An electrochromic compound represented by the following formula (1) is provided:

##STR00001## where each of R.sub.1 to R.sub.9 and Ar.sub.1 to Ar.sub.6 independently represents one of a hydrogen atom, a halogen atom, a monovalent organic group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, a group in which two or more aryl and/or heteroaryl groups are condensed with each other to form a ring, and a polymerizable functional group; and at least one of Ar.sub.1 to Ar.sub.6 represents an aryl group, a heteroaryl group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, or a group in which at least two aryl or heteroaryl groups are condensed with each other to form a ring.

An electrochromic compound represented by the following formula (1) is provided:

##STR00001## where each of R.sub.1 to R.sub.9 and Ar.sub.1 to Ar.sub.6 independently represents one of a hydrogen atom, a halogen atom, a monovalent organic group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, a group in which two or more aryl and/or heteroaryl groups are condensed with each other to form a ring, and a polymerizable functional group; and at least one of Ar.sub.1 to Ar.sub.6 represents an aryl group, a heteroaryl group, a group in which two or more aryl and/or heteroaryl groups are bound to each other via a covalent bond, or a group in which at least two aryl or heteroaryl groups are condensed with each other to form a ring.

A curable composition that gives a cured product exhibiting a high refractive index and a surface without defects such as roughness or cracks, a cured product of the composition, and a compound that may be blended to the composition. A triazine compound is used as a curable component in a curable composition, the triazine compound having an optionally substituted quinolinyl group, an optionally substituted isoquinolinyl group, or an optionally substituted 2-substituted benzothiazolyl group and an aromatic-ring-containing group having a radically polymerizable group-containing group or an aromatic-ring-containing group having a cationically polymerizable group-containing group, each group bonded to the triazine ring via an amino group.

Provided are a cathode hybrid electrolyte for a solid secondary battery, a cathode including the cathode hybrid electrolyte, a method of preparing the cathode, and a solid secondary battery including the cathode hybrid electrolyte, wherein the cathode hybrid electrolyte includes an ion conductor represented by Formula 1, and an ionic liquid, where at least a portion of the anions of the ionic liquid comprise the same anionic moiety Y.sup. of the ion conductor, ##STR00001## where, in Formula 1, X, R.sub.1 to R.sub.3, Y.sup., and n are the same as defined in the detailed description.

Provided are a cathode hybrid electrolyte for a solid secondary battery, a cathode including the cathode hybrid electrolyte, a method of preparing the cathode, and a solid secondary battery including the cathode hybrid electrolyte, wherein the cathode hybrid electrolyte includes an ion conductor represented by Formula 1, and an ionic liquid, where at least a portion of the anions of the ionic liquid comprise the same anionic moiety Y.sup. of the ion conductor, ##STR00001## where, in Formula 1, X, R.sub.1 to R.sub.3, Y.sup., and n are the same as defined in the detailed description.

A polymer compound for a conductive polymer including one or more repeating units a shown by the following general formula (1), and having a weight-average molecular weight in the range of 1,000 to 500,000, ##STR00001##
wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents any of a single bond, an ester group, and a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms and optionally containing either or both of an ether group and an ester group; R.sup.3 represents a linear or branched alkyl group having 1 to 4 carbon atoms with one or more hydrogen atoms in R.sup.3 being substituted by a fluorine atom(s); Z represents any of a single bond, a phenylene group, a naphthylene group, an ether group, and an ester group; and a is a number satisfying 0<a1.0.

A polymer compound for a conductive polymer including one or more repeating units a shown by the following general formula (1), and having a weight-average molecular weight in the range of 1,000 to 500,000, ##STR00001##
wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents any of a single bond, an ester group, and a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms and optionally containing either or both of an ether group and an ester group; R.sup.3 represents a linear or branched alkyl group having 1 to 4 carbon atoms with one or more hydrogen atoms in R.sup.3 being substituted by a fluorine atom(s); Z represents any of a single bond, a phenylene group, a naphthylene group, an ether group, and an ester group; and a is a number satisfying 0<a1.0.

A polymer compound for a conductive polymer including one or more repeating units represented by general formula (1), which has been synthesized by ion-exchange of a lithium salt, sodium salt, potassium salt, or nitrogen compound salt of a sulfonic acid residue, and has a weight average molecular weight in the range of 1,000 to 500,000, ##STR00001##
wherein R.sup.1 represents a hydrogen atom or methyl group, R.sup.2 represents a single bond, an ester group, or a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms which may have either or both of an ether group and an ester group, and Z represents a phenylene group, naphthylene group, or ester group. There can be provided a polymer compound for a conductive polymer having a specific super strongly acidic sulfo group, which is soluble in an organic solvent, and suitably used for a fuel cell or dopant for a conductive material.

A polymer compound for a conductive polymer including one or more repeating units represented by general formula (1), which has been synthesized by ion-exchange of a lithium salt, sodium salt, potassium salt, or nitrogen compound salt of a sulfonic acid residue, and has a weight average molecular weight in the range of 1,000 to 500,000, ##STR00001##
wherein R.sup.1 represents a hydrogen atom or methyl group, R.sup.2 represents a single bond, an ester group, or a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms which may have either or both of an ether group and an ester group, and Z represents a phenylene group, naphthylene group, or ester group. There can be provided a polymer compound for a conductive polymer having a specific super strongly acidic sulfo group, which is soluble in an organic solvent, and suitably used for a fuel cell or dopant for a conductive material.

A conductive polymer composite including a -conjugated polymer and a dopant polymer contain a repeating unit a represented by the following formula (1) and has a weight-average molecular weight with range of 1,000 to 500,000, ##STR00001##
wherein R.sup.1 represents a hydrogen atom or methyl group; R.sup.2 represents a single bond, ether group, ester group, or a linear, branched, or cyclic hydrocarbon group having 1-12 carbon atoms and optionally containing an ether group and ester group; R.sup.3 represents a linear or branched alkylene group having 1-4 carbon atoms wherein 1 or 2 hydrogen atoms in R.sup.3 may be substituted with a fluorine atom; Z represents a phenylene group, naphthylene group, or ester group; and a is a number satisfying 0<a1.0. A conductive polymer composite has excellent filterability and film-formability by spin coating, and can form a conductive film having high transparency and flatness when film is formed from the composite.