Abstract: The present invention provides novel organic compounds, which absorb the light in the ultra violet and the infrared regions, have improved light tolerance and solubility in solvents, and have thermal tolerance suitable for uses to which the organic compounds are applied, and provides uses of the same. The above objects are solved by providing indolenine compounds and methine dyes, which have a bis-indolenine skeleton composed of two indolenine rings linked together at their respective C-3 positions via a divalent linking group, and by providing optical recording media containing the methine dyes.

Abstract: An optical recording medium on which high-density recording and reading of optical information can be conducted by a short-wavelength light such as a blue laser beam is provided. In an optical recording medium comprising at least a substrate and a recording layer thereon that can record or read information by irradiation with light, the recording layer contains an azacyanine dye represented by general formula [I]: wherein R1 and R2 each independently represent a hydrogen atom or an optionally substituted linear or branched alkyl group having one to four carbon atoms; R3 represents a hydrogen atom or a hydrocarbon group; R4 represents a hydrogen atom or a linear or branched alkyl group having one to four carbon atoms; R5 represents an optionally substituted aromatic ring group or an optionally substituted unsaturated heterocyclic group; R4 and R5 may be combined together to form a ring; X? represents a counter anion; and the benzene ring A may be optionally substituted.

Abstract: To provide an optical recording medium on which recording/retrieving of high density optical information is possible by a short wavelength light such as a blue laser. An optical recording medium comprising a substrate and a recording layer capable of recording or retrieving information by irradiation with light, formed on the substrate, wherein the recording layer contains the cyanine dye represented by the following formula (I): wherein each of A1 and B1 which are independent of each other, is an aromatic ring which may have a substituent, provided that at least one aromatic ring of A1 and B1 contains a nitrogen atom; each of R1 and R2 which are independent of each other, is a substituent, provided that R1 and/or R2 may be bonded to other cation; each of X1, X2, X3 and X4 which are independent of one another, is an organic group, provided that a pair of X1 and X2, and/or a pair of X3 and X4, may be mutually bonded to form a cyclic structure; Y1 is a hydrogen atom or an organic group; and Z is an anion.

Abstract: The present invention has an object to widen the range of applicable field of organic compounds to be selected as light absorbing materials in various fields including information recordings, solar energy generations, electric machinery apparatuses, electric communicating apparatuses, optical apparatuses, clothes, building/bedding/decorating products, sanitary and health goods, and agricultural materials, particularly, in the field of optical recording media by providing novel organic materials which absorb short-wavelength visible light, have improved lightfastness and solubility in solvents, and also have heat characteristics depending upon uses to be applied. The object is attained by providing cyanine dyes having a specific structure.

Abstract: The present invention provides novel organic compounds, which absorb the light in the ultra violet and the infrared regions, have improved light tolerance and solubility in solvents, and have thermal tolerance suitable for uses to which the organic compounds are applied, and provides uses of the same. The above objects are solved by providing indolenine compounds and methine dyes, which have a bis-indolenine skeleton composed of two indolenine rings linked together at their respective C-3 positions via a divalent linking group, and by providing optical recording media containing the methine dyes.

Abstract: Disclosed is an agent for inducing receptor potential, which comprises an organic dye compound capable of inducing/evoking receptor potential in response to photostimulation in the optic nerve, wherein the organic dye compound is a polymethine organic dye compound. Also disclosed is a substituent material for the retina comprising the agent.