摘要:
At least one monomolecule film is formed on a transparent substrate surface directly or via a protective film. The monomolecule film is formed with chemical coupling of chlorosilane surface active compound, for example, of the formula: F(CF2)m(CH2)nSiRqX3−q where m is an integer of from 1 to 15, n is an integer of from 0 to 15 provided that the total of m and n is an integer of from 10 to 30 and R is an alkyl or an alkoxyl group, or F(CF2)m′(CH2)n′A(CH2)pSiRqX3−q where m represents an integer ranging from 1 to 8, n′ represents an integer ranging from 0 to 2, p represents an integer ranging from 5 to 25, q represents an integer ranging from 0 to 2, X represents a halogen atom or an alkoxyl group, R represents an alkyl or an alkoxyl group, and A represents O, a —COO— or —Si(CH3)2—. The transparent substrate such as glass is made hydrophobic and free of contamination.
摘要:
A highly dense chemically adsorbed film is formed by repeating the alternate process of adsorption reaction and washing. Adsorption reaction is directed by contacting the substrate surface, which has or is given an alkali metal or a functional group, with a chemical adsorbent, having halosilyl or alkoxysilyl groups at the end of molecules. An unreacted chemical adsorbent is then washed away from the substrate surface. The alternate treatment of adsorption reaction and washing is repeated, thereby covalently bonding a chemically adsorbed film to the substrate surface. As a result, a chemically adsorbed film is formed in which stem molecules are directly or indirectly covalently bonded to the substrate surface via at least one element chosen from the group consisting of Si, Ge, Sn, Ti, Zr, S or C and graft molecules are covalently bonded to at least one element chosen from Si, Ge, Sn, Ti, Zr, S or C via at least one bond chosen from —SiO—, —GeO—, SnO—, —TiO—, ZrO—, —SO2—, —SO— and —C—.
摘要:
A chemically adsorbed film comprising carbon-chain organic molecules is formed on a substrate surface via covalent bonds, and organic compounds comprising carbon chains are physically adsorbed to the surface of the chemically adsorbed film, thus providing a lubricating film which is thin and durable against friction, and with good anti-abrasion and sliding properties. The thickness of the lubricating film is at the nanometer level. More specifically, a lubricating film is made by forming a chemically adsorbed film on a substrate surface after dipping and holding the substrate in a nonaqueous solution dissolving chemical admolecules, and by coating a chloroform solution of a long-chain hydrocarbon-based fatty acid ester compound on the surface of the chemically adsorbed film.
摘要:
A latent image comprising a first substance formed on a substrate of a second substance having a surface tension different from a surface tension of the first substance, the first substance and the substrate having a difference of 0.1 to 100 nm in height from each other. The latent image is formed by a method comprising the-step of subjecting a substrate of a first substance to a chemical treatment or a physical treatment to form a surface of a second substance which has a surface tension different from a surface tension of the first substance and has a difference of 0.1 to 100 nm in height from the substrate on part of the substrate. The latent image is developed by a method comprising the steps of contacting a latent image comprising a first substance formed on a substrate of a second substance having a surface tension different from a surface tension of the first substance with a third substance different from the first substance and the second substance, and applying a developing ray to the latent image.
摘要:
A chemically adsorbed film having a surface layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional portion of a machine part such as a gear or a bearing or on the surface of a game ball. An excellently self-lubricating low frictional resistance machine part or game ball thus can be obtained. A frictional portion of a gear or the like, made of SiO.sub.2 or like ceramic material, is dipped and held in a solution containing a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 dissolved in a non-aqueous solvent. A hydrochloric acid removal reaction is brought about between SiCl groups of the material, which contains a fluorocarbon and a chlorosilane group, and hydroxyl groups numerously present on the SiO2 surface, thus forming bonds ofCF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si (O--).sub.3over the entire frictional portion surface. A fluorine-containing monomolecular film thus is formed, which is chemically bonded to the substrate and has a thickness of about 1.5 nm.
