KR101251331B1 - Polydiacetylene colorimetric transitionpaper and preperation method for the same - Google Patents

Abstract

A polydiacetylene thermochromic paper and a method of manufacturing the same are disclosed. The polydiacetylene thermochromic paper of the present invention comprises the steps of preparing a substrate and a conductive metal mixture paste to be printed (step A); Printing the conductive metal mixture paste on the back side of the substrate to form a conductive metal pattern (step B); Preparing a mixture comprising a diacetylene monomer (step C); Printing a predetermined image by inkjet printing the mixture containing the diacetylene monomer on the front surface of the substrate (step D); And ultraviolet exposure of the entire surface of the substrate on which the image of step D is printed (step E). As a result, the color transition may occur reversibly by heat, bend flexibly, and a polydiacetylene layer may be formed by inkjet printing on a substrate such as paper, thereby simplifying the manufacturing process and reducing costs.

Description

Polydiacetylene thermochromic paper and its manufacturing method {POLYDIACETYLENE COLORIMETRIC TRANSITIONPAPER AND PREPERATION METHOD FOR THE SAME}

The present invention relates to a polydiacetylene thermochromic paper and a method for manufacturing the same, and more particularly, to recognize a change in the external environment and to use a property of a polydiacetylene conjugated polymer accompanied by reversible embolism and fluorescence change. The present invention relates to a thermochromic paper and a manufacturing method thereof.

Polydiacetylene is a polymer of diacetylene monomers. When a double bond and a triple bond are alternately present in the polymer backbone, and when the diacetylene monomers are in close proximity to each other, they may have a crystalline or semi-crystalline structure. It is a conjugated polymer (conjugated polymer) having a characteristic made by irradiating gamma rays.

In general, polydiacetylene dispersed in an aqueous solution or in a thin film form on a solid substrate under optimal conditions has a blue color showing a maximum absorption wavelength at about 650 nm. The blue polydiacetylene thus prepared may be changed into a red solution having a maximum absorption wavelength at about 550 nm by a suitable external environment, for example, heating, pH, or molecular recognition. Due to the color change under these specific conditions, studies are being actively made to use polydiacetylene as a thermochromic display.

An example of manufacturing a conventional polydiacetylene thermochromic display has been reported (Yarimaga et al, Macromolecular Research, 18: 404, 2010), but here the thermochromic is coated with a polydiacetyl-PVA mixed film on a Pyrex glass patterned with a micro heater. Since it is used as a display, the manufacturing process is not only complicated, the display can not be bent flexibly, and above all, the polydiacetylene color transition is irreversible.

SUMMARY OF THE INVENTION An object of the present invention is a thermochromic paper using polydiacetylene, which can be flexibly bent, reversible in color, and can simplify the manufacturing process and reduce costs by introducing inkjet printing in the printing of polydiacetylene, and its It is to provide a manufacturing method.

A method for producing a polydiacetylene thermochromic paper capable of reversible embolism of the present invention for achieving the above object comprises the steps of preparing a substrate and a conductive metal mixture paste to be printed; Printing the conductive metal mixture paste on a rear surface of the substrate to form a conductive metal pattern (step B); Preparing a mixture comprising a diacetylene monomer (step C); Printing a predetermined image by inkjet printing the mixture containing the diacetylene monomer on the front surface of the substrate (step D); And ultraviolet exposure of the entire surface of the substrate on which the image of step D is printed (step E).

The substrate may be a printing paper capable of inkjet printing.

The conductive metal mixture paste may include a paste containing a conductive metal and titanium dioxide (TiO ₂ ) nanoparticles.

The paste containing the conductive metal may include silver (Ag) nanoparticles.

The titanium dioxide nanoparticles may have a diameter of 13 nm to 200 nm.

The method of claim 3, wherein the mixed weight ratio of the paste containing the conductive metal and titanium dioxide may be 1: 1 to 4: 1.

The said B step can be printed by a doctor blade method.

