An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer includes, as a first host material, a first compound that includes at least one group represented by a formula (11) below, the first compound being represented by a formula (1) below, the second emitting layer includes a second compound represented by a formula (2A) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer.

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The present invention includes novel compounds containing deuterated or partially deuterated xanthene and thioxanthene structures. These compounds may be useful as host materials with high triplet energies for phosphorescent electroluminescent devices.

The present invention includes novel compounds containing deuterated or partially deuterated xanthene and thioxanthene structures. These compounds may be useful as host materials with high triplet energies for phosphorescent electroluminescent devices.

Compositions and methods for visualizing tissue under illumination with near-infrared radiation, including compounds comprising near-infrared, closed chain, sulfo-cyanine dyes and prostate specific membrane antigen ligands are disclosed.

Compositions and methods for visualizing tissue under illumination with near-infrared radiation, including compounds comprising near-infrared, closed chain, sulfo-cyanine dyes and prostate specific membrane antigen ligands are disclosed.

The invention relates to novel, water-soluble fluorescent dyes with high fluorescence quantum yield based on oxygen-containing heterocycles, their reactive derivatives and dye conjugates, and their use for labelling samples and detecting analytes. The compounds of the new dye class are compatible with commercial excitation light sources and are characterised by Stokes shifts of more than 50 nm.

The invention relates to novel, water-soluble fluorescent dyes with high fluorescence quantum yield based on oxygen-containing heterocycles, their reactive derivatives and dye conjugates, and their use for labelling samples and detecting analytes. The compounds of the new dye class are compatible with commercial excitation light sources and are characterised by Stokes shifts of more than 50 nm.

Tagging agents, including fluorescent monomers, which may be polymerized. Anti-scalant polymer compositions that include a copolymer of a tagging agent and an anti-scalant monomer. Methods for synthesizing tagging agents, anti-scalant polymer compositions, and detecting an anti-scalant polymer composition.

Tagging agents, including fluorescent monomers, which may be polymerized. Anti-scalant polymer compositions that include a copolymer of a tagging agent and an anti-scalant monomer. Methods for synthesizing tagging agents, anti-scalant polymer compositions, and detecting an anti-scalant polymer composition.

Chromogenic conjugates for color-based detection of targets are described. The conjugates comprise a chromogenic moiety such as a rhodamine, rhodol or fluorescein. The chromogenic moiety is linked to a peroxidase substrate. The chromogenic conjugates can be used in immunohistochemical analysis and in situ hybridization. The conjugates can be used to detect 1, 2, 3 or more targets in a sample by color.