115 results about "Optically active" patented technology

The invention relates to an optical system, in particular for microlithography, comprising at least one optical element (100, 200, 300, 400) which has a substrate (105, 205, 305, 405) and at least one optically active layer system (110, 210, 310, 311, 410) located on this substrate (105, 205, 305, 405), and at least one monitoring unit (120, 220, 240, 320, 340) for monitoring a degradation state of this layer system (110, 210, 310, 311, 410), wherein the monitoring unit (120, 220, 240, 320, 340) has a detector (121, 221, 241, 321, 341) for detecting non-directional radiation (130, 230, 330, 430) which is emitted by the optical element (100, 200, 300, 400) during the operation of the optical system.

This invention relates to organometallic compounds, compositions comprising the organometallic compound, lithography methods using the organometallic compound, an optical element, optically active device or optical or semiconductor device obtainable by the lithography methods, hard masks obtainable by the lithography method, uses of the compounds or compositions, a method for the preparation of the compound.

This disclosure provides an optically active nanocomposite material having a textured substrate and a multilayer optical stack comprising multiple nanosheets. The nanosheets may be chiral and composed of materials such as transition metal chalcogenides, MXenes, or nanocarbon. The optically active nanocomposite material exhibits linear birefringence (LB) and linear dichroism (LD), and optionally circular dichroism (CD). The nanocomposite material also exhibits optical asymmetry. g The factor may be greater than or equal to 1. Furthermore, the nanocomposite material exhibits thermal stability, for example, remaining stable at temperatures above or equal to about 250 °C. This disclosure also provides different methods for preparing such nanocomposite materials using a layer-by-layer self-assembly (LBL) process.

This invention provides novel stem cell activators, topical skin agents containing the aforementioned stem cell activators, and skin cosmetics containing the aforementioned stem cell activators. The stem cell activator of this invention comprises at least one compound selected from compounds (including optically active agents) shown in formula (1), salts of the aforementioned compounds, and hydrates thereof as active ingredients. In the following formula, R... 1 R 2 Represents a hydrogen atom or a hydrocarbon group. R 3 Represents a hydrogen atom or an organic group. n represents an integer greater than or equal to 1. The above hydrocarbon groups may have substituents. [Chemical Formula 1]

The present application relates to a kind of catalyst composition and its application in catalytic preparation optically active secondary alcohol, the catalyst composition includes chiral ionic bridged aryloxyalkane rare earth complex and additive, the additive is selected from one or more of pyrimidine, N,N-dicyclohexylmethylamine, 4,4'-dipyridyl.The above-mentioned catalyst composition can be used for synergistically catalyzing asymmetric borohydration of chalcone and its derivatives with pinacol borane, and show high catalytic activity and high enantioselectivity, product yield is as high as 99%, ee value can reach 84%, provide a reliable new way for the efficient, high selective synthesis of optically active secondary alcohol.

A device, method, and hybrid computing architecture for a Symbolic Photonic Logic Gate (SPLG) system that performs data processing primarily in the optical domain. The system comprises a photonic substrate, including silicon-photonics, indium phosphide, or similar optically active materials, patterned with optical waveguides and interferometric structures configured to implement logic operations through controlled optical interference, phase modulation, or non-linear optical effects. The SPLG system is configured to execute Boolean and symbolic logic functions without requiring intermediate optical-to-electrical signal conversion. In operation, information is encoded into one or more optical parameters including phase, polarization, wavelength, or amplitude, and processed within a Symbolic Optical Core optimized for linear algebraic operations such as matrix multiplication and vector transformation. The architecture further comprises an electronic control layer configured to initialize, configure, and monitor the photonic logic elements while allowing the majority of computational operations to occur within the optical domain, thereby reducing electrical interconnect congestion and resistive heating relative to fully electronic processors.

To provide a method for obtaining an optically active hydrogen-phosphine borane compound at high optical purity. Also, to provide a method for obtaining an optically active 2,3-bis(dialkylphosphino)pyrazine derivative at high optical purity. Provided is a method for producing an optically active hydrogen-phosphine borane compound comprising carrying out a decomposition reaction of an optically active phosphine borane compound in the presence of a phase-transfer catalyst using an alkaline aqueous solution and an organic solvent. Also provided is a method for producing an optically active 2,3-bis(dialkylphosphino)pyrazine derivative using the optically active hydrogen-phosphine borane compound obtained.