The printing by the doctor blade method may cover the rear surface of the base material, and after blading the metal mixture paste, may be thermally cured for 40 minutes to 120 minutes at a temperature range of 100 to 140 ° C.

The die acetylene monomer has a structure of the following formula.

The diacetylene monomers include 10,12-pentacosadinoic acid, 5,7-eicosadinoic acid, 8,10-heneicosadinoic acid, 4,6-heptadecardinoic acid, and 10,12-tricosadino. Ikic acid, 10,12-docosadiindioic acid, 2- (2-aminoethoxy) ethoxyethyl-10,12-pentacosadinamide and 2- (2-hydroxyethoxy) ethyl-10,12-penta Any one or two or more diacetylene monomers selected from the group consisting of cosdinamides may be mixed and used.

The diacetylene monomer may be 3-pentacosa-10,12-dinamidobenzoic acid.

Step C may be to prepare a mixture of diacetylene monomer, surfactant and water.

The surfactant may be a mixture of one or two or more of the surfactants represented by the following formula.

CH _3- (CH ₂ ) _11- (O CH ₂ CH ₂ ) ₂₃ -OH,

CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₂ -OH,

CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₂₀ -OH,

CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₁₀₀ -OH

The mixing ratio of the diacetylene monomer, surfactant, and water may be 0.3 to 0.5 wt% of diacetylene monomer, 0.3 to 1.5 wt% of surfactant, and 98 to 99.4 wt% of water based on the total weight.

The mixture of the diacetylene monomer, surfactant, and water may further include a water-soluble organic solvent.

The water-soluble organic solvent may be dimethyl sulfoxide or dimethylformamide.

After the step C, it may further comprise the step of dispersing the diacetylene monomer in a solution by sonicating the mixture containing the prepared diacetylene monomer.

The area of the image printed by the inkjet print of step D may include an area where the conductive metal pattern is formed.

The step E may be performed by irradiating the ultraviolet light of 220 to 330nm wavelength for 1 to 10 minutes.

A polydiacetylene thermochromic paper capable of reversible embolism of the present invention for achieving the above object, the substrate is a printing paper; A conductive metal pattern formed on a rear surface of the substrate and printed with a conductive metal mixture paste; And a polydiacetylene printed layer formed by inkjet printing on the entire surface of the substrate and including polydiacetylene.

The conductive metal mixture paste may include silver (Ag) nanoparticles.

The conductive metal pattern may include a power supply unit capable of applying a voltage at both ends.

The polydiacetylene may be formed by polymerization of diacetylene represented by the following formula.

The region of the polydiacetylene printed layer may include a region of the conductive metal pattern.

The base material is flexible and can be bent.

The manufacturing method of the thermochromic flexible display of the present invention for achieving the above object includes the polydiacetylene thermochromic paper manufacturing method.

The thermochromic flexible display of the present invention for achieving the above object includes the polydiacetylene thermochromic paper.

In the polydiacetylene thermochromic paper of the present invention, the color transition may occur reversibly by heat caused by electric current, it may be flexibly bent, and the polydiacetylene layer may be formed on a substrate such as paper by inkjet printing, thereby producing a process. This can simplify the cost and reduce the cost.

1A is a plan view showing the front surface of a polydiacetylene thermochromic paper of the present invention.
FIG. 1B is a rear view illustrating a rear surface of a polydiacetylene thermochromic paper. FIG.
Figure 2 is a photograph showing the color change of the polydiacetylene thermochromic paper appearing when the current supply and current blocking according to Experimental Example 1.

First, the polydiacetylene thermochromic paper of the present invention will be described with reference to the accompanying drawings, and then the polydiacetylene thermochromic paper will be described.

The method for producing a polydiacetylene thermochromic paper of the present invention can be divided into a total of five steps.

The first step is a step (A) of preparing a thermochromic paper substrate and a conductive metal mixture paste to be printed.

In order to form a conductive metal pattern on the back of the substrate, first, a substrate to be applied and a metal mixture paste to be used for printing the conductive metal are prepared.

