The problem of the present invention is to overcome drawbacks of conventional optical filters such as near-infrared cut filters and to provide an optical filter which generates little scatted light even during light absorption and has excellent transmittance property. The optical filter of the present invention is characterized by containing a squarylium-based compound and a compound which absorbs or quenches fluorescence of the squarylium-based compound. The optical filter of the present invention preferably contains a near-infrared absorbing dye containing a squarylium compound (A) and at least one compound (B) selected from the group consisting of a phthalocyanine-based compound (B-1) and a cyanine-based compound (B-2).

The problem of the present invention is to overcome drawbacks of conventional optical filters such as near-infrared cut filters and to provide an optical filter which generates little scatted light even during light absorption and has excellent transmittance property. The optical filter of the present invention is characterized by containing a squarylium-based compound and a compound which absorbs or quenches fluorescence of the squarylium-based compound. The optical filter of the present invention preferably contains a near-infrared absorbing dye containing a squarylium compound (A) and at least one compound (B) selected from the group consisting of a phthalocyanine-based compound (B-1) and a cyanine-based compound (B-2).

The present disclosure provides encoded chromophoric polymer particles that are capable of, for example, optical and/or biomolecular encoding of analytes. The present disclosure also provides suspensions comprising a plurality of encoded chromophoric polymer particles. The present disclosure also provides methods of using the encoded chromophoric polymer particles and systems for performing multiplex analysis with encoded chromophoric polymer particles.

Fluorescent polymeric coating films visible in near-infrared light for coating a medical device are provided, and a method for preparing said NIR visible polymeric coating films. In particular, the fluorescent polymeric coating films visible in near-infrared light for coating a medical device are in the form of a single layer or multiple layers where said single layer or at least one of said multiple layers comprises a hydrophobic polymer, a ionic fluorescent dye and a counterion of said ionic fluorescent dye. The fluorescent dye is a near-infrared dye which belongs to the family of long-chain cyanine 7.5 derivatives, and their analogues.

The present application provides pH-sensitive fluorophores, pharmaceutical compositions comprising pH-sensitive fluorophores, and methods for imaging of cancerous tumors comprising administering to the subject an effective amount of a compound or a pharmaceutical composition, waiting a time sufficient to allow the compound to accumulate in the cancerous tumor to be imaged, and imaging the cancerous tumor with a fluorescence imaging technique. Further provided methods of treating cancer, comprising imaging a cancerous tumor in a subject; and surgically removing the cancerous tumor from the subject.

The present disclosure is directed, in general, to (1) nonlinear optical (NLO) chromophores containing spirofluorene-isophorone bridging groups, including (2) compositions/materials/resistive layers comprising NLO chromophores containing spirofluorene-isophorone bridging groups, and the methods of making the compositions/materials/resistive layers comprising NLO chromophores containing spirofluorene-isophorone bridging groups (e.g., methods of poling and/or drying, and the like), (3) uses of NLO chromophores containing spirofluorene-isophorone bridging groups in electro-optic devices (e.g., EOMs).

Provided are absorbents and their uses. The absorbent is an organic absorbent. It exhibits excellent compatibility or solubility with various solvents and resin components and has excellent heat resistance. Thus, its optical properties can be stably maintained even when it is maintained under high temperature or high temperature/high humidity conditions. By applying the absorbent, an absorption membrane that obtains desired optical properties can be provided. The specification also provides the use of the absorbent or an absorption membrane.

The present application relates to dyes containing a tricyclic polymethine core and their uses as fluorescent labels. These dyes may be used as fluorescent labels for nucleotides in nucleic acid sequencing applications.

The present invention provides dioxetane-based chemiluminescence probes, more specifically fluorophore-tethered dioxetane-based chemiluminescence probes and compositions thereof. The chemiluminescence probes disclosed are useful for both diagnostics and in vivo imaging.

Provided is an image sensor including a substrate including a first surface and a second surface opposite to the first surface, and a near-infrared light-blocking filter disposed on the second surface of the substrate. The substrate includes a plurality of pixels, the plurality of pixels each includes a photoelectric conversion region, the near-infrared light-blocking filter includes a mixture of a first cyanine dye, a second cyanine dye, and a third cyanine dye, the first cyanine dye is represented by General Formula 1, the second cyanine dye is represented by General Formula 2, and the third cyanine dye is represented by General Formula 3 or General Formula 4.