US 2003/0203148 A1Published application

Indolestyryl compounds and their uses in high-density recording media

AssigneeIndustrial Technology Research Institute

InventorsChien-Liang Huang, Shin-Shin Wang, Wen-Yih Liao, Hui-Ping Tsai, Chuen-Fuw Yan, Chii-Chang Lai, Tzuan-Ren Jeng, Jong-Lieh Yang, Ming-Chia Lee

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Abstract

The invention discloses new indolestyryl compounds and their uses for a high-density optical recording medium. The invention uses the new indolestyryl compounds to form the recording layer of a high-density recording medium. The new indolestyryl compounds are easy to prepare and purify, so they are cheaper when comparing to the compounds generally used in high-density optical recording media. The indolestyryl compounds have a maximum absorption for light wavelengths in the range of 500 nanometers to 700 nanometers. The indolestyryl compounds also have high sensitivity and chemical stability toward light and heat. Using the new indolestyryl compounds to form high-density optical recording media can match up with the short-wavelength laser beam for high-density optical recording media and have the advantage of a stable quality.

Claims27

Dependent claims

An indolestyryl compound, which has the following chemical structure:

15
where R1 is selected from the group consisting of alkyl groups containing one to eight carbons (C1-8), CH2C6H4CO2R6, (CH2)nSO3R7, and (CH2)nCO2R7;
R2 and R3 are selected from the group consisting of hydrogen atoms, alkyl groups containing one to eight carbons (C1-8), alkyl-oxygen groups containing one to eight carbons, alkyl-ester groups (—CO2R8) containing one to eight carbons, and a pyrrolidine ring formed by connecting R2 and R3, a julolidine ring formed by one of R2 and R3 to benzene ring;
R4 and R5 are selected the group consisting of hydrogen atoms, alkyl groups with one to eight carbons (C1-8), trifluoromethyl groups, alkyl-oxygen group, carboxyl groups, nitric groups, amide groups (CONR9R10), sulfonic groups, SO3R11, alkyl-ester groups with one to eight carbons (C1-8), and halide ions (X−);
when the choice of Y− needs to match R1 and R1 is an CH2C6H4CO2R6, (CH2)nSO3R7, and (CH2)nCO2R7, Y− is selected from the group consisting of (TCNQ−)n(teteacyano-p-quinodiiiietlhanie),(TCNE−)n(tetracyanoethylelle)
(n=0, 1), ClO4−, SbF631 , PF6−, BF4 and halide ions;
and
when R1 is an alkyl group containing one to eight carbons, X− is selected from the group consisting of TCNQ− (teteacyano-p-quinodimethane) and TCNE− (tetracyanoethylene).

5 more elements

A high-density recordable optical disc, which comprises:

a first substrate, which is a transparent substrate;
a recording layer, which has an imine salt formed on one surface of the first substrate;
wherein the imine salt has the following chemical structure:
16
where R1 is selected from the group consisting of alkyl groups containing one to eight carbons (C1-8), CH2C6H4CO2R6, (CH2)nSO3R7 and (CH2)nCO2R7;
R2 and R3 are selected from the group consisting of hydrogen atoms, alkyl groups containing one to eight carbons (C1-8), alkyl-oxygen groups containing one to eight carbons, alkyl-ester groups (—CO2R8) containing one to eight carbons, and a pyrrolidine ring formed by connecting R2 and R3, a julolidine ring formed by one of R2 and R3 to benzene ring;
R4 and R5 are selected the group consisting of hydrogen atoms, alkyl groups with one to eight carbons (C1-8), trifluoromethyl groups, alkyl-oxygen group, carboxyl groups, nitric groups, amide groups (CONR9R10), sulfonic groups, SO3R11, alkyl-ester groups with one to eight carbons (C1-8), and halide ions (X−);
when the choice of Y− needs to match R1 and R1 is an CH2C6H4CO2R6, (CH2)nSO3R7, and (CH2)nCO2R7, Y− is selected from the group consisting of (TCNQ−)n(teteacyano-p-quinodimethane),(TCNE−)n
(tetracyanoethylene) (n=0,1), ClO4−, SbF6−, PF6−, BF4 and halide ions;
and
when R1 is an alkyl group containing one to eight carbons, X− is selected from the group consisting of TCNQ− (teteacyano-p-quinodimethane) and TCNE− (tetracyanoethylene);
a reflective layer, which is provided on the recording layer;
a second substrate, which is a transparent substrate;
and
an attachment layer, which is used to connected the reflective layer and the second substrate.

12 more elements

Dependencies are inferred from the claim text.