The substrate can be used as a printing paper capable of inkjet printing, such as plain paper, glossy paper, without limitation, but when the current flows, heat generated from the conductive metal pattern on the back of the substrate can be transferred to the polydiacetylene image printed on the front surface. It is desirable to choose one that has the appropriate thickness and thermal conductivity.

The metal mixture paste refers to a paste containing a metal paste and titanium dioxide (TiO ₂ ) nanoparticles. In this case, the metal paste includes nanoparticles made of metal or metal alloy, and preferably, the diameter of the titanium dioxide nanoparticles is in the range of 13 nm to 200 nm. However, the scope of the present invention is not limited thereto, and titanium dioxide nanoparticles of various sizes may be applied.

The weight ratio of the metal paste and titanium dioxide to be mixed is preferably in the range of 1: 1 to 4: 1.

Here, if the ratio of titanium dioxide is higher than the ratio, there is a problem in that the conductivity of the metal pattern is decreased, and the resistance is increased, thereby increasing the potential value. This increases, and the resistance decreases, so that the temperature causing the color change of the polydiacetylene cannot be obtained.

The second step is a step (B) of forming a conductive metal pattern by printing the metal mixture paste on the back of the substrate.

It is preferable to perform the printing according to the doctor blade method.

At this time, after covering the mask pattern on the back of the substrate, and then uniformly bladed the metal mixture paste thereon, and heat-cured for 40 to 120 minutes on a hot plate heated to 100 to 140 ℃.

However, the scope of the present invention is not limited thereto, and the printing method may apply various methods within the technical scope of the present invention.

The third step is to prepare a mixture comprising the diacetylene monomer (C).

The mixture comprising the diacetylene monomer is a mixture of diacetylene monomer, surfactant and water.

The die acetylene monomer has a structure shown in the formula (1).

[Formula 1]

In Formula 1,

d + g is 0, 1 or 2, e + f is an integer of 2 to 50, e and f are integers of 1 or more,

A or B is the same or different from each other and is any one selected from methyl group, amine group, carboxyl group, hydroxy group, maleimide group, biotin group, N-hydroxysuccinimide group, benzoic acid group and activated ester group.

L ₁ and L ₂ are the same or different from each other, and have at least one selected from an alkyl group, an ethylene oxide group, an amine group, an amide group, an ester group, and a carbonyl group having 2 or more carbon atoms.

As the diacetylene monomer, 10,12-pentacosadiynoic acid represented by the following Chemical Formula 2 (10,12-pentacosadiynoic acid), 5,7-eicosadinoic acid represented by the following Chemical Formula 3 (5,7-eicosadiynoic acid), 8,10-heneicosadiynoic acid represented by the following formula (4), 4,6-heptadecadinoic acid (4,6-heptadecadiynoic acid) represented by the following formula (5), 10,12-tricosadiynoic acid represented by the following Chemical Formula 6, 10,12-docosadiyndioic acid represented by the following Chemical Formula 7, 10,12-docosadiyndioic acid, represented by the following Chemical Formula 8 2- (2-aminoethoxy) ethoxyethyl-10, 12-pentacosadinamide (2- (2-aminoethoxy) ethoxyethyl-10,12-pentacosadiynamide), and 2- (2) represented by the following formula (9): Any one or two selected from the group consisting of-(hydroxyethoxy) ethyl-10,12-pentacosadinamide (2- (2-hydroxyethoxy) ethyl-10,12-pentacosadiynamide) The phases may be mixed.

In addition, 3-pentacosa-10,12-dinamidobenzoic acid represented by the following Chemical Formula 10 may be used alone.

