Abstract: Provided are a polymerizable liquid crystal composition, a coating material, a medium, and a polarizing device each produced using a polymerizable liquid crystal compound and a colorant and each capable of producing polarized light suitable for polarizing devices, and also a novel naphtholactam derivative, a novel coumarin derivative, a novel Nile Red derivative, and a novel anthracene derivative each suitable for use as the colorant. Specifically provided are a polymerizable liquid crystal composition containing (A) at least one liquid crystal compound having a polymerizable functional group, (B) at least one colorant, and (C) a polymerization initiator, and a novel naphtholactam derivative of formula (IV?), a novel coumarin derivative of formula (VI?), a novel Nile Red derivative of formula (VII?), and a novel anthracene derivative of formula (VIII?) each suitable for use as the colorant (B).

Abstract: The photoelectric conversion device described herein includes a working electrode having a dye-supported metal oxide electrode in which a dye is supported on a metal oxide layer. The dye includes a structure represented by general formula (I) wherein A is a structure having a maximum absorption wavelength ?max of 350 to 500 nm in a methanol solution; B is a cyanine skeleton having a maximum absorption wavelength ?max of 500 to 700 nm in a methanol solution; Z1 is any one divalent linking group selected from —CONR—, —NRCO—, —SO2NR—, and —NRSO2—; R in Z1 is a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or an arylalkyl group having 7 to 20 carbon atoms; Y1 and Y2 are each independently an alkylene group having 1 to 8 carbon atoms, or a single bond, and may be the same or different; r is 1 or 2; m and n are each independently an integer of 0 to 2; and (m+n) is 1 or more.

Abstract: Provided are an additive for an electrolytic composition which can suppress the decrease of a short-circuit current and improve an open circuit voltage as compared to the case when conventional 4-TBpy is used as an additive for an electrolytic composition, and an electrolytic composition using this additive and a dye-sensitized solar cell. The additive for an electrolytic composition for use in a dye-sensitized solar cell contains a pyridine derivative having a pyridine ring into which an alkylsilyl group is introduced, and it is preferable that this pyridine derivative has an alkylsilyl group at the 4-position of the pyridine ring, and it is more preferable that the pyridine derivative is 4-(trimethylsilyl)pyridine.

Abstract: A photoelectric conversion element includes a working electrode having a dye-supported metal oxide electrode in which a dye is supported on a metal oxide layer, a compound having a structure represented by the following general formula (1): is used as the dye. wherein R1 to R4 are each independently a linear alkyl group having 4 to 20 carbon atoms and may be the same or different; A1 and A2 are each any one selected from the following aromatic ring group A (a pyrrole ring in the formula (1) is represented by an arc a to show a condensation position with the pyrrole ring), may be the same or different, and may have a substituent in an aromatic ring; Anp- is a p-valent anion; p is 1 or 2; and q is a coefficient for keeping a charge of the entire dye neutral.

Abstract: An optical recording material comprising at least one kind of chalcone type compound represented by the following general formula (I) or a metal complex using the chalcone type compound as a ligand: wherein ring A represents a 5- or 6-membered heterocyclic ring or an aromatic ring; ring B represents a 5- or 6-membered heterocyclic ring, an aromatic ring, or a metallocene structure; the above-mentioned heterocyclic and aromatic ring may be condensed with other rings or may be substituted; n is 0 or 1.

Abstract: An optical recording material comprising at least one kind of a cyanine compound represented by the following general formula (I): wherein ring A and ring B each independently represent a benzene ring or a naphthalene ring which may have a substituent; R1 represents a group represented by the general formula (II), (II?) or (II?); R2, R3 and R4 each independently represent a hydrogen atom, an organic group having 1 to 30 carbon atoms, or a group represented by the general formula (II), (II?) or (II?); R3 and R4 may be linked together to form a ring structure; Y1 and Y2 each independently represent an organic group having 1 to 30 carbon atoms or a group represented by the general formula (III); X represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, a phenyl group which may have a substituent, a benzyl group which may have a substituent, or a cyano group; Anm? represents an m-valent anion; m is 1 or 2; and p represents a coefficient keeping the charge neutral.

