阅读说明：本技术 一种在可见光全波段发射的荧光染料及其制备方法与应用 (Fluorescent dye capable of emitting in all visible light bands and preparation method and application thereof ) 是由 曾钫 李柴颖 吴水珠 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种在可见光全波段发射的荧光染料及其制备方法与应用。该荧光染料为1-(5-(1,2,2-三苯基乙烯基)噻吩-2-基)丁-3-烯-1-胺。本发明的荧光染料具有固态荧光发射,在可见光全波段400-700nm具有光辐射,可发出较明亮的荧光。该染料适用于织物的着色,可用于纺织、印染等行业,并可利用其可见光全波段400-700nm的荧光特性起警示作用,因此本发明材料具有很好的应用前景。(The invention discloses a fluorescent dye capable of emitting in all visible light bands, and a preparation method and application thereof. The fluorescent dye is 1- (5- (1,2, 2-triphenylethylene) thiophene-2-yl) but-3-alkene-1-amine. The fluorescent dye has solid-state fluorescence emission, has light radiation in the visible light full-wave band of 400-700nm, and can emit brighter fluorescence. The dye is suitable for coloring fabrics, can be used in the industries of textile, printing and dyeing and the like, and can play a warning role by utilizing the fluorescence characteristic of visible light of the visible light of 400-700nm, so that the material has a good application prospect.)

1. A fluorescent dye capable of emitting in the whole visible light band is characterized in that the fluorescent dye is 1- (5- (1,2, 2-triphenylvinyl) thiophene-2-yl) but-3-ene-1-amine and has the following structural formula:

2. the method of claim 1, comprising the steps of:

1) dissolving 5- (1,2, 2-triphenylethylene) thiophene-2-formaldehyde in a mixed solution of methanol and dichloromethane, and standing to obtain a solution 1;

2) adding a methanol solution of ammonia into the solution 1, and standing to obtain a solution 2;

3) adding 2-allyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the solution 2, and standing to obtain a solution 3; and placing the solution 3 at room temperature in a dark place for 12-13 hours, and purifying to obtain the product which is colorless oily liquid 1- (5- (1,2, 2-triphenylethylene) thiophene-2-yl) but-3-ene-1-amine.

3. The method according to claim 2, wherein the molar ratio of 5- (1,2, 2-triphenylvinyl) thiophene-2-carbaldehyde used in the step 1) to ammonia used in the step 2) is 1:10 to 12.

4. The method according to claim 2, wherein the molar ratio of 5- (1,2, 2-triphenylvinyl) thiophene-2-carbaldehyde in step 1) to 2-allyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolane in step 3) is 1: 1.2-1.5.

5. The preparation method of claim 2, wherein the volume ratio of the methanol to the dichloromethane in the step 1) is 4: 1-2.

6. The method according to claim 2, wherein the step 1) is performed by allowing the mixture to stand at-5 to-10 ℃ for 5 to 8 minutes.

7. The method according to claim 2, wherein the standing in step 2) is performed at-5 to-10 ℃ for 30 to 35 minutes.

8. The method according to claim 2, wherein the step 3) is performed by allowing the mixture to stand at-5 to-10 ℃ for 5 to 8 minutes.

9. The method according to any one of claims 2 to 8, wherein the purification is silica gel column chromatography.

10. Use of the fluorescent dye emitting in the whole visible range according to claim 1 for dyeing textiles.

Technical Field

The invention belongs to the technical field of synthesis and preparation of materials, and particularly relates to a fluorescent dye capable of emitting in all visible light bands, and a preparation method and application thereof.

Background

In the textile field, fluorescent dyes are special dyes, and fabrics colored by the dyes can emit fluorescence and play a warning role. With the increasing use of fluorescent textiles year after year, the development of high-quality fluorescent dyes suitable for textile dyeing is becoming increasingly important.