[Formula 2]

CH _3- (CH ₂ ) ₁₁ -C≡CC≡C (CH ₂ ) ₈ -COOH

(3)

CH _3- (CH ₂ ) ₁₁ -C≡CC≡C- (CH ₂ ) ₃ -COOH

[Formula 4]

CH _3- (CH ₂ ) ₉ -C≡CC≡C- (CH ₂ ) ₆ -COOH

[Chemical Formula 5]

CH _3- (CH ₂ ) ₉ -C≡CC≡C- (CH ₂ ) ₂ -COOH

[Formula 6]

CH _3- (CH ₂ ) ₉ -C≡CC≡C- (CH ₂ ) ₈ -COOH

[Formula 7]

COOH- (CH ₂ ) ₈ -C≡CC≡C- (CH ₂ ) ₈ -COOH

[Formula 8]

CH _3- (CH ₂ ) ₁₁ -C≡CC≡C- (CH ₂ ) ₈ -CONH- (CH ₂ ) _2- (O CH ₂ CH ₂ ) ₂ -NH ₂

[Chemical Formula 9]

CH _3- (CH ₂ ) ₁₁ -C≡CC≡C- (CH ₂ ) ₈ -CONH- (CH ₂ ) ₂ -O- (CH ₂ ) ₂ -OH

[Formula 10]

CH _3- (CH ₂ ) ₁₁ -C≡CC≡C- (CH ₂ ) ₈ -CONH-C ₆ H ₄ -COOH

In addition, the surfactant is a surfactant having more hydrophilic groups than hydrophobic groups in the molecule, for example, a surfactant represented by the following formula (11) to (14) can be used alone or in combination.

[Formula 11]

CH _3- (CH ₂ ) _11- (O CH ₂ CH ₂ ) ₂₃ -OH

[Chemical Formula 12]

CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₂ -OH

[Chemical Formula 13]

CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₂₀ -OH

[Formula 14]

CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₁₀₀ -OH

The mixture containing the diacetylene monomer preferably comprises 0.3 to 0.5 wt% of a diacetylene monomer, 0.3 to 1.5 wt% of surfactant, and 98 to 99.4 wt% of water based on the total weight.

When the diacetylene monomer is included in less than 0.3 wt% based on the total weight of the mixture, the low concentration may blur the image. In contrast, when the diacetylene monomer is included in excess of 0.5 wt% based on the total weight of the mixture may not be sufficiently dispersed in water due to the high concentration.

When the surfactant is included in less than 0.3 wt% based on the total weight of the mixture, the diacetylene monomer may not be sufficiently dispersed in water. In contrast, excess surfactant may blur the image if the surfactant is included in excess of 1.5 wt% based on the total weight of the mixture.

When the water is used in less than 98 wt% based on the total weight of the mixture, the content of the diacetylene monomer is relatively increased may not be sufficiently dispersed in the water due to the high concentration of the diacetylene monomer. Alternatively, the content of the surfactant may be increased relatively, resulting in blurring of the image due to the excessive amount of the surfactant. In contrast, when water is included in an amount of more than 99.4 wt% based on the total weight of the mixture, the content of the diacetylene monomer may be relatively reduced, resulting in a blurry image due to the low concentration of the diacetylene monomer, or relatively The content of the surfactant may be reduced, so that the diacetylene monomer may not be sufficiently dispersed in water.

Meanwhile, the mixture of the diacetylene monomer, the surfactant, and water may further include a water-soluble organic solvent.

Dimethyl sulfoxide, dimethylformamide, etc. may be used as the water-soluble organic solvent, and it is preferable to include less than 2 wt% based on the total weight of the mixture.

The method may further include a step (C-1) of dispersing the diacetylene monomer in a solution by sonicating the mixture including the diacetylene monomer prepared in the third step.

Dispersion by the sonication results in a suitable state so that the mixture containing the diacetylene monomer can be printed on the substrate as an ink which can be applied to ink jet printing.

The fourth step is a step (D) of inkjet printing the mixture containing the diacetylene monomer on the entire surface of the substrate, the conductive metal pattern is not formed.

First, a mixture containing the dispersed diacetylene monomer is injected into a cartridge of an ink jet printer.

