Abstract: Substantially solvent-free aqueous polyurethane dispersions and methods of making and using the same are provided. The substantially solvent-free aqueous polyurethane dispersions are provided in a substantially solvent-free system of a prepolymer made by reacting at least one polyol, at least one polyisocyanate, at least one isocyanate-reactive compound comprising one or more ionic or potential ionic groups, and at least one isocyanate chain terminating agent.

Abstract: Azatriphenylene derivatives and their use in the electron-transporting layer of an electroluminescent device that comprises an anode, a spaced-apart cathode, and at least one electron-transporting layer disposed between the spaced-apart anode and cathode. Such EL devices provide lower drive voltage, improved power efficiency, and longer operational lifetime.

Abstract: The present invention relates to a photosensitive organic semiconductor composition comprising an organic p-type semiconductor pigment with a p-type conducting polymer, wherein the ionization potentials of the organic p-type semiconductor pigment and the p-type conducting polymer are nominally equivalent and a photosensitive organic semiconductor composition comprising an organic n-type semiconductor pigment with an n-type conducting polymer, wherein the electron affinities of the organic semiconductor pigment and the conducting polymer are nominally equivalent. The present invention also relates to a p/n heterojunction utilizing the photosensitive organic semiconductor compositions.

Abstract: An aqueous dispersion and a method for making an aqueous dispersion. The dispersion including at least one conductive polymer, such as a polythienothiophene, at least one hyperbranched polymer and optionally at least one colloid-forming polymeric acid and one non-fluorinated polymeric acid. Devices utilizing layers formed of the aqueous dispersions are also disclosed.

Abstract: An aqueous dispersion and a method for making an aqueous dispersion. The dispersion including at least one conductive polymer such as a polythienothiophene, at least one polyurethane polymer and optionally at least one colloid-forming polymeric acid and one non-fluorinated polymeric acid. Devices utilizing layers formed of the inventive dispersions are also disclosed.

Abstract: A process for fabricating a thin film semiconductor device includes the following steps, but not necessarily in the noted order. Firstly, a thin film of organic semiconductor material is deposited onto a substrate. This thin film of organic semiconductor material comprises organic semiconductor material that comprises one or more aryl dicarboxylic diimidazole-based compounds of claim 1 such that the film exhibits a field effect electron mobility that is greater than 0.005 cm2/Vs. Then, the process includes forming a spaced apart source electrode and drain electrode, wherein the source electrode and the drain electrode are separated by and electrically connected with, the n-channel semiconductor film. A gate electrode is then formed, spaced apart from the semiconductor material. One or more of the thin film semiconductor devices (or transistors) can be incorporated into an electronic device.

Abstract: A thin film transistor comprises a layer of organic semiconductor material comprising an organic semiconductor material that comprises an aryl dicarboxylic acid diimidazole-based compound. Such transistors can further comprise spaced apart first and second contact means or electrodes in contact with said material. Further disclosed is a process for fabricating ac thin film transistor device, preferably by sublimation or solution-phase deposition onto a substrate, wherein the substrate temperature is no more than 150° C.

Abstract: An aqueous dispersion and a method for making an aqueous dispersion. The dispersion including at least one conductive polymer such as a polythienothiophene, at least one ether containing polymer and optionally at least one colloid-forming polymeric acid and one non-fluorinated polymeric acid. Devices utilizing layers formed of the inventive dispersions are also disclosed.

Abstract: A nanoparticulate imaging probe with an oxide core, a biocompatible polymeric shell covalently attached to the oxide core, a dye, and a cleavable spacer that covalently binds the dye to the probe. When the spacer is cleaved, the dye is liberated from the probe. The emissions of the dye are quenched when the dye is bound to the probe and not quenched when the dye is liberated from the probe. The spacer can be, for example, a peptide. The oxide core can be, for example, a silicon oxide core.

Abstract: Azatriphenylene derivatives and their use in the electron-transporting layer of an electroluminescent device that comprises an anode, a spaced-apart cathode, and at least one electron-transporting layer disposed between the spaced-apart anode and cathode. Such EL devices provide lower drive voltage, improved power efficiency, and longer operational lifetime.

Abstract: A nanoparticulate imaging probe with an oxide core, a biocompatible polymeric shell covalently attached to the oxide core, a dye, and a cleavable spacer that covalently binds the dye to the probe. When the spacer is cleaved, the dye is liberated from the probe. The emissions of the dye are quenched when the dye is bound to the probe and not quenched when the dye is liberated from the probe. The spacer can be, for example, a peptide. The oxide core can be, for example, a silicon oxide core.

