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Azo-dye as light storage medium and its synthesis

An optical storage medium, azo dye technology, applied in the direction of azo dyes, monoazo dyes, recording/reproducing by optical methods, etc. The effect of good efficiency, easy control of reaction conditions and good stability

Inactive Publication Date: 2011-08-31
上海拓引数码技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of such dyes in organic solvents is not ideal at present, and cannot meet the requirements for making optical discs by spin coating.

Method used

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  • Azo-dye as light storage medium and its synthesis
  • Azo-dye as light storage medium and its synthesis
  • Azo-dye as light storage medium and its synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, target compound:

[0017]

[0018] resolve resolution:

[0019] 1.28 g of 2-amino-5-formylthiazole was dissolved in 20 ml of 85% concentrated phosphoric acid, cooled to 0-5°C in an ice bath, and then 0.76 g of solid sodium nitrite was added thereto to obtain a diazotization solution.

[0020] Dissolve 1.80g of N,N-diethyl-o-toluidine, 3g of sodium acetate, and 0.3g of urea in 30ml of methanol, cool down in an ice bath to 0-5°C, add the above diazotization solution dropwise, and keep the temperature for 3h. Filter and dry:

[0021]

[0022] Dissolve 1.61g of the above-mentioned product and 0.62g of 1,3-cyclohexanedione in 60ml of absolute ethanol, add a catalyst, heat to reflux, and detect that the end point of the reaction is reached, then cool, and solids are precipitated, filtered and washed three times with ice ethanol, Recrystallize from absolute ethanol, recrystallize again after column chromatography, and obtain the pure dye that conforms to ...

Embodiment 2

[0027] Embodiment 2: target compound:

[0028]

[0029] resolve resolution:

[0030] 1.28 g of 2-amino-5-formyl thiazole was dissolved in 20 mL of 85% concentrated phosphoric acid, cooled to 0-5°C in an ice bath, and then 0.76 g of solid sodium nitrite was added thereto to obtain a diazotization solution.

[0031] Dissolve 1.80g of N,N-diethyl-m-hydroxyaniline, 3g of sodium acetate, and 0.3g of urea in 30ml of methanol, cool down in an ice bath to 0-5°C, add the above diazotization solution dropwise, and keep the temperature for 3h. Filter and dry to get:

[0032]

[0033] Dissolve 1.61g of the above-mentioned product and 0.62g of ethyl 2-ketobutyrate in 60ml of absolute ethanol, add a catalyst, heat to reflux, and detect that the end point of the reaction is reached, then cool, and a solid precipitates out. After filtering, wash with ice ethanol three times. Recrystallize from absolute ethanol, recrystallize again after column chromatography, and obtain the pure dye t...

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Abstract

An azo-dye as optical storage medium and its synthesis are disclosed. Ring A expresses aromatic heterocyclic ring connected with beta-diketo-group, ring B expresses aromatic hydrocarbon ring or aromatic heterocyclic ring connected with one or multiple substituted group. The dye structure contains azo-structure, aromatic heterocyclic structure, conjugate olefin structure or beta-tetraethyldiaminobenzophenone structure. The absorption peak can reach to 530-650nm, it has excellent solubility in propanol tetrafluoride, better thermal and light stabilities and easy control. It can be used as digital disk recording materials.

Description

technical field [0001] The invention relates to an azo dye which has a β-diketone conjugated aromatic heterocycle-azo-aromatic ring structure and can be used as an optical storage medium, and belongs to the technical field of organic dye production. Background technique [0002] With the rapid development of information technology today, data information storage technology has become more and more critical. In the current data information storage technology, people mainly use two kinds of magnetic storage and optical storage. Compared with magnetic storage, optical storage has the advantages of high storage stability (stable to light, heat, and magnetic field), long storage time, and low cost. [0003] For optical storage media, there are three types of magneto-optical recording media, phase-change optical recording media, and organic dye optical recording media. Among these three types of media, organic dye optical recording media are high in sensitivity, easy to process, l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B29/033G11B7/246G11B7/2467
Inventor 郑飞璠王健张永旭杨明生孙满龙
Owner 上海拓引数码技术有限公司
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