To provide a chromophore useful for being included in a film having electro-optical activity and an electro-optical device.SOLUTION: There is provided a compound represented by formula (A).SELECTED DRAWING: Figure 6A

The present invention relates to the fields of biopharmaceuticals and biochemical engineering, and particularly relates to a method for preparing chiral β-trifluoromethyl alcohol compounds using non-heme iron enzyme BsQueD or its mutants. Using non-heme iron enzyme BsQueD or its mutants as catalysts, trifluoromethyl ketone as a substrate, and phenylsilane as a hydrogen source, chiral β-trifluoromethyl alcohol is obtained after the reaction. The amino acid sequence of the non-heme iron enzyme BsQueD is shown in SEQ ID NO.1. It has a high conversion rate (70%) for the substrate trifluoromethyl ketone, high optical activity of the product β-trifluoromethyl alcohol (e.e. value greater than 90%), and high yield, greatly reducing the production cost.

The application designs a method for preparing optically active methyl fluoropropionate by using diethylamine sulfur trifluoride, comprising the following steps: fluorination reaction: under the protection of nitrogen, methyl S-lactate is added to a dry reaction kettle as raw material, the kettle temperature is cooled to a first reaction temperature, diethylamine sulfur trifluoride is added dropwise into the reaction kettle, after dropping, the reaction kettle is heated to a second reaction temperature, after the reaction is completed, the reaction mixture is added dropwise into saturated sodium / potassium bicarbonate aqueous solution to obtain R-2-fluoropropionic acid methyl ester; the molar ratio of diethylamine sulfur trifluoride to methyl S-lactate is 1-1.5:1, the method is high in efficiency, low in three-waste amount, short in reaction path, suitable for industrial production, and has economic value.

The invention discloses an ionic elastomer photoelectric sensor based on triplet-triplet annihilation up-conversion and a preparation method of the ionic elastomer photoelectric sensor, and belongs to the technical field of functional materials and photoelectric sensing. The photosensitizer and the luminescence agent form a triplet state-triplet state annihilation up-conversion system. The preparation method comprises the following steps: respectively forming the ionic conductive phase and the optical active phase, mixing the ionic conductive phase and the optical active phase to form a homogeneous system, and curing and molding through photo-initiation polymerization. Under the optical excitation condition of a specific wave band, the ion elastomer can generate measurable electric signal output, so that conversion from an optical signal to an electric signal is realized. The flexible photoelectric sensor can be prepared by curing the material on the surface of an electrode, can work under the condition of no external bias voltage or low bias voltage, has the characteristics of good wavelength selectivity, excellent flexibility and stretchability and the like, and has an application prospect in the fields of wearable sensing and flexible electronics.

The invention discloses a highly-doped crosstalk-free optical temperature sensing material based on potassium-based rare earth fluoride, the sensing material is potassium-based rare earth fluoride microparticles with surfaces modified by carbon dots and highly doped with optically active rare earth ions, the general formula of the potassium-based rare earth fluoride is KMF4, and M is an optically inert rare earth element selected from Gd or La; the optical active rare earth ions are selected from Eu < 3 + > or Tb < 3 + >, and account for 1-20 mol% of the total metal ions of the rare earth elements; the average particle size D50 of the sensing material is 5.0 [mu] m to 20.0 [mu] m. The problem of valence mismatch between rare earth ions and a matrix is solved by adopting the KMF4 matrix, high-concentration doping is allowed without quenching, and rare earth characteristic luminescence is remarkably enhanced. Meanwhile, spatial isolation of the surface carbon dots and bulk phase rare earth ions is achieved through the micron particle structure, energy transfer between the surface carbon dots and the bulk phase rare earth ions is thoroughly eliminated, and complete independence of dual-mode light emission is ensured.

According to one exemplary aspect of the present application, there is provided a dielectric polymer film comprising a gap fill material forming composition; also provided are uses of the dielectric polymer films in semiconductor devices, optical elements, and optically active devices. The present application also relates to a method of producing the gap filler material forming composition, and a dielectric polymer film comprising the composition.

The application relates to a non-optically active water quality physicochemical parameter remote sensing estimation method, satellite remote sensing data is periodically inquired, retrieved and downloaded through a satellite remote sensing data service interface; a multi-dimensional feature set is constructed based on sampling time information, spatial position information and multi-band spectral information of the satellite remote sensing data; the multi-dimensional feature set is used as model input, a machine learning model is trained in combination with measured values of non-optically active water quality physicochemical parameters, and remote sensing estimation models of multiple non-optically active water quality physicochemical parameters are established; new measured values of water quality physicochemical parameters are acquired, when the new measured values meet a model updating trigger condition, controlled hot start updating is performed with parameters of a current remote sensing estimation model as initial parameters, and the current remote sensing estimation model is corrected. The method can realize full-link remote sensing monitoring from automatic data acquisition, multi-dimensional feature collaborative modeling to model self-optimization, and high-precision water quality physicochemical parameter remote sensing dynamic monitoring management is realized.

