The present invention relates to an electrochromic compound, and an electrochromic composition and an electrochromic device, including the same. The electrochromic compound according to the present invention may achieve excellent black coloring effects and excellent curing characteristics, and thus may be used advantageously in an electrochromic device.

The present invention relates to curable photochromic compositions which include an at least di-functional oxazoline functional material, an at least di-functional first carboxylic acid functional material, an optional second carboxylic acid functional material having at least three carboxylic acid groups, which optionally includes a carboxylic acid functional polymer, and a photochromic compound. The curable photochromic compositions have an equivalents ratio of oxazoline equivalents of the oxazoline functional material to a total carboxylic acid equivalents of the first and optional second carboxylic acid functional materials of from 0.5:1 to 10:1 when the second carboxylic acid functional material is not present, and from 0.5:1 to 3:1 when the second carboxylic acid functional material is present. The present invention, more particularly, relates to curable photochromic adhesive compositions, and curable photochromic coating compositions.

The present invention relates to curable photochromic compositions which include an at least di-functional oxazoline functional material, an at least di-functional first carboxylic acid functional material, an optional second carboxylic acid functional material having at least three carboxylic acid groups, which optionally includes a carboxylic acid functional polymer, and a photochromic compound. The curable photochromic compositions have an equivalents ratio of oxazoline equivalents of the oxazoline functional material to a total carboxylic acid equivalents of the first and optional second carboxylic acid functional materials of from 0.5:1 to 10:1 when the second carboxylic acid functional material is not present, and from 0.5:1 to 3:1 when the second carboxylic acid functional material is present. The present invention, more particularly, relates to curable photochromic adhesive compositions, and curable photochromic coating compositions.

Disclosed is a new class of photo-responsive coordination compounds with at least one photochromic unit on a coordinating ligand. The photo-responsive coordination compounds are shown to be capable of acting as electroactive materials for the fabrication of organic memory devices as well as photo-controllable electron-transporting materials.

Disclosed is a new class of photo-responsive coordination compounds with at least one photochromic unit on a coordinating ligand. The photo-responsive coordination compounds are shown to be capable of acting as electroactive materials for the fabrication of organic memory devices as well as photo-controllable electron-transporting materials.

An object of the present invention is to provide a temperature detection material that can be manufactured through a simple step and is excellent in handleability. In order to solve the above problem, the temperature detection material according to the present invention includes a temperature-indicating material including a leuco dye, a color developer, and a color eraser and a matrix material; and is characterized in that the matrix material is in a solid state, a melting point of the matrix material is higher than a melting point of the temperature-indicating material, and a phase separation structure in which the temperature-indicating material disperses in the matrix material is formed.

An object of the present invention is to provide a temperature detection material that can be manufactured through a simple step and is excellent in handleability. In order to solve the above problem, the temperature detection material according to the present invention includes a temperature-indicating material including a leuco dye, a color developer, and a color eraser and a matrix material; and is characterized in that the matrix material is in a solid state, a melting point of the matrix material is higher than a melting point of the temperature-indicating material, and a phase separation structure in which the temperature-indicating material disperses in the matrix material is formed.

The present disclosure generally relates to optoelectronic compounds, including certain 1,2-diketones, for example, 2,3,5,6-tetrafluoro-4-[2-oxo-2-(4-oxo-3-chromenyl)acetyl]benzonitrile. In certain embodiments, these compounds can be used as electrochromic media in devices requiring change of optical absorbance or transmittance as a function of applied voltage. Examples of such devices include electrochromic mirrors, windows, displays, or the like. One specific example is solar and thermal control by smart, dynamic windows for energy-efficient buildings. Other embodiments of the disclosure are generally directed to systems and devices using such compounds, methods of using such compounds, e.g., to control the absorbance or transmittance of light, kits involving such compounds, or the like.

The present disclosure generally relates to optoelectronic compounds, including certain 1,2-diketones, for example, 2,3,5,6-tetrafluoro-4-[2-oxo-2-(4-oxo-3-chromenyl)acetyl]benzonitrile. In certain embodiments, these compounds can be used as electrochromic media in devices requiring change of optical absorbance or transmittance as a function of applied voltage. Examples of such devices include electrochromic mirrors, windows, displays, or the like. One specific example is solar and thermal control by smart, dynamic windows for energy-efficient buildings. Other embodiments of the disclosure are generally directed to systems and devices using such compounds, methods of using such compounds, e.g., to control the absorbance or transmittance of light, kits involving such compounds, or the like.

A problem is presented in that conventional photochromic compounds cannot be considered adequate in terms of the colorizing/decolorizing rate and durability, and the production process therefore has many steps. The present invention provides an industrially applicable photochromic compound that has both a rapid colorizing/decolorizing reaction and high durability and can also be synthesized at a low cost. This compound is characterized in that etheric oxygen atoms are bonded to the carbon atoms at position 1 of a pyranoquinazoline (8H-pyrano[3,2-f]quinazoline) skeleton and position 10 of a naphthopyran (3H-naphtho[2,1-b]pyran) skeleton, said compound having photochromic properties and being a photochromic compound that has both a rapid colorizing/decolorizing reaction and high durability. Also provided is an industrially applicable photochromic compound that can be synthesized at a low cost.