Fluorescent dyes suitable for dyeing fabrics can be mainly classified into three major classes, namely acid, disperse and active fluorescent dyes. The acid fluorescent dye is a fluorescent dye containing water-soluble groups in the structure, and when the dye is used for dyeing, the acid dye ionizes to form anionic groups in a dye bath, and the fabric is colored by Van der Waals force and ionic bonds. However, the ionic bond stability is poor, so that the color fastness of the dyeing of the acid fluorescent dye is low, and a good dyeing effect can be obtained by additionally adding a modifier to perform pretreatment on the fabric. Disperse fluorescent dyes are a class of nonionic dyes with very low water solubility. During dyeing, a dispersing agent is added, and conditions such as high temperature and high pressure are utilized to promote dye molecules to diffuse into the fiber and be fixed on the fabric through van der Waals force and hydrogen bond interaction. The disperse fluorescent dye and the acid fluorescent dye have poor color fastness for dyeing fabrics, and a plurality of modifiers or additives are required to be added in the dyeing process, so the dyeing formula and the process are complex. The reactive fluorescent dye achieves the aim of coloring the fabric in a mode of forming stable covalent bonds with fiber molecules in the fabric, so the color fastness is better. The reactive fluorescent dye is composed of a dye containing a reactive group. Chinese patent CN201810287088.8 discloses a method for preparing a reactive fluorescent dye 2,2' - ((((((1, 4-phenylenebis (azacyclo)) bis (6-chloro-1, 3, 5-triazine-4, 2-diyl)) bis (azacyclo)) bis (4, 1-phenylene)) bis (6-amino-1, 3-dioxa-2, 3-dihydro-1H-benzo [ de ] isoquinoline-5, 8-disulfonic acid group) potassium; the reactive fluorescent dye has high solubility and better dyeing capability on cotton fabrics, but the preparation process is more complicated and the dyeing process is more complicated.

Most of the three types of fluorescent dyes commonly used for dyeing fabrics have the characteristic of aggregation-induced fluorescence quenching, so that the fluorescence intensity is reduced under the solid-state condition, which is not favorable for the dyes to exert the optimal fluorescence performance in the fabrics. At present, the fluorescent dye which simultaneously has all the following excellent characteristics and is suitable for the fabrics does not exist: (1) the fabric has two active groups of amino and double bonds, is easy to be combined with groups on the fabric through covalent bonds, and improves color fastness; and can be directly soaked and dyed, and the operation is simple and convenient. (2) The fluorescent dye can emit bright fluorescence when irradiated by light in a visible light region (400-700 nm). (3) The synthesis is simple. Therefore, a new fluorescent dye with high quality emitting in the whole visible light band, which is suitable for dyeing fabrics, is urgently needed in the field to meet the practical application requirements.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide the fluorescent dye which is suitable for dyeing the fabric and emits in the full-wave band of visible light, and overcomes the defects of the prior material.

The purpose of the invention is realized by the following technical scheme:

a fluorescent dye capable of emitting in the whole visible light band, wherein the fluorescent dye is 1- (5- (1,2, 2-triphenylvinyl) thiophene-2-yl) but-3-ene-1-amine and has the following structural formula:

the preparation method of the fluorescent dye capable of emitting in the whole visible light waveband comprises the following steps:

1) dissolving 5- (1,2, 2-triphenylethylene) thiophene-2-formaldehyde in a mixed solution of methanol and dichloromethane, and standing to obtain a solution 1;

2) adding a methanol solution of ammonia into the solution 1, and standing to obtain a solution 2;

3) adding 2-allyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan into the solution 2, and standing to obtain a solution 3; and placing the solution 3 at room temperature in a dark place for 12-13 hours, and purifying to obtain the product which is colorless oily liquid 1- (5- (1,2, 2-triphenylethylene) thiophene-2-yl) but-3-ene-1-amine.

Preferably, the molar ratio of the 5- (1,2, 2-triphenylvinyl) thiophene-2-formaldehyde in the step 1) to the ammonia in the step 2) is 1: 10-12.

Preferably, the molar ratio of the 5- (1,2, 2-triphenylvinyl) thiophene-2-formaldehyde in the step 1) to the 2-allyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolane in the step 3) is 1: 1.2-1.5.