The present invention provides a method for synthesis of a novel covalent organic framework material having a 12-crown-4-ether group based on chiral separation. The novel covalent organic framework material having a 12-crown-4-ether group is prepared in the present invention, and CCOF-HTOD-1 can be used as a fluorescent probe for achieving chiral separation of different chiral drugs (L-PGL, D-PGL, L-PAL, D-TPL, L-TPL and D-TPL). The CCOF-HTOD-1 prepared in the present invention not only has advantages such as a simple preparation method, suitability for large-scale production, a uniform structure for the prepared novel 12-crown-4-ether covalent organic framework material, ease of dispersion, and excellent CD optical activity, but also exhibits excellent performance in detection of various chiral drugs, including high detection efficiency, high selectivity, and recycling. As a result, common problems in chiral drugs, such as difficult separation and low detection efficiency, can be solved thereby.

The invention belongs to the technical field of luminescent materials, and discloses an aluminum-based phosphate structure near-infrared luminescent material and a preparation method and application thereof, the chemical formula of the near-infrared luminescent material is MAl1-xCrxSbP3O12, M is selected from Na or / and Li; 0.02 < = x < = 0.12. The near-infrared light-emitting material is obtained by dissolving optically active Cr < 3 + > in a crystal phase of an MAl1-xCrxSbP3O12 compound with a monoclinic crystal structure and independently doping, the wavelength of an excitation spectrum of the near-infrared light-emitting material is 400-550 nm and 600-800 nm wave bands, the wavelength of an emission spectrum of the near-infrared light-emitting material is 700-1200 nm, and the near-infrared light-emitting material has adjustable full width at half maximum, can meet a wide spectrum, and is suitable for commercial blue light LED chips, such as LED chips, LED chips, LED chips, LED chips and the like. The material is applied to near-infrared fluorescent powder conversion light-emitting diode devices.

The present invention relates to a process for the preparation of optically active 4-substituted 1, 2, 3, 4-tetrahydroquinoline, said process comprising the enantioselective hydrogenation of the corresponding 4-substituted 1, 2-dihydroquinoline in the presence of a chiral iridium (P, S)-ligand catalyst.

A method for manufacturing a lens system, comprising the steps of: providing an injection molding apparatus (1), providing a first lens (3), introducing and fixing the first lens (3) in the injection molding apparatus, closing the injection molding apparatus, introducing injection molding material into the injection molding apparatus for forming a second lens on the optically active surface of the first lens, providing a UV light source, and curing the second lens by UV light radiation from the UV light source, wherein the UV light is radiated onto the second lens (6) through a UV light-transmittable area of ​​a second half-mold (1b) so as to cure the second lens.

The present invention provides industrially suitable processes for preparing intermediates in the production of substituted polycyclic pyridone derivatives having a cap-dependent endonuclease inhibitory activity. In the process as shown below, wherein each symbol is as defined in the specification, an optically active substituted tricyclic pyridone derivative of the formula (VII) is obtained in high yield and high enantioselectivity by subjecting a compound of the formula (III) or (VI) to intramolecular cyclization with controlling stereochemistry to obtain a compound of the formula (IV) having a removable functional group on an asymmetric carbon, and then removing the functional group thereof;

This invention relates to suitable uses, dosages and applications of optically active azabicyclic derivatives or pharmaceutically acceptable salts thereof that can be used as pharmaceuticals, and pharmaceutical compositions comprising the thereof.

This application relates to the field of liquid crystal display technology, specifically to a reflective liquid crystal display panel and its preparation method, and a reflective liquid crystal display device. The reflective liquid crystal display panel includes a first substrate, a liquid crystal layer, and a second substrate stacked sequentially. The raw material components of the cholesteric liquid crystal composition include nematic liquid crystal, a hydrophobic first chiral compound, and a hydrophilic second chiral compound, with opposite optical rotations between the first and second chiral compounds. A hydrophilic interface is formed on the side of one of the first and second substrates facing the liquid crystal layer. This overcomes the limitation that the theoretical reflectivity of a single optically active cholesteric liquid crystal does not exceed 50%, improving overall reflectivity and display brightness. Because the components with different optical rotations are vertically layered within the same continuous liquid crystal phase, rather than forming an independent double-layer structure through external bonding, there are no obvious independent mechanical interfaces between the layers, reducing light scattering loss and improving optical coupling efficiency.

