Abstract:
A pigment-based ink comprises: a non-polar carrier fluid; and pigment particles suspended in the non-polar carrier fluid. The pigment particles are coated with a metal oxide that is modified with at least one silane coupling agent to introduce functional groups, steric stabilizers or both. A combination of an electronic display and an electronic ink is provided, as is a method for modifying the pigment particles.
Abstract:
A phthalocyanine dye with extended conjugation includes one or both of a phthalocyanine component and a naphthalocyanine component and at least one water soluble substituent on an aryl group of the phthalocyanine dye. The extended conjugation of the phthalocyanine dye includes at least one benzene moiety of the component being one of (a) joined to an aryl group either indirectly using an alkylene linkage or directly, (b) joined to a benzene moiety of another of the components to form an oligomer of the components, and (c) a combination of (a) and (b). The extended conjugation shifts absorption of the phthalocyanine dye to greater than 800 nm.
Abstract:
The present invention is drawn to a layered organic device, and a method of forming the same. The method includes steps of applying a first solvent-containing organic layer to a substrate and removing solvent from the first solvent-containing organic layer to form a first solidified organic layer. Additional steps include applying a second solvent-containing organic layer to the first solidified organic layer and removing solvent from the second solvent-containing organic layer to form a second solidified organic layer. The first solidified organic layer can be crosslinked, which suppresses negative impact to components in the first solidified organic layer when the solvent of the second solvent-containing organic layer is deposited on the first solidified organic layer.
Abstract:
The present invention is drawn to a method of generating functionalized latex particulates in a colloidal suspension. The method can comprise steps of protecting functional groups present on polymerizable monomers with photo labile groups to form protected monomers; polymerizing the protected monomers to form a protected polymer; and exposing the protected polymer to a wavelength of light that removes the photo labile groups from the functional groups, thereby forming the functionalized latex particulates. These latex particulates can be used in a wide variety of applications, including in ink-jet ink printing applications.
Abstract:
The present invention is drawn to compositions and methods of generating epoxide group-functionalized latex particulates in a liquid suspension, as well as compositions and methods of preparing ink-jet inks. Steps of the methods can include forming an emulsion including a continuous hydrophilic phase and a discontinuous hydrophobic phase, wherein the discontinuous hydrophobic phase includes a plurality of monomers. The plurality of monomers can comprise epoxide group-forming monomers and support-forming monomers. Other steps include copolymerizing the monomers to form precursor latex particulates dispersed within the hydrophilic phase, and reacting the precursor latex particulates with a base to form epoxide group-functionalized latex particulates. These latex particulates can be used in a wide variety of applications, including in ink-jet ink printing applications.
Abstract:
Modified dyes, inks containing modified dyes, and associates methods of manufacture are described. The modified dyes are made by adding a hydrocarbon chain to the unmodified dyes through a hydroxyl, amine, or phenolic functional group. The modification is accomplished using compounds containing reactive groups selected from acid chlorides or halogenated hydrocarbon chains. The modified dyes provide enhanced water fastness and increased dispersibility of the dyes and associated inks.
Abstract:
The present invention is drawn to compositions and methods of generating active ester functionalized latex particulates in a liquid suspension, as well as compositions and methods of preparing ink-jet inks. Steps of the methods can include synthesizing polymerizable monomers with active ester groups and polymerizing these monomers with other monomers to form functionalized latex particulates having active ester group. These latex particulates can be used in a wide variety of applications, including in ink-jet ink printing applications.
Abstract:
An electronically addressable display comprises a substrate, at least one polarization-type, electrical field switchable molecular colorant associated with the substrate, and an addressing device mounted for selectively switching the at least one molecular colorant between at least two visually distinguishable states. Electronic devices including the electronically addressable displays and methods of manufacturing the electronically addressable display are also disclosed.
Abstract:
Bistable molecules are provided with at least one photosensitive functional group. As thus constituted, the bistable molecules are photopatternable, thereby allowing fabrication of micrometer-scale and nanometer-scale circuits in discrete areas without relying on a top conductor as a mask. The bistable molecules may comprise molecules that undergo redox reactions, such as rotaxanes and catenanes, or may comprise molecules that undergo an electric-field-induced band gap change that causes the molecules, or a portion thereof, to rotate, bend, twist, or otherwise change from a substantially fully conjugated state to a less conjugated state. The change in states in the latter case results in a change in electrical conductivity.
Abstract:
Classes of molecules are disclosed which can, for example, be used in molecular switches. The classes of molecules include at least three segments—an electronic donor (“D”), a switchable bridge (“B”), and an electronic acceptor (“A”)—chemically connected and linearly arranged (e.g., D-B-A). The electronic donor can be an aromatic ring system with at least one electron donating group covalently attached; an aromatic ring system with an electron withdrawing group covalently attached is usually employed as the electronic acceptor; and the switchable bridge can be a pi system that can be switched on or off using an external electric field.