Abstract:
Inorganic substrates with a hydrophobic surface layer of a fluorinated material having the following structure are disclosed: where A is an oxygen radical or a chemical bond; n is 1 to 20; Y is H, F, CnH2n+1 or CnF2n+1; X is H or F; b is at least 1, m is 0 to 50, and p is 1 to 20. The fluorinated material can be directly adhered to the inorganic substrate or can be indirectly adhered to the inorganic substrate through an intermediate organometallic coating.
Abstract:
A composite includes a substrate, a binder layer disposed on a surface of the substrate; and a nanofiller layer comprising nanographene and disposed on a surface of the binder layer opposite the substrate. In addition, a nano-coating layer for coating a substrate includes multiple alternating layers of the binder layer and the nanofiller layer. Articles coated with the nano-coating layer prepared from alternating layers of nanofiller layer and binder layer have improved barrier properties, and may be used in down-hole applications.
Abstract:
Methods for removing hydrogen from molecules are disclosed. In one embodiment, hydrogen-containing molecules are deposited on a solid substrate and are bombarded with hydrogen projectile particles. The particles may have energies of 5-100 eV, or more preferably 10-50 eV. The hydrogen projectile particles remove hydrogen atoms from the deposited molecules while they are on the substrate, without removing other atoms from the molecules. Dangling bonds are created by the loss of hydrogen and can be used to cross-link the molecules. The resulting product can be a nanometer-thick dense film.
Abstract:
Inorganic substrates with a hydrophobic surface layer of a fluorinated material having the following structure are disclosed: where A is an oxygen radical or a chemical bond; n is 1 to 20; Y is H, F, CnH2n+1 or CnF2n+1; X is H or F; b is at least 1, m is 0 to 50, and p is 1 to 20. The fluorinated material can be directly adhered to the inorganic substrate or can be indirectly adhered to the inorganic substrate through an intermediate organometallic coating.
Abstract:
A metal nanoparticle which is prepared by forming a self-assembled monolayer including a terminal reactive group on the surface thereof, and introducing a functional group capable of being removed by the action of an acid or an base into the terminal reactive group wherein the self-assembled monolayer is built up of a thiol, an isocyanide, an amine, a carboxylate or a phosphate compound having the terminal reactive group, or built up of a thiol, an isocyanide, an amine, a carboxylate or a phosphate compound having no terminal reactive group followed by introducing the terminal reactive group thereto; and a method for forming a conductive pattern using the same are provided. Since the metal nanoparticle of exemplary embodiments of the present invention can easily form a high conductive film or a high conductive pattern through photo-irradiation and photo-degradation and randomly regulate its conductivity when occasions demand, it can be advantageously applied to an antistatic washable sticky film, antistatic shoes, a conductive polyurethane printer roller, an electromagnetic interference shielding, and the like.
Abstract:
Methods of attaching a ligand to a surface are described that include contacting a surface with a substrate containing an amphiphilic comb polymer. The substrate is configured to provide a pattern of the amphiphilic comb polymer on a selected region of the surface. The substrate can be separated from the surface leaving the amphiphilic comb polymer on the selected region of the surface, thus providing a selected region of the surface having amphiphilic comb polymer on it. A ligand can then be deposited on the surface such that the selected region of the surface having the amphiphilic comb polymer is substantially free of the ligand.
Abstract:
The invention provides a lithographic method referred to as “dip pen” nanolithography (DPN). DPN utilizes a scanning probe microscope (SPM) tip (e.g., an atomic force microscope (AFM) tip) as a “pen,” a solid-state substrate (e.g., gold) as “paper,” and molecules with a chemical affinity for the solid-state substrate as “ink.” Capillary transport of molecules from the SPM tip to the solid substrate is used in DPN to directly write patterns consisting of a relatively small collection of molecules in submicrometer dimensions, making DPN useful in the fabrication of a variety of microscale and nanoscale devices. The invention also provides substrates patterned by DPN, including submicrometer combinatorial arrays, and kits, devices and software for performing DPN. The invention further provides a method of performing AFM imaging in air. The method comprises coating an AFM tip with a hydrophobic compound, the hydrophobic compound being selected so that AFM imaging performed using the coated AFM tip is improved compared to AFM imaging performed using an uncoated AFM tip. Finally, the invention provides AFM tips coated with the hydrophobic compounds.
Abstract:
A method for producing an organic thin film, which enables rapid film formation, and enables a dense organic thin film with minimal impurities to be formed stably, and in a plurality of consecutive repetitions. Also, a method for producing an organic thin film in which an organic thin film is formed on the surface of a substrate, including bringing the substrate into contact with an organic solvent solution containing a metal-based surfactant having at least one hydrolysable group, and a catalyst capable of interacting with the metal-based surfactant, wherein the water contact within the organic solvent solution is either set or maintained within a predetermined range.
Abstract:
The present invention is directed to a coating composition for rendering a glass surface water repellent. This invention is particularly directed to a coating composition with good durability. The coating composition can comprise one or more perfluoroalkyltrichlorosilanes, a perfluoropolyether carboxylic acid, and at least one fluorinated solvent.
Abstract:
An article is provided for immobilizing functional organic biomolecules (e.g. proteins, DNA, and the like) through a covalent bond to a thiolate or disulfide monolayer to a metal surface wherein an extra activation step of the surface layer or an activation step of the functional biomolecules or bioreceptors could be avoided. The monolayer can contain, but is not limited to, two moieties. One has a group that resists nonspecific adsorption and another has a group that directly (without activation) reacts with functional groups on the biomolecules. In addition, poly(ethylene oxide) groups are incorporated in the monolayer surfaces to resist the nonspecific adsorption and to enhance the specific affinity interactions. A sensor device including these monolayers is also provided to perform reproducible, sensitive, specific and stable bioanalysis.