摘要:
An optical waveguide, which combines a thin film of aligned liquid-crystal sandwiched between two dielectric plates, is capable of performing many active optical processing functions such as modulation switching and beam deflection.
摘要:
This invention pertains to a process for preparing diacetylenics, to diacetylenic compounds and to reduced diacetylenic compounds. The process includes the steps of reacting coupling an acetylenic acid in presence of cupric chloride in Ethylamine and hydroxylamine hydrochloride to form a diacetylenic diacid; reacting the diacetylenic diacid with a lithium compound, trimethylsilyl chloride and hydrochloric acid to form a diacetylenic compound; and reducing the diacetylenic compound to a reduced diacetylenic compound. The diacetylenic compounds have the formula COOH—(CH2)m—C≡C—C≡C—(CH2)m—C(═O)—R or R—C(═O)—(CH2)m—C≡C—C≡C—(CH2)m—C(═O)—R and the reduced cyclic diacetylenic compounds have the formula COOH—(CH2)m—C≡C—C≡C—(CH2)m—CH2—R or R—CH2—(CH2)m—C≡C—C≡C—(CH2)m—CH2—R, where m is 1-18 and R is selected from alkyl groups of 1-10 and cyclic groups containing 6-35 carbon atoms and aryl moieties
摘要翻译:本发明涉及制备二乙炔基化合物,二乙炔化合物和还原二炔化合物的方法。 该方法包括使乙酸氯化物在乙胺和盐酸羟胺存在下偶联乙酸以形成二乙炔二酸的步骤; 使二乙炔二酸与锂化合物,三甲基甲硅烷基氯和盐酸反应,形成二乙炔化合物; 并将二乙炔化合物还原成还原的二乙炔化合物。 二乙炔化合物具有式COOH-(CH2)mC = CC = C-(CH2)mC(= O)-R或RC(= O) - (CH2)mC = CC = C-(CH2)mC(= O )-R并且还原的环状二炔化合物具有式COOH-(CH 2)m C = CC = C-(CH 2)m -CH 2 -R或R-CH 2 - (CH 2)m C = CC = C-(CH 2)m - CH2-R,其中m为1-18,R选自1-10的烷基和含有6-35个碳原子的环状基团和芳基部分
摘要:
A process for producing metal plated paths on a solid substrate of the kind which has polar functional groups at its surface utilizes a self-assembling monomolecular film that is chemically adsorbed on the substrate's surface. The solid substrate may, for example, be an insulator of the kind used for substrates in printed circuitry or may, as another example, be a semiconductor of the kind used in semiconductor microcircuitry. The chemical reactivity in regions of the ultra-thin film is altered to produce a desired pattern in the film. A catalytic precursor which adheres only to those regions of the film having enough reactivity to bind the catalyst is applied to the film's surface. The catalyst coated structure is then immersed in an electrolers plating bath where metal plates onto the regions activated by the catalyst.
摘要:
Diacetylinic phosophocholines have distinctly different endothermic and exothermic transition temperatures. Lipid tubules are formed by hydrating a diacetylinic phosphocholine at a temperature above its endothermic transition temperature. The hydrated lipid is then cooled slowly to a formation temperature 1.degree. to 10.degree. C. below the exothermic transition temperature to form tubule structures. The tubules structures can be polymerized to form permanent tubules. The tubules can be used in the same manner as a liposome vesicle or they can be metal coated for a variety of applications.
摘要:
Tubular, spheroidal, and helical lipid microstructures are individually clad with a metal coat deposited on the microstructures by an electroless plating bath. In metal cladding the microstructures, the surfaces of the lipid microstructures are sensitized by adsorption thereon of a catalytic precursor which enables metal from the electroless plating bath to deposit upon and adhere to the sensitized surface. The metal plate is electrically conductive and may also be magnetic. A composite material is produced by embedding the metal clad microstructures in a matrix of a polymer such as an epoxy or a polyurethane.
摘要:
The present invention provides microwave attenuating, filled composite materials which contain a polymer or ceramic matrix and metallic tubules and processes for making the same and devices which contain such materials.
摘要:
The present invention provides novel polymerizable lipids and mixtures thof with non-polymerizable lipids and methods for the controlled release of encapsulated materials using stabilized or polymerized vesicles. Release is induced by pH, ions, temperature, light or other changes in the environment. Time release mechanisms are also employed. Applications of the present invention especially include encapsulation of enzymes and their subsequent sustained release for degradation of environmental pollutants, encapsulation of fluorescent markers for use in sensor systems, and encapsulation and release of fragrant molecules in detergents.
摘要:
A process for producing metal plated paths on a solid substrate of the kind which has polar functional groups at its surface, utilizing a self-assembling film that is chemically absorbed on the substrate's surface. The solid substrate may, for example, be an insulator of the kind used for substrates in printed circuitry or may, as another example, be a semiconductor of the kind used in semiconductor microcircuitry. The chemical reactivity in regions of the ultra-thin film is altered to produce a desired pattern in the film. A catalytic precursor which adheres only to those regions of the film having enough reactivity to bind the catalyst is applied to the film's surface. The catalyst coated structure is then immersed in an electroless plating bath where metal plates onto the regions activated by the catalyst.