Optical recording medium using a polymethine dye

An optical recording medium comprising a substrate and a recording layer on said substrate, said recording layer containing an organic coloring matter expressed by the following formula (II):

• ##STR154## wherein X.sup..crclbar. indicates an anion residue;
• m indicates 0, 1 or 2;
• and R'.sub.0 through R'.sub.3 are atoms forming combinations of R'.sub.0 and R'.sub.1, and R'.sub.2 and R'.sub.3 at least one of which forms, with a nitrogen atoms, a fluorine-containing substituted or unsubstituted pyrrolidine ring, a fluorine-containing substituted or unsubstituted piperidine ring, a fluorine-containing substituted or unsubstituted morpholine ring, a fluorine-containing substituted or unsubstituted tetrahydropyridine ring, a fluorine-containing substituted or unsubstituted cyclohexylamine ring expressed by the formula:
• ##STR155## and the other substituents each being a hydrogen atom or a monovalent organic residue;
• and R'.sub.4 and R'.sub.5 each indicate a hydrogen atom or a monovalent organic residue, wherein said pyrrolidine ring is substituted with a methyl group in which at least one of the hydrogen atoms is substituted with a fluorine atom, wherein said piperidine ring is substituted with a methyl group in which at least one of the hydrogen atoms is substituted with a fluorine group;
• wherein said morpholine ring is substituted with a methyl group in which at least one of the hydrogen atoms is substituted with a fluorine atom, wherein said tetrahydropyridine ring is substituted with a fluorine atom, and when said cyclohexamine ring is substituted by a methyl group in which at least one of the hydrogen atoms is substituted with a fluorine atom.

A method of producing an optical recording medium comprising a substrate and a recording layer on said substrate, said recording layer containing an organic coloring matter, said method comprising the step of forming said recording layer on a substrate by coating a coating solution containing said organic coloring matter expressed by the following formula (II) on said substrate ##STR159## wherein X.sup..crclbar. indicates an anion residue;

• m indicates 0, 1 or 2;
• and R'.sub.0 and R'.sub.3 are atoms forming combinations of R'.sub.0 and R'.sub.1, and R'.sub.2 and R'.sub.3 at least one of which forms, with a nitrogen atom, a fluorine-containing substituted or unsubstituted pyrrolidine ring, a fluorine-containing substituted or unsubstituted piperidine ring, a fluorine-containing substituted or unsubstituted morpholine ring, a fluorine-containing substituted or unsubstituted tetrahydropyridine ring, a fluorine-containing substituted or unsubstituted cyclohexylamine ring expressed by the formula:
• ##STR160## and the other substituents each being a hydrogen atom or a monovalent organic residue;
• and R'.sub.4 and R'.sub.5 each indicate a hydrogen atom or a monovalent organic residue, wherein said pyrrolidine ring is substituted with a methyl group in which at least one of the hydrogen atoms is substituted with a fluorine atom, wherein said piperidine ring is substituted with a methyl group in which at least one of the hydrogen atoms is substituted with a fluorine group;
• wherein said morpholine ring is substituted with a methyl group in which at least one of the hydrogen atoms is substituted with a fluorine atom, wherein said tetrahydropyridine ring is substituted with a fluorine atom, and when said cyclohexamine ring is substituted by a methyl group in which at least one of the hydrogen atoms is substituted with a fluorine atom.

An optical recording medium comprising a substrate and a recording layer on said substrate, said recording layer containing an organic coloring matter expressed by the following formula (I):

