64 results about "Molecular configuration" patented technology

A bistable nematic liquid crystal device includes an array of holes (8) in an alignment layer (6) on at least one cell wall (2). The alignment layer (6) induces a substantially planar local alignment of liquid crystal molecules. The holes (8) have a shape and / or orientation to induce the liquid crystal director adjacent the holes (8) to adopt two different tilt angles in substantially the same azimuthal direction. The arrangement is such that two stable liquid crystal molecular configurations can exist after suitable electrical signals have been applied to the electrodes.

The invention discloses a fluorescent color changing eutectic material under ultra-high pressure conditions and a preparation method thereof, and belongs to the field of molecular solid-state light-emitting materials. A plurality of multi-fluoro-substituted organic small molecules are selected as co-assembly units, and a novel multi-component molecular co-crystal compound is prepared by using a solvent-assisted grinding method, a solvent evaporation method, an ultrasonic synthesis method and the like. Cyano substituted p-phenylene vinyl type molecules and the co-assembled small molecules mutually recognize each other through multiple hydrogen bonds, Pi- Pi force and other non-covalent forces to form a structure-ordered supramolecular structure, changing self-stacking molecular configuration and spatial arrangement of original cyano-substituted phenylene vinyl type molecules so as to achieve a certain modulation effect on photophysical properties. The novel fluorescent color changing eutectic material prepared by the method can produce different fluorescent discoloration behaviors under the ultra-high pressure conditions, is the first fluorescent discoloration eutectic system underthe ultra-high pressure conditions, and has application prospects in the fields of new optical sensors and pressure sensitive materials and the like.

Computing units are determined for performing molecular docking calculations in parallel with the number of computing units and the width of the data paths allocated by relative complexity of operations. Data can be expected to arrive at downstream computing units as it is needed, leading to higher utilization of computing units. Computing units are hardware components that are specific to a calculation performed. For molecular docking calculations, functions of molecular subsets or of combinations of molecular subsets are calculated. Determinations include fit between molecular subsets, affinity or energy of “fit” between molecular subsets, etc. Affinity might include inter-atomic energy, bond energy, energy of atoms immersed in a field, etc. The calculations could be used to simulate and / or estimate likelihoods of molecular interactions.

The invention discloses a dendritic fluorescent chemical sensor, and its preparation method and application, and also discloses a method for identifying and detecting Pd <2+> through the dendritic fluorescent chemical sensor. The invention belongs to the field of organic synthesis and analytical chemistry. The dendritic fluorescent chemical sensor is characterized in that rhodamine B hydrazide as a fluorescent active site is introduced into a dendritic compound to form a novel compound, wherein a structural formula of the novel compound is shown in the patent specification. The preparation method of the dendritic fluorescent chemical sensor comprises the following steps of in an argon atmosphere, putting an aldehyde compound with a quadrilateral molecular configuration into a reactor, adding ethanol into the aldehyde compound to make the compound dissolve, adding dropwisely rhodamine B hydrazide-ethanol solution into the aldehyde compound-ethanol solution with stirring under a constant pressure, wherein a mol ratio of the added aldehyde compound to the added rhodamine B hydrazide is 1: (4.2 to 4.5), when a adding process of the rhodamine B hydrazide-ethanol solution is finished, adding 1.0 to 2.0% by volume of glacial acetic acid into the mixed solution in the reactor, stirring well, carrying out a reflux reaction at a temperature of 100 DEG C for 18 to 22 hours, evaporating the resulting products to remove a solvent and collect residue, washing the residue 3 to 5 times by ethanol, and drying in a vacuum to obtain a dendritic fluorescent chemical sensor product which is a pale pink solid. The dendritic fluorescent chemical sensor prepared by the preparation method has four fluorescent active groups thus a sensing speed and a sensing sensitivity of the dendritic fluorescent chemical sensor is 4 times as high as a sensing speed and a sensing sensitivity of a small molecule. The dendritic fluorescent chemical sensor does not contain toxic solvents.

The invention provides a production method of a photoelectric regulation metal nanoparticle and liquid crystal array structural box, and belongs to the technical field of photoelectricity. The production method provided by the invention is based on nano-structure polarization configuration, molecular configuration matching and an LSPR (Localized Surface Plasmon Resonance) principle of precious metal nanoparticles, utilizes a laser evanescent standing wave focused capturing deposition technology, and changes light intensity of laser evanescent standing waves so as to regulate the spatial form of a metal nano array and liquid crystal composite structure; when an optical field is utilized to regulate focused deposition, different voltages are loaded between upper and lower electrodes, and an electric field between the electrodes is changed to regulate the spatial structure of the metal nanoparticle and liquid crystal composite array structure so as to achieve different spectral responses and photoelectric regulation in a liquid crystal box. The metal nanoparticle and liquid crystal composite array structural box produced by the production method provided by the invention is helpful for providing a novel principle and a novel method for a novel surface plasmon photoelectric display technology.