The invention relates to an acetyl coenzyme A probe as well as a preparation method and application thereof. Specifically, the acetyl coenzyme A optical probe comprises acetyl coenzyme A sensitive polypeptide and optical active polypeptide, and the optical active polypeptide is located in the sequence of the acetyl coenzyme A sensitive polypeptide.

The invention relates to a solid optical body (10) made of a solid transparent material for use in a light module (12) of a motor vehicle lighting device (14). The solid optical body (10) comprises a light coupling section (16) through which light from a light source (18) of the motor vehicle lighting device (14) can be coupled into the solid optical body (10), and a light coupling section (22) through which at least a part of the light coupled into the solid optical body (10) is coupled out of the solid optical body (10), so that the coupled-out light serves to generate at least a part of a light distribution of the motor vehicle lighting device (14) in front of the motor vehicle.The optical body (10) further comprises an optically active layer (24) arranged in the beam path between the input coupling section (16) and the output coupling section (22), which is configured to modify incident light, wherein the optically active layer (24) comprises at least one film (24a) and is arranged inside the optical body (10). It is proposed that the at least one film (24a) has a three-dimensional shape, configuration and / or structure and is overmolded with the transparent material of the optical body (10) on at least one of its surfaces.

A process for preparing 1,1,3-trimethylindan-4-amine of formula (I), or a salt thereof, enriched in one of its two enantiomers, in particular the (R) enantiomer,including chirally separating an optionally substituted 2,2,4-trimethyl-1,2,3,4-tetrahydroquinoline of formula (III)A process may prepare one or more optically active amides of formula (II)starting from compounds of formula (I).

The invention discloses a chiral alpha-alkenyl substituted carboxylic ester compound and an asymmetric preparation method thereof, and the chiral alpha-alkenyl substituted carboxylic ester compound is an optically active compound with a structure as shown in the following formula I, and comprises a stereoisomer with the same chemical general formula, in the formula, * represents a chiral carbon atom; ar is an aromatic ring or a substituted aromatic ring; r1, R2, R3, R4 and R5 are respectively and independently selected from hydrogen, halogen, alkyl or alkoxy of C1-10, aryl and trifluoromethyl; r6 is independently selected from H, C1-10 alkyl or alkoxy, aryl or substituted aryl, and a substituent group of the substituted aryl is selected from halogen and C1-10 alkyl. According to the invention, the chiral alpha-alkenyl substituted carboxylic ester compound is accurately and rapidly synthesized with high yield, high stereoselectivity and gram-level scale. The preparation method is simple, and has biomedical practicability and industrial application prospects.

Methods for fabricating optically active quantum memories into quantum-grade diamond thin films and then bonding them to semiconductor substrates are described. Semiconductor substrates are optically and electronically functionalized in preparation for using a flip-chip bonding technique to bond the functionalized substrates to overgrown diamond thin films that host color centers. By purposefully growing quantum-grade diamond thin films and implanting them with color centers separately from fabrication processes that functionalize the substrates, the high quality, purity, and crystallinity of the thin films are preserved, while also allowing for further customization of the types of color centers that are implanted into the diamond.

A dye-exchanged zeolite marker wherein the zeolite is characterized by a pores size comprised between 4 Å and 12 Å and the dye is an organic cationic molecule, characterized by an amount of dye comprised between 0.05% wt and 1% wt with respect to the zeolite weight, optically active compositions comprising the same dispersed in a polymeric matrix and their use as a detectable marker.

The invention relates to a photovoltaic module (4) having a colored decorative film (2) which covers the optically active upper face of the photovoltaic module, wherein the decorative film is formed by a plastic film containing one or more coloring agents, preferably pigments, and the decorative film has an average transmittance of at least 50% in the wavelength range of 750-1150 nm.

Methods for transferring optically active features, such as meta-atoms and diffractive elements, formed on a planar surface to a non-planar surface with high precision are described. Optical devices having meta-atoms or other diffractive features located on non-planar and / or planar surfaces can be fabricated using the described methods. Related optical systems and components are described.

Semiconductor structure (2) for measuring a breakdown voltage of a pn junction, wherein the semiconductor structure (2) comprises: a substrate (4); a sensor element (6) in the substrate (4) comprising an optically active region (8) which includes the pn junction, wherein the sensor element (6) is configured to apply a blocking bias to the pn junction; and an emitter (10) adjacent to the optically active region (8) in the substrate (4), wherein the emitter (10) is separated from the optically active region (8) by a trench insulation (12), and wherein the emitter (10) is configured to provide charge carriers to the optically active region (8) to trigger the breakdown of the pn junction when the blocking bias is equal to or greater than the breakdown voltage.