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Organic dyestuff and preparation method thereof and recordable optical information recording medium containing organic dyestuff

A technology for recording media and optical information, applied in the field of organic dyes, to achieve the effects of excellent thermal stability, smooth recording and reading, and excellent light resistance

Inactive Publication Date: 2010-05-26
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

[0009] However, the current China Blu-ray High Definition Disc (CBHD) only supports read-only format for duplication of film and television programs, and its information is recorded on the pits pre-engraved on the disc

Method used

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  • Organic dyestuff and preparation method thereof and recordable optical information recording medium containing organic dyestuff
  • Organic dyestuff and preparation method thereof and recordable optical information recording medium containing organic dyestuff
  • Organic dyestuff and preparation method thereof and recordable optical information recording medium containing organic dyestuff

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] The preparation of the compound of chemical formula A-1

[0113] Add an appropriate amount of pyridine to the reaction vessel, respectively add 3.2 g of the compound represented by Chemical Formula 1 and 3.9 g of the compound represented by Chemical Formula 2, heat and reflux for 1 hour, add a large amount of water to the reaction solution, and neutralize the pyridine with hydrochloric acid, After cooling, the precipitated crystals were collected and recrystallized from methanol to obtain 5.6 g of khaki crystals represented by Chemical Formula 3.

[0114] Chemical formula 1:

[0115]

[0116] Chemical formula 2:

[0117]

[0118] Chemical formula 3:

[0119]

[0120] Then, an appropriate amount of acetonitrile was added to the reaction vessel, 0.66 g of the previously obtained compound represented by Chemical Formula 3 and 0.67 g of the azo metal complex represented by Chemical Formula 4 were added, stirred and heated to dissolve the solid, and the acetonitri...

Embodiment 2

[0129] The preparation of the compound of chemical formula A-2

[0130] Add an appropriate amount of acetic anhydride to the reaction vessel, add 2.5 g of the compound represented by Chemical Formula 5 and 3.9 g of the compound represented by Chemical Formula 2, heat, reflux for 4 hours, cool, stir at 0-15 °C for 16 hours, and collect the precipitate The crystallization, recrystallization with methanol, obtains the khaki crystal 4.7g represented by chemical formula 6

[0131] Chemical formula 5:

[0132]

[0133] Chemical formula 2:

[0134]

[0135] Chemical formula 6:

[0136]

[0137] Then, an appropriate amount of acetonitrile was added to the reaction vessel, 0.58 g of the previously obtained compound represented by Chemical Formula 6 and 0.67 g of the azo metal complex represented by Chemical Formula 4 were added, stirred and heated to dissolve the solid, and the acetonitrile was distilled off to obtain The solid was washed with water to obtain 0.82 g of a br...

Embodiment 3

[0146] The preparation of the compound of chemical formula A-3

[0147] Add an appropriate amount of acetonitrile into the reaction vessel, add 0.58 g of the compound represented by the previously obtained chemical formula 6 and 0.68 g of the azo metal complex represented by the chemical formula 7, stir and heat to dissolve the solid, distill off the acetonitrile to obtain the solid water After washing, 0.80 g of a brown solid of the compound represented by Chemical Formula A-3 was obtained.

[0148] chemical formula 7

[0149]

[0150] Chemical formula A-3

[0151]

[0152] Fabrication of Optical Recording Media

[0153] The compound represented by the chemical formula A-3 was dissolved in 100 mL of 2,2,3,3-tetrafluoropropanol per 2 g to prepare a dye coating liquid. The subsequent manufacturing process is the same as that of Chemical Formula A-1, wherein the thickness of the recording layer is 100 nm, and the thickness of the reflective layer is 50 nm.

[0154]The ...

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Abstract

The invention relates to an organic dyestuff of a recordable optical information recording medium, a preparation method thereof and a recordable optical information recording medium containing the organic dyestuff. The general formula of the organic dyestuff is as follows: ring A and ring A' are respectively aromatic ring, aromatic heterocyclic ring or aromatic condensed ring; R1, R2, R4 and R5 respectively represent same or different hydrogen or hydrocarbyl; R3 and R6 respectively represent same or different hydrocarbyl; and X represents azo metal complex anion taking a transition metal as a central atom. The invention has the following effects of absorbing visible light at the short wave length part, having excellent light resistance and solvent dissolubility, excellent thermostability, being suitable for reading for a long time without changing the information recording accuracy, and being suitable for high density recording; the Chinese blue-ray high-definition disc prepared by the dyestuff can smoothly carry out high density recording and reading. The invention also provides the preparation method of the dyestuff and the recordable optical information recording medium containing the dyestuff.

Description

technical field [0001] The invention relates to an organic dye for a recordable optical information recording medium, a preparation method thereof and a recordable optical information recording medium containing the organic dye. Background technique [0002] Hitherto, optical information recording media (optical discs) in which information is recorded once using laser light are known. Such optical discs are called write-once compact discs (so-called CD-Rs), and they have a typical structure in which a recording layer containing an organic dye, made of a metal such as gold A light reflection layer formed, and a protective layer formed of resin. Information recording on the CD-R is performed by irradiating the CD-R with laser light in the near-infrared region (laser light with a wavelength generally around 780 nm). More specifically, the recording layer absorbs the laser light in the irradiated areas and causes a local increase in temperature, whereby the irradiated areas un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B56/16G11B7/24G11B7/2467G11B7/248
Inventor 钟庆华郑飞璠夏芃杨明生孙满龙
Owner 上海拓引数码技术有限公司
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