Yellow fluorescent dye and preparation method and application thereof
Technical Field
The invention relates to a fluorescent dye, in particular to a yellow fluorescent dye and a preparation method and application thereof.
Background
The fluorescent dye is a dye and can be applied to the industries of textile, printing and dyeing and the like. Because of the fluorescent characteristic, the fluorescent material can be applied to the fields of anti-counterfeiting, decoration, model construction and the like. The nano-level fluorescent dye has small dye particles, is easy to enter the tissue of a dyed object, and has the advantages of good dispersibility, uniform color and the like, thereby having wide application prospect.
The existing fluorescent dye is unstable, easy to decompose and has no long-acting property; the synthesis method, the purification method and the preservation method are very complicated and inconvenient.
201810276697.3 discloses a fluorescent dye, which uses 4-amino-3, 6-disulfo-1, 8-naphthaldehyde dipotassium salt and 0.6mol p-phenylenediamine, and has bad smell because of sulfur element contained in the synthetic raw materials. 201810694947.5 discloses a "fluorescent dye" whose raw material uses a fluorescent agent to generate fluorescence, the particles being larger. Firstly, the fluorescent dye does not belong to the nanometer level and does not have the properties of a plurality of nanometer materials; secondly, the raw materials contain sulfur element, and waste gas is generated; again, the fluorescent dyes synthesized are weak in fluorescence intensity and do not persist.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a yellow fluorescent dye and a preparation method and application thereof. The synthesized carbon quantum dot solution is bright yellow and presents strong yellow light under an ultraviolet lamp, and the synthesized fluorescence is hardly attenuated to form long-acting fluorescence.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a yellow fluorescent dye comprises the following raw materials in parts by weight: 2-10 parts of ethylene diamine tetraacetic acid, 10-30 parts of ethylenediamine and 1-5 parts of 1, 2-pyridylazo 2-naphthol;
the method specifically comprises the following steps:
(1) adding water into the raw materials, and uniformly mixing by ultrasonic;
(2) putting the raw material liquid into a stainless steel reaction kettle, heating to 180-220 ℃, and reacting for 4 hours;
(3) putting the reacted liquid mixture into a dialysis bag for dialysis, and dialyzing for 2-4 h;
(4) concentrating the mixed liquid by using a rotary evaporator, wherein the rotary evaporation temperature is 55-65 ℃;
(5) putting the mixed liquid into an ultra-low temperature refrigerator, and freezing for 24-48 h;
(6) and (4) putting the frozen mixed material into a freeze dryer, and freeze-drying to obtain the yellow fluorescent nano material solid.
The preparation method of the fluorescent anti-counterfeiting ink comprises the step of preparing the prepared yellow fluorescent dye into dye liquid with the concentration of 0.1-5%, namely the fluorescent anti-counterfeiting ink.
A preparation method of a fluorescent textile fabric comprises the steps of preparing a dye solution with the dye concentration of 0.1-5% from the prepared yellow fluorescent dye, and soaking the textile fabric in the dye solution for 12-24 hours to obtain the dyed fluorescent textile fabric.
A preparation method of nano fluorescent powder comprises the steps of mixing powdery yellow fluorescent dye and activated clay according to the mixing ratio of 1: 1-1: 5, and preparing a clay model with fluorescence.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention has heterocyclic ring (pyridine) and raw materials with complex structures such as benzene ring (naphthol), and uses strong alkaline reagent to destroy pyridine ring and naphthol ring, so that a very stable structure is formed at high temperature, which is beneficial to forming long-acting fluorescence. The above-mentioned fluorescence is a fluorescence observed only when irradiated under an ultraviolet lamp.
(2) The method is very simple and convenient no matter a synthesis method, a purification method or a preservation method.
(3) According to the characteristics of the fluorescent dye, the method breaks the routine, performs a series of applications, and provides a template for breakthrough practical application of the yellow fluorescent dye.
The carbon quantum dot solution synthesized by the method is bright yellow, and strong yellow light is presented under an ultraviolet lamp, and the synthesized fluorescence is hardly attenuated, so that long-acting fluorescence is formed.
Drawings
FIG. 1 is a diagram of the state of the fluorescent lamp of the yellow fluorescent dye of the present invention;
FIG. 2 is a diagram of the yellow fluorescent dye of the present invention under a UV lamp;
FIG. 3 is a graph of the ultraviolet, excitation, and emission spectra of the yellow fluorescent dye of the present invention;
FIG. 4 is a diagram of a bird of the present invention in a daylight lamp position, depicted on paper;
FIG. 5 is a view of a bird of the present invention drawn on paper under an ultraviolet lamp;
FIG. 6 is a state diagram of a school badge drawn on the paper of the present invention under a fluorescent lamp;
FIG. 7 is a view of a school badge drawn on the paper of the present invention under an ultraviolet lamp;
FIG. 8 is a state diagram of the present invention under daylight lamp with numbers written on the coin;
FIG. 9 is a view of the present invention showing the writing of numbers on a coin under a UV lamp;
FIG. 10 is a comparison of dyed fabric using the present invention and undyed fabric without the present invention under fluorescent light;
FIG. 11 is a graph comparing the use of the present invention to dye a fabric with the absence of the present invention under a UV lamp;
FIG. 12 is a state diagram of a fluorescent lamp with an artwork made using the present invention;
fig. 13 is a view of an artwork made using the present invention under a uv lamp.