Abstract: An apparatus for multimodal imaging of an object includes a support stage for receiving an object to be imaged; an object supported on the stage, the object having been treated with a biocompatible imaging probe comprising nanoparticles carrying one or more targeting moieties and one or more diagnostic components for enabling capture of images of the object; a light source for producing a beam to illuminate the object; a filter positioned to receive and pass the beam toward the object; and a lens and camera system for capturing an image of the object. The apparatus may include a tiltable filter for filtering light from the source.

Abstract: An organic material having a 6-member ring structure represented by the following formulae (I), wherein: ring A, ring B, and ring C each include substituted or un-substituted aromatic rings comprising 6 to 60 carbon atoms, or substituted or un-substituted heteroaromatic rings comprising 4 to 60 carbon atoms, and ring A and ring C form a fused aromatic or heteroaromatic structure; X is a carbon atom, a nitrogen atom, a sulfur atom, a silicon atom, an oxygen atom, a phosphorus atom, a selenium atom, or a germanium atom.

Abstract: A thin film transistor comprises a layer of organic semiconductor material comprising an organic semiconductor material that comprises fused-fluorene-containing materials. Such transistors can further comprise spaced apart first and second contact means or electrodes in contact with said material. Further disclosed is a process for fabricating a thin film transistor device, preferably by sublimation or solution-phase deposition onto a substrate, wherein the substrate temperature is no more than 150° C.

Abstract: A thin film transistor comprises a layer of organic semiconductor material comprising an organic semiconductor material that comprises an aryl dicarboxylic acid diimidazole-based compound. Such transistors can further comprise spaced apart first and second contact means or electrodes in contact with said material. Further disclosed is a process for fabricating ac thin film transistor device, preferably by sublimation or solution-phase deposition onto a substrate, wherein the substrate temperature is no more than 150° C.

Abstract: The present invention relates to a nanoparticle comprising self-assembled crosslinked, amphiphilic block copolymers and at least one immobilized dye, wherein the self-assembled, crosslinked, amphiphilic block copolymers comprise a hydrophilic block and a hydrophobic block, wherein the self-assembled, crosslinked, amphiphilic block copolymers are self-assembled to form a core of the nanoparticle comprising a hydrophobic block, wherein the hydrophobic block is derived from at least one pendant multifunctional crosslinked alkoxy silane or amino silane moiety, and an exterior of the nanoparticle comprising a hydrophilic block, and wherein the immobilized dye is immobilized in the core.

Abstract: An organic molecular compound comprising a complex fluorene structure having either: wherein: X1, X2, X3, and X4 are individually the same or different and include a moiety containing at least one CH and one N; R1, R2, R3, and R4 are substituents each being individually hydrogen, or amino, or alkyl, or alkenyl, or alkynyl, or alkoxy of from 1 to 40 carbon atoms; aryl or substituted aryl of from 6 to 60 carbon atoms; or heteroaryl or substituted heteroaryl of from 4 to 60 carbons; or F, Cl, or Br; or a cyano group; or a nitro group; or R3, or R4 or both are groups that form fused aromatic or heteroaromatic rings; or R1 and R2 together form a cyclic ring having 3 to 20 carbon, nitrogen, sulfur or oxygen atoms; or R1 and R2 together form a double bond moiety.

Abstract: The present invention relates to a photosensitive organic semiconductor composition comprising an organic p-type semiconductor pigment with a p-type conducting polymer, wherein the ionization potentials of the organic p-type semiconductor pigment and the p-type conducting polymer are nominally equivalent and a photosensitive organic semiconductor composition comprising an organic n-type semiconductor pigment with an n-type conducting polymer, wherein the electron affinities of the organic semiconductor pigment and the conducting polymer are nominally equivalent. The present invention also relates to a p/n heterojunction utilizing the photosensitive organic semiconductor compositions.

Abstract: An electroluminescent device, including a spaced-apart anode and cathode and an organic layer disposed between the spaced-apart anode and cathode and including a polymer having arylamine repeating unit moiety represented by formula wherein: Ar, Ar1, Ar2, Ar3, and Ar4 are each individually arylof from 6 to 60 carbon atoms; or a heteroarylof from 4 to 60 carbons, or combinations thereof; or Ar1 and Ar2, Ar3 and Ar4, Ar1 and Ar4, Ar2 and Ar4 are connected through a chemical bond; and X is a conjugated group having 2 to 60 carbon atoms.

Abstract: The present invention relates to a photosensitive organic semiconductor composition comprising an organic p-type semiconductor pigment with a p-type conducting polymer, wherein the ionization potentials of the organic p-type semiconductor pigment and the p-type conducting polymer are nominally equivalent and a photosensitive organic semiconductor composition comprising an organic n-type semiconductor pigment with an n-type conducting polymer, wherein the electron affinities of the organic semiconductor pigment and the conducting polymer are nominally equivalent. The present invention also relates to a p/n heterojunction utilizing the photosensitive organic semiconductor compositions.