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Preparation of light storage nano compound film and read-write method

A nano-composite and nano-composite material technology, which is applied in the field of preparation and reading and writing of optical storage nano-composite films, can solve the problems of high cost, difficult compound synthesis, performance impact, etc., and achieves reduced synthesis cost, low preparation cost, high sensitivity and Effect of contrast fatigue resistance

Inactive Publication Date: 2009-06-17
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the photochromic part and the fluorescent part in the compound involved in this technology may affect the performance of the two due to covalent linkage. At the same time, the synthesis of such compounds is a major difficulty and the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] At room temperature, the organic photochromic compound fluorine-substituted dibenzothiophene ethylene derivative BTF6 and the green fluorescent dye Schiff base derivative KY are mixed in a methanol solvent at a molar ratio of 2:1, wherein the Schiff base derivative The concentration of substance KY is 1×10 -5 mol / L, the mixed solution was quickly injected into 5mL of water to make an organic nanocomposite.

[0026] The organic nanocomposite material was mixed and uniformly dispersed in a 5% polyvinyl alcohol aqueous solution by ultrasonic stirring at a volume ratio of 1:1 to make an optical storage nanocomposite solution, and then 0.2 mL of the optical storage nanocomposite solution was directly dropped on the Dry on a glass substrate at 40°C to make a rewritable optical storage nanocomposite film with a thickness of 0.2mm.

[0027] The optical storage nanocomposite film prepared according to the above steps is expressed as λ r After being excited by light at 390nm, i...

Embodiment 2

[0032] At room temperature, the organic photochromic compound fluorine-substituted dibenzothiophene ethylene derivative BTF6 and the green fluorescent dye Schiff base derivative KY are mixed in a methanol solvent at a molar ratio of 4:1, wherein the Schiff base derivative The concentration of substance KY is 1×10 -5 mol / L, the mixed solution was quickly injected into 5mL of water to make an organic nanocomposite.

[0033] The organic nanocomposite material was mixed and uniformly dispersed in a 5% polyvinyl alcohol aqueous solution by ultrasonic stirring at a volume ratio of 1:1 to make an optical storage nanocomposite solution, and then 0.3 mL of the optical storage nanocomposite solution was directly dropped on the drying at 40° C. on a glass substrate to obtain a rewritable optical storage nanocomposite film with a thickness of 0.5 mm.

[0034] The light storage nanocomposite film prepared according to the above steps was subjected to ultraviolet light hv 1 Fluorescence i...

Embodiment 3

[0036]At room temperature, the organic photochromic compound fluorine-substituted dibenzothiophene ethylene derivative BTF6 and the green fluorescent dye Schiff base derivative KY are mixed in a methanol solvent at a molar ratio of 10:1, wherein the Schiff base derivative The concentration of substance KY is 1×10 -5 mol / L, the mixed solution was quickly injected into 5mL of water to make an organic nanocomposite.

[0037] The organic nanocomposite material was mixed and uniformly dispersed in a 5% polyvinyl alcohol aqueous solution by ultrasonic stirring at a volume ratio of 1:1 to make an optical storage nanocomposite solution, and then 0.5 mL of the optical storage nanocomposite solution was directly dropped on the drying at 40° C. on a glass substrate to obtain a rewritable optical storage nanocomposite film with a thickness of 0.8 mm.

[0038] The light storage nanocomposite film prepared according to the above steps was subjected to ultraviolet light hv 1 Fluorescence i...

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Abstract

The invention relates to a method for preparing and reading-writing a nano optical storage composite film in the technical field of nano material, which comprises the following steps: using a fluorescent dye and an organic photochromic compound to prepare a nano composite material by a re-precipitation method, evenly dispersing the nano composite material into a high molecular polymer, and pouring or spin-coating nano optical storage composite liquid to prepare the nano erasable optical storage composite film on a clean substrate. The method has the advantages of simple and convenient operation and low implementation cost, and can directly utilize a commercialized fluorescent compound to prepare the nano erasable optical information storage composite film which is simple and convenient and easy to operate.

Description

technical field [0001] The invention relates to a preparation and application method in the technical field of nanomaterials, in particular to a preparation and reading and writing method of an optical storage nanocomposite film. Background technique [0002] With the rapid development of modern science and technology, massive information storage and high-speed information transmission have become the main goals of modern information technology development. Optical switches have attracted widespread attention due to their potential applications in high-density information storage materials. Bistable light-regulated fluorescence emission is considered to be a promising information readout method, not only because fluorescence is easy to identify and has high sensitivity, but also because the excitation of fluorescence requires a small amount of photons, which makes it easier to realize the optical storage of information. Non-destructive readout. To this end, many research g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00G11B7/003
Inventor 盛小海刘洋何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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