Abstract: A cyanine compound is represented by formula (I): A1: benzene or naphthalene ring. A3: 5- or 6-membered ring. R1, R2: hydrogen atom and the like. R7: an alkyl group and the like. R12: a substituent by formula (II) or (II?). R20: a hydrogen atom and the like. Anq-: a q-valent anion. q: 1 or 2; p: a coefficient for neutral charge. In formula (II): bond between L and T is a double, conjugated double, or triple bond. L: carbon atom. T: carbon, oxygen, sulfur, or nitrogen atom. x, y, z: 0 or 1. s: 0-4. R13: hydrogen atom and the like. R14, R15, and R16: hydrogen atom and the like. In formula (II?), the bond between L? and T? is a double or conjugated double bond. L?: carbon atom. T?: carbon, oxygen, nitrogen atom. s?: 0-4. Ring containing L? and T?: 5-membered ring, may contain a heteroatom.

Abstract: An indolium compound is represented by formula (I): Ring A: a benzene or naphthalene ring. Ring B: 5- or 6-membered heterocyclic or aromatic ring. Z: alkyl group having 1-8 carbon atoms, may be substituted with a halogen atom or interrupted by —O—, —CO—, —OCO—, or —COO—, a sulfonyl group having a hydrocarbyl group having -8 carbon atoms, a sulfinyl group having a hydrocarbyl group having 1-8 carbon atoms, an alkylamino group having an alkyl group having 1-8 carbon atoms, a dialkylamino group having alkyl groups having 1-8 carbon atoms, a cyano group, a nitro group, a hydroxyl group, or a halogen group. R1: group represented by formula (II) or (II?). R2: organic group having 1-30 carbon atoms or group represented by formula (II), (II?), or (III). Y: group represented by formula (III). n: integer 0-4; Anm?: m-valent anion, m is 1 or 2. p: coefficient for neutral charge.

Abstract: Recording and reproducing characteristics and data saving reliability are secured in a write-once two-layer recording medium. A second recording layer from a side irradiated with light for recording and reproduction includes organic dye shown by a general formula of a chemical formula 3 described below (in the formula, R1 and R2 are alkyl groups of carbon number 1 to 4; Y1, Y2 respectively are organic groups independently; and X is Cl04, BF4, PF6, SbF6), and organic dye shown by a general formula of a chemical formula 4 described below (in the formula, R1, R4 are alkyl groups of carbon number 1 to 4; R2, R3 are alkyl groups of carbon number 1 to 4 or groups forming 3 to 6 membered rings by being coupled; Y1, Y2 respectively are organic groups independently; and X is Cl04, BF4, PF6, SbF6), to secure durability.

Abstract: A photoelectric conversion device capable of improving conversion efficiency is provided. The photoelectric conversion device includes a work electrode, a counter electrode, and an electrolyte-containing layer. In the work electrode, a metal oxide semiconductor layer supporting a dye is provided. The dye contains a cyanine compound. The cyanine compound has heterocyclic skeletons containing indolenine skeletons bonded with both ends of a methine chain, an anchor group introduced to a nitrogen atom contained in the indolenine skeletons, and a phenanthrene skeleton contained in one of the heterocyclic skeletons. In the case where light enters the dye, electron injection efficiency to the metal oxide semiconductor layer is improved.

Abstract: Disclosed is to provide with an optical recording medium of a write-once type in which an excellent recording characteristic can be obtained over low speed recording to high speed recording.

Abstract: An optical recording material containing a compound of formula (I): wherein R1 and R2 each represent hydrogen, hydroxyl, halogen, nitro, cyano, a C1-C30 organic group, or a group of formulae (II), (II?) or (III); or R1 and R2 are connected to form a ring; X1 is —CR3R4— or —NH—; Y1 is a C1-C30 organic group or a substituent of formulae (II), (II?) or (III); R3 and R4 each represent hydrogen, a C1-C30 organic group, or a group of formulae (II), (II?) or (III), provided that, when Y1 is a group of formula (III), R3 is hydrogen, a C1-C30 organic group, or a group of formulae (II), (II?) or (III), and when Y1 is a C1-C30 organic group or a group of formulae (II) or (II?), R3 is a group of formulae (II), (II?) or (III); M is Fe, Co, Ni, Ti, Cu, Zn, Zr, Cr, Mo, Os, Mn, Ru, Sn, Pd, Rh, Pt, or Ir; Anq? is a q-valent anion, p is a number necessary to neutralize an electric charge; and q is 1 or 2.

Abstract: There are disclosed an improved method for production of a polarizing glass having a high extinction ratio by facilitating control of the diameter of silver halide particles in a mother glass with high Ag concentration, and a polarizing glass produced by the method. The glass is a polarizing glass having dispersed and oriented geometrically anisotropic metallic silver particles at least in its surface layer, which is characterized by not containing TiO2 exceeding 1.7 wt % but containing not less than 0.4 wt % Ag, and in that Ag and halogens contained therein satisfy the following relations: the molar ratio of Ag/(Cl+Br) is 0.2 to 1.0; the molar ratio of Cl/(Cl+Br+F) 0.5 to 0.95; and the molar ratio of Br/(Cl+Br+F) 0.05 to 0.4. The method for production comprises the steps of drawing a glass containing dispersed AgClxBr1-x crystals, and then reducing it under a reducing atmosphere.