Detailed Description
The following further illustrates embodiments of the invention, but is not intended to limit the scope thereof:
a yellow fluorescent dye comprises the following raw materials in parts by weight: 0.2 to 1g of ethylenediaminetetraacetic acid, 1 to 3ml of ethylenediamine, and 0.01 to 0.05g of 1, 2-pyridylazo 2-naphthol.
A preparation method of yellow fluorescent dye specifically comprises the following steps:
(1) adding water into the raw materials, fixing the volume to 20ml, and uniformly mixing by ultrasonic;
(2) putting the raw material liquid into a stainless steel reaction kettle, heating to 180-220 ℃, and reacting for 4 hours;
(3) putting the reacted liquid mixture into a dialysis bag for dialysis, and dialyzing for 2-4 h;
(4) concentrating the mixed liquid by using a rotary evaporator, wherein the rotary evaporation temperature is 55-65 ℃;
(5) putting the mixed liquid into an ultra-low temperature refrigerator, and freezing for 24-48 h;
(6) and (4) putting the frozen mixed material into a freeze dryer, and freeze-drying to obtain the yellow fluorescent nano material solid.
Fig. 1 is a state diagram of a yellow fluorescent dye under a fluorescent lamp, fig. 2 is a state diagram of the yellow fluorescent dye under an ultraviolet lamp, and fig. 3 is a spectrum diagram of the yellow fluorescent dye. Therefore, the carbon quantum dot solution synthesized by the method has bright yellow color and strong yellow light under an ultraviolet lamp.
Example 1:
a yellow fluorescent dye has the following applications:
fluorescent anti-fake ink
The prepared yellow fluorescent nano fluorescent dye is prepared into a solution with the dye concentration of 0.1-5%, and a pen refill is used for absorbing dye liquid, so that writing can be performed on white paper or coins.
As shown in fig. 4-9, fig. 4 is a state diagram of a bird drawn on paper under a fluorescent lamp according to the present invention; FIG. 5 is a view of a bird of the present invention drawn on paper under an ultraviolet lamp; FIG. 6 is a state diagram of a school badge drawn on the paper of the present invention under a fluorescent lamp; FIG. 7 is a view of a school badge drawn on the paper of the present invention under an ultraviolet lamp; FIG. 8 is a state diagram of the present invention under daylight lamp with numbers written on the coin; fig. 9 is a view of the state of the numbers written on the money of the present invention under the ultraviolet lamp.
The prepared yellow fluorescent nano fluorescent dye is prepared into solution, and a pen refill is used for absorbing dye liquid, so that writing and drawing can be performed on white paper or coins. The mark is not clear under sunlight, the identification is difficult, the mark is clear and visible under an ultraviolet lamp and presents strong yellow light, and the synthesized fluorescence is hardly attenuated to form long-acting fluorescence.
Example 2:
a yellow fluorescent dye has the following applications:
application of yellow fluorescent dye in textile
And (3) preparing the prepared yellow nano fluorescent dye into dye liquid with the dye concentration of 0.1-5%, and soaking the textile fabric in the dye liquid for 12-24 hours to obtain the dyed fluorescent textile fabric.
As shown in fig. 10 and 11, fig. 10 is a graph comparing the dyeing on the cloth using the present invention and the non-dyeing under the daylight lamp without using the present invention; FIG. 11 is a graph comparing the dyeing on a cloth using the present invention with the undyed cloth without the present invention under an ultraviolet lamp. The dyed fluorescent textile fabric emits fluorescence under an ultraviolet lamp.
Example 3:
a yellow fluorescent dye has the following applications:
application of nano fluorescent powder
Mixing the powdery nano fluorescent powder with activated clay to prepare the clay model with fluorescence.
As shown in fig. 12 and 13, fig. 12 is a state diagram of a handicraft article manufactured by using the invention under a fluorescent lamp; fig. 13 is a view of an artwork made using the present invention under a uv lamp. The handicraft made by the invention emits fluorescence under an ultraviolet lamp.
The invention has heterocyclic ring (pyridine) and raw materials with complex structures such as benzene ring (naphthol), and uses strong alkaline reagent to destroy pyridine ring and naphthol ring, so that a very stable structure is formed at high temperature, which is beneficial to forming long-acting fluorescence. The above-mentioned fluorescence is a fluorescence observed only when irradiated under an ultraviolet lamp.
The method is very simple and convenient no matter a synthesis method, a purification method or a preservation method.
According to the characteristics of the fluorescent dye, the method breaks the routine, performs a series of applications, and provides a template for breakthrough practical application of the yellow fluorescent dye.
The carbon quantum dot solution synthesized by the method is bright yellow, and strong yellow light is presented under an ultraviolet lamp, and the synthesized fluorescence is hardly attenuated, so that long-acting fluorescence is formed. And the method is very simple and convenient no matter a synthesis method, a purification method or a preservation method.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.