The present invention relates to one kind of intramolecular Al3+ cross-linked polymer gel and its preparation process. The gel cross-linking reaction happens mainly between the branch chains inside the identical polymer molecule to form í‹localíŒ netted molecular configuration. The polymer gel has basically unchanged viscosity before and after the gel is formed, and can flow in porous medium with flow resistance obviously greater than that of polymer solution in the same viscosity and residual resistance coefficient greater than the resistance coefficient. The polymer gel features consists of partially hydrolyzed polyacrylamide 0.04-0.08 wt%, aluminum citrate 0.01-0.04 wt%, and NaCl or KCl mineralization degree regulator 0.05-1.0 wt% except oil field sewage. The polymer gel has excellent profile modifying characteristic.

A bistable liquid crystal device comprises first and second cell walls enclosing a layer of nematic liquid crystal material. Electrodes on at least one cell wall apply an electric field across at least some of the liquid crystal material. The inner surface of the cell wall includes a grating alignment structure having a polymeric material coating contacting the liquid crystal material and is substantially insoluble therein. Two stable molecular configurations can to exist in the nematic layer in response to suitable electrical signals applied to the electrodes.

The invention discloses a multifunctional rubber modifier for an all-steel radial tire. The molecule of the rubber modifier which is an in-situ grafted modified borate molecule of which the central atom is a boron element; and the molecular configuration is a three-arm telechelic structure and is in an amphiphilic nonionic configuration. The multifunctional rubber modifier has functions of internal and external lubrication and interfacial activation, can reduce the Mooney viscosity of mixed rubber, and improves the abrasive resistance, flexibility and ageing and fatigue resistance of vulcanized rubber. The multifunctional rubber modifier also can improve the cost performance of rubber products so as to reduce the product cost and improve the performance. The provided preparation method issimple in technology, can achieve higher efficiency and reduce the environmental pollution, is mild in reaction conditions, easy and convenient to operate, ensures that the products are easy to separate, and has large-scale application prospects.

The invention relates to a preparation method of L-lyxose and relates to a five-carbon sugar. The invention provides a preparation method of L-lyxose and the method has cheap and easily available raw materials, fewer reagents and simple process. The technical scheme of the preparation method uses L-arabinose as a raw material; L-arabinose is subjected to hydroxyl protection and is reduced into a sugar alcohol, then the molecular configuration is changed under Swern oxidation condition, and finally the product L-lyxose with mirror symmetry conversion is obtained. The method comprises the following steps: synthesizing 5-O-triphenylmethyl-L-arabinose (2); synthesizing 5-O-triphenylmethyl-L-arabitol (3); synthesizing 5-O-triphenylmethyl-1,2,3,4-tetraacetylarabitol (4); synthesizing L-arabitol-1,2,3,4-tetraacetate (5); synthesizing L-lyxose-2,3,4,5-tetraacetate (6); and synthesizing L-lyxose (7).

The invention relates to a new type of reusable water writing paper. The water writing paper is composed of a color-developing component and a matrix. The color component, when exposed to water, can undergo a change in molecular configuration or conformation to cause an obvious color change and develop color. After the water dries, the molecular structure will recover and the color will fade, and different colors can be displayed through the change of molecular substituents. It can be written like a handwriting Clear, not easy to spread, smooth surface, reusable, it is not only suitable for brush books, drawing exercises, but also for daily writing with pens, in addition, it can also use water spray to achieve ink-free printing, due to the special response to water, this type of Water writing paper can also be used in humidity detection cards, security and anti-counterfeiting and other fields.

Embodiments of the present invention provide, among other things, methods, apparatus, and systems for tuning a semiempirical process for predicting energy for different molecular configurations. In an example method, an energy value and an energy gradient are determined for each of a plurality of molecular configurations using an accurate method. A functional form of the semiempirical process is optimized using the determined energy values and energy gradients via multiobjective optimization. The functional form relates one or more parameters to energy values and energy gradients.

A bistable nematic liquid crystal device includes an array of upstanding features (10) on at least one cell wall (2). The features (10) have a shape and / or orientation to induce the liquid crystal director adjacent the features (10) to adopt two different tilt angles in substantially the same azimuthal direction. The arrangement is such that two stable liquid crystal molecular configurations can exist after suitable electrical signals have been applied to the electrodes (12, 14).