摘要:
A chemically adsorbed film having a surface layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional portion of a machine part such as a gear or a bearing or on the surface of a game ball. An excellently self-lubricating low frictional resistance machine part or game ball thus can be obtained. A frictional portion of a gear or the like, made of SiO.sub.2 or like ceramic material, is dipped and held in a solution containing a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 dissolved in a non-aqueous solvent. A hydrochloric acid removal reaction is brought about between SiCl groups of the material, which contains a fluorocarbon and a chlorosilane group, and hydroxyl groups numerously present on the SiO.sub.2 surface, thus forming bonds of CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si (O--).sub.3 over the entire frictional portion surface. A fluorine-containing monomolecular film thus is formed, which is chemically bonded to the substrate and has a thickness of about 1.5 nm.
摘要:
A chemically adsorbed film having a surface layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional portion of a machine part such as a gear or a bearing or on the surface of a game ball. An excellently self-lubricating low frictional resistance machine part or game ball thus can be obtained. A frictional portion of a gear or the like, made of SiO.sub.2 or like ceramic material, is dipped and held in a solution containing a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 dissolved in a non-aqueous solvent. A hydrochloric acid removal reaction is brought about between SiCl groups of the material, which contains a fluorocarbon and a chlorosilane group, and hydroxyl groups numerously present on the SiO2 surface, thus forming bonds of CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si(O--).sub.3 over the entire frictional portion surface. A fluorine-containing monomolecular film thus is formed, which is chemically bonded to the substrate and has a thickness of about 1.5 nm.
摘要:
A process for producing an organic device includes forming a first electrode and a second electrode on a substrate having an insulating film formed on a surface thereof, etching out the insulating film with the first electrode and the second electrode being used as masks, forming a monomolecular or built-up monomolecular film containing electrolytically polymerizable unsaturated groups directly or indirectly on the surface of the substrate by a chemical absorption method or the Langmuir-Blodgett method. The process further includes a procedure of spreading a surfactant containing the electrolytically polymerizable unsaturated groups on the surface of a water bath to form a monomolecular film, transferring at least one layer of the monomolecular film into the surface of the substrate, and chemically bonding molecules of the surfactant to form at least one layer of the monomolecular film of the surfactant containing electroconductive conjugated groups, applying a voltage between the first electrode and the second electrode to polymerize the electrolytically polymerizable unsaturated groups, and deriving a third electrode from the substrate such that the substrate acts as the third electrode.
摘要:
A medical member having active hydrogen groups such as hydroxyl, amino or imino groups at its surface, is dipped, either directly or after formation of an inner layer on its surface, into a solution. The solution is prepared by dissolving a surface active material, e.g., CF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 SiCl.sub.3 in a non-aqueous solvent. A dehydrochlorination reaction is brought about between active hydrogen groups at the surface of the member and SiCl groups of the surface active material, thus producing bonds ofCF.sub.3 (CF.sub.2).sub.7 (CH.sub.2).sub.2 Si(O--).sub.3over the entire surface. A fluorine-containing monomolecular film is formed, which is chemically (or covalently) bonded to the member surface and has a thickness at the nanometer level. Since the chemically adsorbed film is covalently bonded to the member or inner layer, it is chemically stable and difficult to separate. Medical members can be obtained when the invention is applied to an artificial tooth, a joint, a bone, a blood bag, a catheter, a blood transportation tool, a dialysis equipment part, an operation thread, a medical implant and an operation tool.
摘要:
According to the invention, the surface of a substrate possessing an active hydrogen group is contacted with a chemical adsorbent containing a radical generation precursor group or metal ion capturing group within a molecule--also possessing a reactive functional group such as halosilyl or alkoxy silyl at its end--to form a chemical adsorption film by removing the unreacted chemical adsorbent, radicals are then generated and magnetism is expressed on the chemical adsorption film.