Subsequently, a predetermined image is inkjet printed on the front surface of the mixture including the die acetylene monomer through the nozzle of the ink jet printer on which the conductive metal pattern of the substrate is not formed. In this case, the size of the inkjet printed image is preferably larger than the conductive metal pattern. In other words, the region of the conductive metal pattern is to be included in the mixture print image including the diacetylene monomer.

Finally, the fifth step is the step (E) of ultraviolet exposure to the entire surface of the substrate, the ink jet-printed mixture containing the diacetylene monomer.

By the ultraviolet exposure treatment, the diacetylene monomer is polymerized into polydiacetylene. As a result, the printed layer containing the blue polydiacetylene is completed.

Here, the conditions of ultraviolet exposure are not particularly limited, but it is preferable to irradiate ultraviolet rays having a wavelength of 220 to 330 nm for 1 to 10 minutes.

Next, the polydiacetylene thermochromic paper of the present invention will be described.

Figure 1a is a plan view showing the front surface of the polydiacetylene thermochromic paper of the present invention, Figure 1b is a rear view showing the appearance of the rear surface of the polydiacetylene thermochromic paper.

1A and 1B, the conductive metal pattern 30 is formed on the rear surface of the substrate 10, and the polydiacetylene printed layer 20 is formed on the front surface of the substrate 10.

In this case, the substrate 10 may apply all of the paper to which inkjet printing may be applied as described in the manufacturing method.

The conductive metal pattern 30 includes a power supply unit 32 for applying a voltage at both ends. In FIG. 2B, the U-shaped pattern is formed, but may be formed in various shapes as necessary.

It is preferable that the poly acetylene print layer 20 includes a printed area including a region where the conductive metal pattern 30 is formed. Accordingly, the blue-die polyacetylene printed layer 20 may transition to red according to the shape of the conductive metal pattern 30 in which current flows to generate heat, thereby forming a shape corresponding to the shape.

The polydiacetylene thermochromic paper of the present invention described above and a method of manufacturing the same may be applied to a thermochromic flexible display and a method of manufacturing the same.

Hereinafter, a preferred embodiment of the polydiacetylene thermochromic paper manufacturing method of the present invention will be described.

First, an Ag paste (ElcoatElectroconductives P-100) composed of nanoparticles having a diameter of 100 nm and TiO _{2 having a} diameter of 20 nm The nanoparticles were mixed in a 2: 1 ratio to prepare a conductive metal mixture paste.

After the mask pattern was covered on the back side of the glossy paper as the substrate, the conductive metal mixture paste was evenly blazed using the doctor blade method.

Thereafter, the prepared pattern was placed on a hot plate heated to 120 ° C., and then thermally cured for 1 hour to form a uniform conductive metal pattern.

Next, 50 mg of 3-pentacosa-10,12-dinamidobenzoic acid (CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₂₀ -OH, trade name Brij78 ^TM ) as a surfactant was 0.2 ml of dimethyl. After dissolving in sulfoxide, 10 ml of water were added and dispersed by sonication for 15 minutes.

The dispersed solution was cooled at 4 ° C. for 4 hours to prepare a mixture of diacetylene monomer, surfactant, and water.

Then, after injecting a mixture of the die acetylene monomer, surfactant and water into the inkjet cartridge, an image was printed on the front surface of the glossy paper using the conductive metal pattern is not formed. The printed image was exposed to ultraviolet rays of 254 nm wavelength for 3 minutes (1 mW / cm ² ) to complete an image containing blue polydiacetylene.

[Experimental Example 1]

Experimental Example 1 is to observe the color transition according to the temperature change of the polydiacetylene thermochromic paper prepared according to Example 1 of the present invention.

Figure 2 is a photograph showing the color change of the polydiacetylene thermochromic paper appearing when the current supply and current blocking according to Experimental Example 1.

According to FIG. 2, when a current is supplied through both ends of the conductive metal pattern by using a power supply, heat is generated due to the resistance of the conductive metal, and the polydiacetylene printed layer is blue to red on the front of the thermochromic paper. It was observed that the pattern having the same shape as the shape of the conductive metal pattern was formed by color transition.

