EP0147083A2
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EP
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Photostable cyanine dye and optical recording medium
Assignee: TDK Corp
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Filing: 1984-11-30
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Granted: —
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Expires: 2004-11-30
Abstract
Abstract A photostable cyanine dye possessing a structure represented by the general formula I or II: wherein Φ denotes a monovalent or divalent residue of thiazole ring, oxazole ring, selenazole ring imidazole ring, pyridine ring, indolenine ring, benzoindolenine ring or dibenzoindolenine ring which may have an aromatic ring condensed thereto,Ψ denotes a divalent or monovalent residue of thiazole ring, oxazole ring, selenazole ring, imidazole ring, pyridine ring, indolenine ring, benzoindolenine ring or dibenzoindolenine ring which may have an aromatic ring condensed thereto, L denotes a polymethine connecting group for the formation of a cyanine dye, and Q - denotes an anion represented by the general formula III: wherein M denotes a transition metal atom, R', R 2 , R 3 and R 4 each denote a hydrogen atom, a halogen atom, an alkyl group, or a dialkylamino group and preparation thereof. The invention extends to a method of making such a dye and an optical reocording medium comprising such a photostable cyanine dye.
Inventors
- 👤 Kenryo Namba
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 05:09
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/249; G11B7/2495; C; C09; C09B; C09B23/00; G11B7/246; G11B7/247; G11B7/2472; G11B2007/24612; G11B7/245; G11B7/252; G11B7/253; G11B7/2533; G11B7/2534
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
136 words
A photostable cyanine dye possessing a structure represented by the general formula I or II: wherein Φ/denotes a monovalent or divalent residue of thiazole ring, oxazole ring, selenazole ring, imidazole ring, pyridine ring, indolenine ring, benzoindolenine ring or dibenzoindolenine ring which may have an aromatic ring condensed thereto, ψ denotes a divalent or monovalent residue of thiazole ring, oxazole ring, selenazole ring imidazole ring, pyridine ring, indolenine ring, benzoindolenine ring or dibenzoindolenine ring which may have an aromatic ring condensed thereto, L denotes a polymethine connecting group for the formation of a cyanine dye, and Q denotes an anion represented by the general formula III: wherein M denotes a transition metal atom, R , R 2 , R and R 4 each denote a hydrogen atom, a halogen atom, and alkyl group, or a dialkylamino group.
Claim 2
Dependent Claim
136 words
A photostable cyanine dye possessing a structure represented by the general formula I or II: wherein Φ/denotes a monovalent or divalent residue of thiazole ring, oxazole ring, selenazole ring, imidazole ring, pyridine ring, indolenine ring, benzoindolenine ring or dibenzoindolenine ring which may have an aromatic ring condensed thereto, ψ denotes a divalent or monovalent residue of thiazole ring, oxazole ring, selenazole ring imidazole ring, pyridine ring, indolenine ring, benzoindolenine ring or dibenzoindolenine ring which may have an aromatic ring condensed thereto, L denotes a polymethine connecting group for the formation of a cyanine dye, and Q denotes an anion represented by the general formula III: wherein M denotes a transition metal atom, R , R 2 , R and R 4 each denote a hydrogen atom, a halogen atom, and alkyl group, or a dialkylamino group.
Claim 3
Independent Claim
118 words
A method for the production.of a p hotostable cyanine dye, which comprises causing a cyanine dye possessing a structure represented by the general formula IV or V to react with a quencher represented by the general formula VI in a polar organic solvent, if necessary then adding an aqueous solution to the resultant reaction product thereby inducing double decomposition of said reaction product, and consequently producing a photostable cyanine dye represented by the general formula I or II, and isolating said photostable cyanine dye from the reaction solution. wherein Φ, ψ, 1 L and Q - have the same meanings as defined above, An - denotes an anion, and Cat+ denotes an alkali metal cation or onium cation.
Claim 4
Independent Claim
118 words
A method for the production.of a p hotostable cyanine dye, which comprises causing a cyanine dye possessing a structure represented by the general formula IV or V to react with a quencher represented by the general formula VI in a polar organic solvent, if necessary then adding an aqueous solution to the resultant reaction product thereby inducing double decomposition of said reaction product, and consequently producing a photostable cyanine dye represented by the general formula I or II, and isolating said photostable cyanine dye from the reaction solution. wherein Φ, ψ, 1 L and Q - have the same meanings as defined above, An - denotes an anion, and Cat+ denotes an alkali metal cation or onium cation.
Claim 5
Dependent Claim
32 words
An optical recording medium, produced by forming on a substrate a recording layer containing therein a photostable cyanine dye which is a combination of a cyanine dye cation and a quencher anion.
Claim 6
Dependent Claim
32 words
An optical recording medium, produced by forming on a substrate a recording layer containing therein a photostable cyanine dye which is a combination of a cyanine dye cation and a quencher anion.
Claim 7
Dependent Claim
21 words
An optical recording medium as claimed in Claim 3 in which the photostable cyanine dye is as claimed in Claim 1.
Claim 8
Dependent Claim
25 words
An optical recording medium as claimed in Claim 3 or 4 in which the quencher anion is the anion of a transition metal chelate compound.
Claim 9
Dependent Claim
85 words
A photostable cyanine dye as claimed in Claim 1, 2, 3, 4 or 5 in which Φ + is wherein Z denotes an atomic group required for completion of an indolenine ring, benzoindolenine ring or dibenzoindolenine ring and R 1 denotes a substituted or unsubstituted alkyl, aryl or alkenyl group, and ψ is wherein Z' denotes an aromatic group required for completion of an indolenine ring, benzoindolenine ring or dibenzoindolenine ring and R 1 ' is a substituted or unsubstituted alkyl, aryl or alkenyl group.
Claim 10
Dependent Claim
31 words
A photostable cyanine dye as claimed in any one of the preceding claims in which L is a polymethine connecting group for the formation of a mono-, di-, tri-or tetra-carbocyanine dye.
Claim 11
Dependent Claim
22 words
A photostable cyanine dye as claimed in any one of the preceding claims in which L has 7 or 9 methylene groups.
Claim 12
Dependent Claim
37 words
A photostable cyanine dye as claimed in any one of the preceding claims in which two alkyl groups are bound to the 3-position of the indolenine ring, benzoindolenine ring, or dibenzoindolenine ring completed by Z and Z'.
Claim 13
Dependent Claim
43 words
A photostable cyanine dye as claimed in any one of the preceding claims in which R 1 and R 1 ' are each an alkyl group substituted with hydroxyl group, sulfo group, carboxyl group, alkyloxycarbonyl group, alkylcarbonyloxy group or an unsubstituted alkyl group.
References Cited (Backward Citations)
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