In an ultraviolet-curable resin composition for an optical fiber coating, the polarity parameter E.sub.T(30) of the resin composition is 47 to 61.

Fluorescent chromophores nicknamed BOPHY are provided. The chromophores may be readily synthesized in two steps from readily available reagents via the coupling of a pyrrole aldehyde or ketone with hydrazine, followed by reaction with BF.sub.3. The resultant symmetric and dimeric tetracycle is comprised of two BF.sub.2 units in six-member chelate rings, appended by pyrrole units on the periphery. The quantum yield of fluorescence for the unmodified compound and the tetramethyl variant are near unity, with values 95 and 92% respectively in CH.sub.2Cl.sub.2.

Provided are a sublimation thermal transfer sheet and a combination of a sublimation thermal transfer sheet and a transfer receiving article that meet the demand for increase in the density of a color image to be formed, that prevent decrease in the adhesiveness of a protective layer optionally formed on the color image.

In a sublimation thermal transfer sheet including a substrate and yellow, magenta, and cyan colorant layers provided on one surface of the substrate, the yellow, magenta, and cyan colorant layers each contain at least a binder resin and a sublimable dye having a molar absorption coefficient of not less than 50000 and a molecular weight of not more than 650, and the average of the mass ratios of the respective binder resins and sublimable dyes (sublimable dye/binder resin) in the yellow, magenta, and cyan colorant layers is not less than 0.7.

A method for manufacturing a compound comprising at least one imine group, the method comprising a step of reaction between a first compound comprising at least one amine group and a second compound comprising at least one carbonyl group, the reaction step being carried out in the presence of at least one supercritical fluid.

The present invention relates to a random lasing photo-curable composition (1) for use as random lasing gain medium comprising:laser dye molecules (11);an optical glue (12) for the laser dye molecules to be suspended therein; wherein the optical glue is mercapto ester-based and comprises methacrylate and/or derivatives thereof. The present invention also relates to a random lasing system with a gain medium made of at least partially of random lasing photo-curable composition, and methods for manufacturing such random lasing system.

Triazabutadiene molecules as cleavable cross-linkers adapted to cross-link components with click chemistry, e.g., clickable triazabutadienes. For example, in some embodiments, the triazabutadienes feature alkyne handles attached to the imidazole portion or the aryl portion of the triazabutadienes, wherein the alkyne handles can link to azide handles (e.g., azide handles disposed on other components) via click chemistry. Also described are methods of producing said clickable triazabutadienes and methods of use of said clickable triazabutadienes. The present invention also features methods of cleaving said clickable triazabutadienes, e.g., for liberating the diazonium species for further chemical reactions.

The azomethine compound provided by this case is a compound showing high chroma and having excellent light resistance.

An object is to provide a compound having high color developability and excellent heat resistance, and a resist composition for a color filter and a color filter that contain the dye composition. Another object is to provide a dyed polyamide fiber product having excellent wet rubbing fastness. The objects are achieved by a compound represented by the following general formula (1):

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A phosphorescent metal complex is provided, which comprises a metallic central atom M and at least one ligand coordinated by the metallic central atom M, wherein the one metallic central atom M and the ligand form a six-membered metallacyclic ring. Additionally specified are a radiation-emitting component comprising a metal complex, and a process for preparing the metal complex.

Provided is an orange ink composition for a sublimation transfer, which contains an aromatic compound having a specific structure.