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Optical recording medium having three-dimensional data graphics and method for making same

A technology for optical recording and three-dimensional data, which is applied in the manufacture of optical record carriers, optical record carriers, data recording, etc. It can solve the problems of forming data pits by coating method, reducing signal/noise, low quantum efficiency, etc., and achieving the best recording sensitivity. and read characteristics, improve the signal and the effect of high storage capacity

Inactive Publication Date: 2008-02-27
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small molecule fluorescent materials used, such as nile blue (nile blue), rhodamine (rhodamine), cyanine (cyanine) dyes, acridine (acridine), phenoxazone (phenoxazone) Such dyes have low quantum efficiency, so it is necessary to further match energy amplification materials to achieve fluorescence that can be detected by signal detectors, resulting in complicated components
In addition, the absorption wavelength of the above-mentioned small molecule fluorescent material is close to red laser (580-650nm), and the stoke shift (the difference between the excitation light wavelength and the absorption light wavelength, stoke shift) is less than 30nm, which is easy to cause crosstalk (crosstalk) phenomenon occurs, greatly reducing signal / noise (S / N)
In addition, since small molecule fluorescent materials are prone to concentration quenching effect at high concentrations, they cannot be directly formed in the data pit by solvent coating, but need to be dispersed in polymers (such as PVB or PMA) The formation of the way makes the process complexity increase and the production cost increase

Method used

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  • Optical recording medium having three-dimensional data graphics and method for making same
  • Optical recording medium having three-dimensional data graphics and method for making same
  • Optical recording medium having three-dimensional data graphics and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Synthesis of Precursor X1

[0106] Get a reaction flask, put 40ml of acetic anhydride, 4g of compound W1 and 3.1ml of bromine (Br 2 ), reacted in an ice bath. Then, after reacting for 30 minutes, the reaction solution was slowly poured into a mixture of 200 ml of water and ethyl acetate (1:1). After multiple extractions, dehydration with magnesium sulfate, filtration and concentration, 6.82 gold solid was obtained with a purity of 80.7% and a yield of 95.2%. The reaction flow is as follows:

[0107]

Embodiment 2

[0109] Synthesis of Precursor X2

[0110] Take a reaction bottle, put 40ml of ethanol, 2g (7.2 mole) of compound W2 and 2.58g (14.4 mole) of n-bromosuccinimide (NBS) into the bottle, and react in an ice bath. Then, after reacting for 15 minutes, 1.74g (14.4mmol) of anhydrous magnesium sulfate and 0.74g (6.5mmol) of 3,4-hexanedione (3,4-hexanedione) were added into the reaction flask and reacted for 1 hour. After the reaction was complete, the mixture was extracted with ethyl acetate and water, dehydrated with magnesium sulfate, filtered and concentrated to obtain 1 g of a black solid with a purity of 71% and a yield of 31.1%. The reaction flow is as follows:

[0111]

Embodiment 3

[0113] Synthesis of Precursor Z1

[0114] Get a reaction flask, put 40ml of THF, 2.0g (5.47mmol) of compound Y1, 2.97g (11.7mmol) of compound Y4, 2.15g (21.9mmol) of potassium acetate and 0.045g (5.47×10 -2 mmol) of Pd(dppf)Cl 2 CH 2 Cl 2 (Dichloro[1,1'-bis(diphenylphosphino)ferrocene]palladium(II)dichloromethane adduct), heated to 60°C under nitrogen atmosphere. After reacting for 120 hours, extract with toluene and water (1:1), remove water with magnesium sulfate, filter and concentrate, and decolorize with activated carbon. Afterwards, recrystallization using isopropanol (IPA) gave a yellow solid with a yield of 41%. The reaction flow is as follows:

[0115]

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Abstract

The invention supplies an optical recording medium with three-dimensional data image and its preparation method, which comprises a base plate and complex recoding layer that composes a luminescent material of low degree of polymerization and forms on base plate. For there is high quantum efficiency and Stoke shift for the luminescent material, when use laser light t read the medium, the recording layer will be excited luminescence signal with enough strength. Thereby, the medium of this invention has very fine recording sensitivity and read characteristic without adding signal amplification structure or material.

Description

technical field [0001] The present invention relates to an optical recording medium and its manufacturing method, in particular to an optical recording medium with three-dimensional data graphics and its manufacturing method. Background technique [0002] With the increasing maturity of computer, communication, consumer electronics and other industries, the demand for recording media with high storage capacity, small volume and low manufacturing cost is also increasing, so as to achieve the purpose of mass circulation of information. However, the storage capacity of traditional magnetic recording media is no longer enough, and optical recording media has gradually replaced magnetic recording media and has become the mainstream for storing audio-visual information due to its advantages of large capacity, easy manufacturing process, fast reading, and easy storage. . [0003] In optical recording media, digital data is usually written and identified by utilizing the difference...

Claims

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Application Information

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IPC IPC(8): G11B7/24G11B7/26G11B7/2537G11B7/2538
Inventor 王心心褚文平姚昕宏蔡蕙冰李明家廖文毅
Owner IND TECH RES INST
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