Cyanine dye

The objective of the present invention is to provide organic dye compounds which are useful in optical recording media and have a fluorine-containing anion as the counter ion and excellent solubility. Indolenine-based pentamethine cyanine dyes are represented by the general formula (1) (wherein R1 i...

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Bibliographic Details
Main Authors KAWATA, TOSHIO, YASUI, SHIGEO, HOHSAKA, AYAKO
Format Patent
LanguageEnglish
Published 11.05.2006
Edition7
Subjects
ADHESIVES
CHEMISTRY
COLOUR PRINTING
DYES
HETEROCYCLIC COMPOUNDS
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
LAKES
LINING MACHINES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC CHEMISTRY
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
PERFORMING OPERATIONS
PHYSICS
POLISHES
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:The objective of the present invention is to provide organic dye compounds which are useful in optical recording media and have a fluorine-containing anion as the counter ion and excellent solubility. Indolenine-based pentamethine cyanine dyes are represented by the general formula (1) (wherein R1 is a methyl group or an ethyl group; R2 is a linear or branched alkyl group which is different from R1; R3 is H, a halogen group or a lower alkyl group; and X- is an anion comprising F and a metallic element of group 15 of the periodic table), and a light absorber and an optical recording medium contain the cyanine dye. Further, a method of preparing the cyanine dyes comprises reacting a compound having a 3,3-dimethyl-2-(1,3-butadienyl)-3H-benzoindolenium skeleton with a compound having a 2,3,3-trimethyl-3H-benzoindolenium skeleton.
Bibliography:Application Number: TW20000107392