A capsule comprising a capsule wall and an electrophoretic fluid encapsulated by the capsule wall. The capsule wall comprises a cross-linked nonionic, water-soluble or water-dispersible polymer. The electrophoretic fluid comprises a suspending fluid, first pigment particles, second pigment particles, and third pigment particles. In some embodiments, the electrophoretic fluid includes a fourth electrophoretic particle. The first, second, and third particles are electrically charged, suspended in the suspending fluid, and capable of moving through the suspending fluid upon application of an electric field to the capsule.

Quantum dot semiconductor nanoparticle compositions that incorporate ions such as zinc, aluminum, calcium, or magnesium into the quantum dot core have been found to be more stable to Ostwald ripening. A core-shell quantum dot may have a core of a semiconductor material that includes indium, magnesium, and phosphorus ions. Ions such as zinc, calcium, and/or aluminum may be included in addition to, or in place of, magnesium. The core may further include other ions, such as selenium, and/or sulfur. The core may be coated with one (or more) shells of semiconductor material. Example shell semiconductor materials include semiconductors containing zinc, sulfur, selenium, iron and/or oxygen ions.

Nanoparticles for use in the treatment of a well have a magnetic core of iron, nickel or cobalt or an alloy thereof; a carbon shell encapsulating the magnetic core; at least one organic functional group on the surface of the carbon shell through covalent bonding; and a coating of amorphous carbon nitride encapsulating the functionalized carbon shell. The nanoparticles may be used to identify fluids produced from the reservoir, identify the zone within the reservoir from which recovered fluid is produced, in water flooding to determine water breakthrough in the production well and to identify those injection wells from which breakthrough water originates.

In an aspect, an artificial selenomelanin material comprises: one or more selenomelanin polymers; wherein the one or more selenomelanin polymers comprise a plurality of covalently bonded selenomelanin base units; and wherein a chemical formula of each of the one or more selenomelanin base units comprises at least one selenium atom. Optionally, each selenomelanin polymer is a pheomelanin. Preferably, the chemical formula of each of the one or more selenomelanin base units comprises at least one covalent bond with each of the at least one selenium atom.

A compound represented by specific chemical formula, a core including the same, and core-shell dye including a shell surrounding the core, a photosensitive resin composition including the same, and a color filter manufactured using the photosensitive resin composition are disclosed.

An article that includes a fluorescent composition having at least one of a fluorescent sensor compound and organic reporter molecules encapsulated in a microsphere structure. When encapsulated, the fluorescent sensor compound and the organic reporter molecules are distributed in a liquid organic matrix. When non-encapsulated, the remaining one of the fluorescent sensor compound and the organic reporter molecules reside in the matrix. In response to a force applied to the composition sufficient to break at least a portion of the microsphere structure, the fluorescent sensor compound and the organic reporter molecules are transformed into a non-reversible fluorescent state exhibiting a quantum yield greater than 0.2. The fluorescent state is objectively visually verifiable without physically contacting the composition.

Provided are processes of functionalizing a microparticle that include reacting a microparticle expressing a carboxylic acid with a functionalization linker including the structure N-L.sup.1-A where N is a free amine, L.sup.1 is a linker, and A is an azide and an alkyne terminated group, to form a functional group terminated microparticle, and forming a functionalized microparticle by reacting the functional group terminated microparticle with a peptide including a terminal functional group comprising an alkyne or azide, where the peptide includes the structure F-L.sup.2-Peptide, where F is a functional group and L.sup.2 is a linker. Also provided are compositions suitable for effectively coupling a peptide to a microsphere and functionalized microspheres suitable for reacting with a detection agent.

Thin films of organic semiconducting material comprising perylene diimide small molecules with pyrrolic N—H bonds. Films are prepared using green solvents including water and alcohols. The films can be solvent-resistant and generally range in thickness from 10 to 1000 nm. Perylene diimide molecules are dissolved in solvent by addition of a base to polarize the pyrrolic N—H bond believed to generate an ionic salt in alcohol or aqueous solution. Devices containing such films are provided. Methods of making films and methods of using films in OPV device applications and in amine sensors are provided.

Proposed are a microcapsule having a core-shell structure that has high-temperature durability and solvent resistance and is environment-friendly. The microcapsule includes a core portion containing a hydrophobic active component and a shell portion surrounding the core portion and containing a silane crosslinkable polyurethane-based resin derived from a crosslinkable alkoxy silane group-terminated prepolymer.

This invention relates to a process for the preparation of a dispersion comprising black polymer particles, such black polymer particles prepared by the process, the use of the dispersion and the black polymer particles in electrophoretic fluids, and electrophoretic display devices comprising such fluids.