Abstract: A photoelectric conversion device capable of improving conversion efficiency is provided. The photoelectric conversion device includes a work electrode, an opposed electrode, and an electrolyte-containing layer. In the work electrode, a metal oxide semiconductor layer supporting a dye is provided. The dye contains a cyanine compound that has a methine chain, an indolenine skeleton bonded with both ends of the methine chain, and anchor groups introduced to a nitrogen atom included in the indolenine skeleton. Electron injection efficiency to the metal oxide semiconductor layer is improved, and the dye is hardly exfoliated from the metal oxide semiconductor layer.

Abstract: A novel indolium compound of general formula (I) and an optical recording material containing the indolium compound. In formula (I), ring A is a benzene ring, etc.; ring B is a 5- or 6-membered heterocyclic ring; R1 is a group of general formula (II), etc.; R2 is an organic group having 1 to 30 carbon atoms, etc.; Y1 is an alkyl group having 1 to 10 carbon atoms, etc.; Z1 and Z2 are each, e.g., an alkyl group having 1 to 8 carbon atoms optionally substituted with a halogen atom and optionally interrupted by —O—, etc.; a is an integer of 0 to 6; b is an integer of 0 to 5; Anq? is a q-valent anion; q is 1 or 2; and p is a number necessary to neutralize an electric charge.

Abstract: A novel indolium compound of general formula (I) and an optical recording material containing the indolium compound. In general formula (I), ring A is a benzene ring, etc.; R1 is a group of general formula (II), etc.; R2 is a C1-C30 organic group, etc.; Y1 is a C1-C10 alkyl group, etc.; Z1 is, e.g., a C1-C8 alkyl group optionally substituted with a halogen group and optionally interrupted by —O—, etc.; Z2 is, e.g., a C1-C8 alkyl group optionally substituted with a halogen group and optionally interrupted by —O—, etc.; a is an integer of 0 to 6; b is an integer of 0 to 5; Anq- is a q-valent anion; q is 1 or 2; and p is a number necessary to neutralize an electric charge.

Abstract: Cyanine compounds represented by the general formula (I) which exhibit decomposition behavior suitable for the optical recording material to be used in optical recording layers of optical recording media for high-speed recording: (I) wherein A and B are each an optionally substituted benzene or naphthalene ring; X is O, S, Se, CR3R4, or NY; at least either of R1 and R2 is a group represented by the general formula (II) or (III) and when only either is a group represented thereby, the other is an organic group having 1 to 30 carbon atoms; R3 and R4 are each an organic group having 1 to 30 carbon atoms; Y is hydrogen or an organic group having 1 to 30 carbon atoms; at least either of Y1 and Y2 is a group represented by the general formula (IV) and when only either is a group represented thereby, the other is hydrogen or an organic group having 1 to 30 carbon atoms; Z is hydrogen, halogeno, or cyano; Anm? is an m-valent anion; m is an integer of 1 or 2; and p is a coefficient capable of keeping the electric char

Abstract: The indolium compounds of the present invention are represented by general formula (I) below and exhibit thermal decomposition behavior further suitable for optical recording materials used in an optical recording layer of an optical recording medium for high-speed recording.

Abstract: An optical recording material for use in an optical recording layer of an optical recording medium comprising the optical recording layer provided on a substrate, the optical recording material comprising a cyanine compound represented by general formula (I): wherein rings A and B each represent a substituted or unsubstituted benzene or naphthalene ring; X represents O, S, Se, CR3R4 or NY; one of R1 and R2 represents a specific group of formula (II) or (III), with the other representing a C1 to C30 organic group; R3 and R4 each represent a C1 to C30 organic group; Y, Y1, and Y2 each represent a hydrogen atom or a C1 to C30 organic group; Z represents a hydrogen atom, a halogen atom or a cyano group; Anm?1 represents an m-valent anion; m represents an integer of 1 or 2; and p represents a coefficient maintaining charge neutrality.

Abstract: The cyanine compound of the present invention is represented by general formula (I) below and suitable as an optical recording material used in a recording layer of optical recording media on which recording and play-back are conducted with laser beam. The cyanine compound of the present invention particularly exhibits appropriate thermal decomposition behavior to attain sensitivity compatible with high-speed recording.