• ##STR161## wherein R.sub.0 through R.sub.5 each indicate a hydrogen atom or an monovalent organic residue, wherein at least one of R.sub.4 and R.sub.5 is a monovalent organic residue and at least one of R.sub.0 through R.sub.3 is a fluorine-containing monovalent organic residue;
• m indicates 0, 1 or 2;
• and X.sup..crclbar. indicates an anion residue, and wherein the number of fluorine atoms of said fluorine monovalent organic residue is 0.17 n to 3 n relative to the number n of carbon atoms thereof, wherein said fluorine-containing monovalent organic residue is a fluorine-containing substituted or unsubstituted alkyl group, wherein said unsubstituted alkyl group includes fluoromethyl, difluoromethyl, trifluoromethyl, 1-fluoroethyl, 2-fluoroethyl, 1,1-difluoroethyl, 1,2-difluoroethyl, 2,2-difluoroethyl, 1,1,1-trifluoroethyl, 1,1,2-trifluoroethyl, 1,2,2-trifluoroethyl, 1,1,2,2-tetrafluoroethyl, 1,1,1,2-tetrafluoroethyl, pentafluoroethyl, 1-fluoropropyl, 2-fluoropropyl, 3-fluoropropyl, 1,1-difluoropropyl, 1,2-difluoropropyl, 1,3-difluoropropyl, 2,2-difluoropropyl, 2,3-difluoropropyl, 3,3-difluoropropyl, 1,1,2-trifluoropropyl, 1,1,3-trifluoropropyl, 1,2,2-trifluoropropyl, 1,2,3-trifluoropropyl, 1,3,3-trifluoropropyl, 2,2,3-trifluoropropyl, 3,3,3-trifluoropropyl, 1,1,2,2-tetrafluoropropyl, 1,1,3,3-tetrafluoropropyl, 1,1,2,3-tetrafluoropropyl 1,2,2,3-tetrafluoropropyl, 1,2,3,3-tetrafluoropropyl, 2,2,3,3-tetrafluoropropyl, 1,3,3,3-tetrafluoropropyl 2,3,3,3-tetrafluoropropyl, 1,1,2,2,3-pentafluoropropyl 1,1,2,3,3-pentafluoropropyl, 1,1,3,3,3-pentafluoropropyl, 1,2,2,3,3-pentafluoropropyl, 1,2,3,3,3-pentafluoropropyl, 2,2,3,3,3-pentafluoropropyl, 1,1,2,2,3,3-hexafluoropropyl, 1,1,2,3,3,3-hexafluoropropyl, 1,2,2,3,3,3hexafluoropropyl, heptafluoropropyl, 1,1,1,3,3,3-hexafluoro-2-propyl, heptafluoro-2-propyl, 2,2-difluorobutyl, 2,2,3,3-tetrafluorobutyl, 4,4,4-trifluorobutyl, 3,3,4,4,4-pentafluorobutyl, 2,2,4,4,4-pentafluorobutyl, 2,2,3,4,4,4-hexafluorobutyl, 1,2,3,4-tetrafluorobutyl, nonafluorobutyl, 2,2,3,3,4,4,4-heptafluoro-2-butyl, t-nonafluorobutyl, 5,5,5-trifluoropentyl, 4,4,5,5,5-pentafluoropentyl, 3,3,5,5,5-pentafluoropentyl, 3,3,4,4-tetrafluoropentyl, 1,2,3,4,5-pentafluoropentyl, 2,2,3,3,4,4,5,5-octafluoropentyl, 6,6,6-trifluorohexyl, 6,6,7,7,7-pentafluoropentyl, 8,8,8-trifluorooctyl, and 5,5,6,6,7,7,8,8-octafluorooctyl groups, and
• wherein said fluorine-containing substituted alkyl groups include fluorine-containing hydroxyalkyl groups selected form the group consisting of 2-hydroxy-2-fluoroethyl, 2-hydroxy-1,1-difluoroethyl, and 3-hydroxy-2,2-difluoropropyl groups;
• fluorine-containing acetoxyalkyl groups selected form the group consisting of 2-acetoxy-2-fluoroethyl, 2-acetoxy-2,2-difluoroethyl, and 3-acetoxy-2,2,3,3-tetrafluoropropyl groups;
• fluorine-containing carboxyalkyl groups selected from the groups consisting of 2-carboxy-1,2-difluoroethyl, carboxy-3-fluoropropyl, and 4-carboxy-2,2-difluorobutyl groups;
• fluorine-containing alkoxyalkyl groups selected form the group consisting of trifluoromethoxymethyl, trifluoromethyoxyethyl, trifluoromethoxy-2-difluoroethyl, difluoromethoxyethyl, 2-trifluoroethoxy-2'-difluoroethyl, trifluoromethoxy-n-propyl, pentafluoroethoxyethyl, pentafluoroethoxypropyl, methoxy-3,3-difluoropropyl, and trifluoromethoxyaotyl groups.

An optical recording medium comprising a substrate and a recording layer on said substrate, said recording layer containing an organic coloring matter expressed by the following formula (I):

• ##STR162## wherein R.sub.0 through R.sub.5 each indicate a hydrogen atom or an monovalent organic residue, wherein at least one of R.sub.4 and R.sub.5 is a monovalent organic residue and at least one of R.sub.0 through R.sub.3 is a fluorine-containing monovalent organic residue;
• m indicates 0, 1 or 2;
• and X.sup..crclbar. indicates an anion residue, and wherein the number of fluorine atoms of said fluorine monovalent organic residue is 0.17 n to 3 n relative to the number n of carbon atoms thereof, and
• wherein at least one of R.sub.4 and R.sub.5 is an amino-substituted aryl group expressed by the following formula (III):
• ##STR163## wherein R.sub.6 and R.sub.7 are each a hydrogen atom or a monovalent organic residue, and at least one of R.sub.6 and R.sub.7 is a fluorine-containing methyl or ethyl group.