On the other hand, when the current is blocked, no heat is generated in the conductive metal pattern, and as the temperature decreases, the polydiacetylene printed layer turns to the original blue color.

This proves that the polydiacetylene thermochromic paper of the present invention is reversibly embolized. In addition, it was also confirmed that the substrate had flexibility and was bent.

As mentioned above, although the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is possible.

10: base material 20: polydiacetylene printing layer
30: conductive metal pattern 32: power supply

Claims (27)

Preparing a substrate to be printed and a conductive metal mixture paste (step A);
Printing the conductive metal mixture paste on a rear surface of the substrate to form a conductive metal pattern (step B);
Preparing a mixture comprising a diacetylene monomer (step C);
Printing a predetermined image by inkjet printing the mixture containing the diacetylene monomer on the front surface of the substrate (step D); And
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism comprising the step (E step) of ultraviolet exposure of the entire surface of the substrate on which the image of step D is printed.
The method according to claim 1,
The above description,
A method for producing polydiacetylene thermochromic paper capable of reversible embolism, characterized in that it is a printing paper capable of inkjet printing.
The method according to claim 1,
The conductive metal mixture paste,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, comprising a paste containing a conductive metal and titanium dioxide (TiO ₂ ) nanoparticles. The method according to claim 3,
Paste containing the conductive metal,
A method for producing polydiacetylene thermochromic paper capable of reversible embolism, comprising silver (Ag) nanoparticles.
The method according to claim 3,
The titanium dioxide nanoparticles,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized in that the diameter is 13nm to 20nm.
The method according to claim 3,
The mixed weight ratio of the paste containing the conductive metal and titanium dioxide,
Method of producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized in that 1: 1 to 4: 1.
The method according to claim 1,
In the step B,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized by printing by a doctor blade method.
The method of claim 7,
Printing by the doctor blade method,
Covering the mask pattern on the back surface of the substrate, and after blading the metal mixture paste, in the temperature range of 100 to 140 ℃, heat reversible polydiacetylene heat, characterized in that for 40 to 120 minutes Discoloration paper manufacturing method.
The method according to claim 1,
The die acetylene monomer,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized by having a structure of the following formula.

