentially comprises a substrate, an anode, an anode interface modification layer, an active layer, a cathode interface modification layer and a metal electrode from bottom to top. The active layer comprises a blend membrane which is obtained by mixing an electron donor material ZnPor-2DPP, anelectron acceptor material IDIC and PC61BM. The mixed membrane based on the porphyrin donor material ZnPor-2DPP and the acceptor material IDIC has the advantages that the planarity is too strong; themolecular aggregation is severe, the phase separation size is larger and the photoelectric conversion efficiency of a binary system is limited. According to the preparation method, PC61BM is doped into a binary system of ZnPor-2DPP and IDIC, so that the morphology of the active layer of the obtained ternary system is improved, and the current and the filling factor are also improved, and finally,the organic solar cell with the photoelectric conversion efficiency of 7.46%-8.20% is obtained.

The invention aims to provide a method for measuring a response function of a time resolution fluorescence instrument in the yellow-green optical band. The method comprises the following steps: a, using quenched fluorescein sodium as a reference dye, using fluorescein sodium as a fluorescent dye, and using iodine ion (I<->) as a quenching agent; b, acquiring the time resolution fluorescence spectrum of the reference dye through a measurement instrument; and c, using the time resolution fluorescence spectrum as the response function of the measurement instrument. The final concentration of fluorescein sodium is 200-800 muM, the final concentration of iodide ion (I<->) is 8-12.2 M, and the pH value of the system is more than or equal to 9. Compared with the method of solid particle scattering measurement instrument response function, the method of the invention to obtain the instrument response function avoids color effect between the different excitation wavelengths, improves the result accuracy of the whole experiment, and avoids the trouble of replacing filter.

The present invention discloses a new method for synthesizing asymmetric cyanine dyestuff. Said method comprises reacting 1,1-dimethyl-2-formylmethene-3-alkyl-1H-benzo[e] indole as raw material with substituted 1-alkyl-2,3,3,-trimethyl indole salt. The asymmetric cyanine dyestuff synthesized by using said invented method is high in purity (up to above 99%) and high in yield (greater than 85%), and convenient for purification (using recrystallizing process), and its extinction coefficient is large (epsilon is greater than 10 to the powr 5 M.cm), and its solubility is good in organic solvent and alcohol. It is specially applicable of using as recording medium of DNA-R optic disk.