Wherein d + g = 0, 1 or 2, and e + f = an integer from 2 to 50, f and g are integers of 1 or more. Is any one of hydroxy group, maleimide group, biotin group, N-hydroxysuccinimide group, benzoic acid group and activated ester group, L ₁ and L ₂ are the same or different from each other, each having an alkyl group having 2 or more carbon atoms, ethylene At least one selected from an oxide group, an amine group, an amide group, an ester group, and a carbonyl group.)
The method according to claim 1,
The die acetylene monomer,
10,12-pentacosadinoic acid, 5,7-eicosadinoic acid, 8,10-heneicosadinoic acid, 4,6-heptadecadinoic acid, 10,12-tricosadinoic acid, 10,12- Group consisting of docosadiindioic acid, 2- (2-aminoethoxy) ethoxyethyl-10,12-pentacosadinamide and 2- (2-hydroxyethoxy) ethyl-10,12-pentacosadinamide Method for producing a poly acetylene thermochromic paper capable of reversible embolism, characterized in that using any one or two or more diacetylene monomer selected from mixing.
The method according to claim 1,
The die acetylene monomer,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized in that it is 3-pentacosa-10,12-dinamidobenzoic acid.
The method according to claim 1,
The step C,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized by preparing a mixture of a diacetylene monomer, a surfactant, and water.
The method of claim 12,
The surfactant is,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized in that one or two or more of the surfactants represented by the following formulas are mixed.
CH _3- (CH ₂ ) _11- (O CH ₂ CH ₂ ) ₂₃ -OH,
CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₂ -OH,
CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₂₀ -OH,
CH _3- (CH ₂ ) _17- (O CH ₂ CH ₂ ) ₁₀₀ -OH
The method of claim 12,
The mixing ratio of the diacetylene monomer, surfactant and water,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized in that the total weight of the die acetylene monomer 0.3 ~ 0.5 wt%, 0.3 ~ 1.5 wt% surfactant and 98 ~ 99.4 wt% water.
The method of claim 12,
In the mixture of the die acetylene monomer, surfactant and water,
Method for producing a polydiacetylene thermochromic paper capable of reversible embolization, characterized in that it further comprises a water-soluble organic solvent.
The method according to claim 15,
The water-soluble organic solvent,
A method for producing a polydiacetylene thermochromic paper capable of reversible embolism, characterized in that it is dimethyl sulfoxide or dimethylformamide.
The method according to claim 1,
After step C,
And dispersing the diacetylene monomer in a solution by sonicating the mixture containing the prepared diacetylene monomer. A method for preparing reversible embolized polydiacetylene thermochromic paper, the method comprising:
The method according to claim 1,
The area of the image printed by the inkjet print of step D,
Reversible embolism, it characterized in that it comprises a region in which the conductive metal pattern is formed polydiacetylene thermochromic paper manufacturing method.
The method according to claim 1,
The step E,
Method for producing a poly acetylene thermochromic paper capable of reversible embolism, characterized in that performed by irradiating ultraviolet light of 220 to 330nm wavelength for 1 to 10 minutes.
Base material which is printing paper;
A conductive metal pattern formed on a rear surface of the substrate and printed with a conductive metal mixture paste; And
A polydiacetylene thermochromic paper capable of reversible embolism comprising a polydiacetylene print layer formed by inkjet printing on a front surface of the substrate and comprising polydiacetylene.
The method of claim 20,
The conductive metal mixture paste,
A polydiacetylene thermochromic paper capable of reversible embolism, comprising silver (Ag) nanoparticles.
The method of claim 20,
The conductive metal pattern is,
A polydiacetylene thermochromic paper capable of reversible embolism, comprising a power supply unit capable of applying a voltage at both ends.
The method of claim 20,
The polydiacetylene,
A polydiacetylene thermochromic paper capable of reversible embolism, which is formed by polymerization of diacetylene represented by the following formula.

Wherein d + g = 0, 1 or 2, e + f = an integer from 2 to 50, and f and g are integers of 1 or more. Any one of a hydroxy group, a maleimide group, a biotin group, an N-hydroxysuccinimide group, a benzoic acid group and an activated ester group L ₁ and L ₂ are the same as or different from each other, each having an alkyl group having 2 or more carbon atoms, and ethylene oxide At least one selected from a group, an amine group, an amide group, an ester group, and a carbonyl group.)
The method of claim 20,
The area of the polydiacetylene printed layer,
A polydiacetylene thermochromic paper capable of reversible embolism, characterized in that it comprises a region of the conductive metal pattern.
The method of claim 20,
The above description,
A polydiacetylene thermochromic paper capable of reversible embolism, characterized by flexibility and bending.
Preparing a substrate to be printed and a conductive metal mixture paste;
Printing the conductive metal mixture paste on a rear surface of the substrate to form a conductive metal pattern;
Preparing a mixture comprising a diacetylene monomer;
Printing a predetermined image on the front of the substrate by inkjet printing the mixture containing the diacetylene monomer; And
A method of manufacturing a thermochromic flexible display, comprising a method for producing a polydiacetylene thermochromic paper capable of reversible embolism, which comprises performing an ultraviolet exposure process on an entire surface of a substrate on which an image is printed.
Base material which is printing paper;
A conductive metal pattern formed on a rear surface of the substrate and printed with a conductive metal mixture paste; And
A thermochromic flexible display comprising polydiacetylene thermochromic paper capable of reversible embolism comprising a polydiacetylene print layer formed by inkjet printing on a front surface of the substrate and comprising polydiacetylene.

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