Preferably, the volume ratio of the methanol to the dichloromethane in the step 1) is 4: 1-2.

Preferably, the standing in the step 1) is placed at the temperature of between-5 and-10 ℃ for 5 to 8 minutes.

Preferably, the standing in the step 2) is carried out at the temperature of-5 to-10 ℃ for 30 to 35 minutes.

Preferably, the standing in the step 3) is placed at the temperature of between-5 and-10 ℃ for 5 to 8 minutes.

Preferably, the purification is silica gel column chromatography.

The fluorescent dye emitting in the whole visible light band is applied to dyeing of fabrics.

The product dye obtained by the invention is 1- (5- (1,2, 2-triphenylethylene) thiophene-2-yl) butyl-3-alkene-1-amine, and the molecular formula is C₂₈H₂₅NS, relative molecular mass 407.17. Colorless oily liquid, water-insoluble, easily soluble in dichloromethane, methanol, tetrahydrofuran, dimethyl sulfoxide and other organic solvents. The compound has good light stability, good chemical stability and no toxicity.

Compared with the prior art, the dye provided by the invention has the following outstanding advantages:

(1) the fluorescent dye has two active groups of amino and double bonds, is easy to combine with groups on fabrics through covalent bonds, and improves color fastness; and can be directly soaked and dyed, and the operation is simple and convenient.

(2) The fluorescent dye provided by the invention has light radiation in the whole wave band (400-700nm) of a visible light region, and can emit bright fluorescence.

(3) The synthesis method is simple and convenient.

Drawings

FIG. 1 is a schematic synthesis scheme of fluorescent dyes emitting in the full band of visible light suitable for dyeing fabrics according to the present invention.

FIG. 2 is a nuclear magnetic hydrogen spectrum of 1- (5- (1,2, 2-triphenylvinyl) thiophen-2-yl) but-3-en-1-amine prepared by the present invention.

FIG. 3 is a graph showing the fluorescence emission of the fluorescent dye emitting in the full band of visible light suitable for dyeing fabric according to the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided in connection with the accompanying drawings and examples, but the invention is not limited thereto. It is noted that the processes described below, if not specifically described in detail, are all realizable or understandable by those skilled in the art with reference to the prior art. The reagents or apparatus used are not indicated to the manufacturer, and are considered to be conventional products available through commercial purchase.

The synthetic route of the dye of the present invention, i.e., the fluorescent compound, is shown in FIG. 1.

Example 1

215mg (0.587mmol) of 5- (1,2, 2-triphenylvinyl) thiophene-2-formaldehyde is placed in a single-neck flask with a stirrer, 8mL of methanol and 2mL of dichloromethane are added for dissolution, and the mixture is kept stand at the temperature of-5 ℃ for 5 minutes to obtain a solution 1; 839. mu.L of a solution of ammonia (5.87mmol) in methanol was added to solution 1 (concentration of a commercially available solution of ammonia in methanol was 7mol/L) and left to stand at 5 ℃ for 30 minutes to give solution 2. 148mg (0.88mmol) of 2-allyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan is added into the solution 2 and is kept stand for 5 minutes at the temperature of minus 5 ℃ to obtain a solution 3; solution 3 was left at room temperature for 12 hours in the dark. Purifying by silica gel column chromatography to obtain the product which is colorless oily liquid 1- (5- (1,2, 2-triphenylethenyl) thiophene-2-yl) but-3-alkene-1-amine.

It is characterized by nuclear magnetic hydrogen spectroscopy:¹h NMR (600MHz, DMSO-d6) δ 7.29-7.25(m,4H),7.19-7.17(d, J ═ 8.2Hz,4H),7.13-7.11(d, J ═ 7.0Hz,2H),7.08-7.01(m,3H),6.93-6.92(d, J ═ 7.5Hz,2H),6.60-6.59(d, J ═ 3.7Hz,1H),6.27-6.26(d, J ═ 3.7Hz,1H),5.68(m,1H), 5.08-4.88 (m,2H),4.62(m,1H),2.35-2.27(m, 2H). The NMR spectrum is shown in FIG. 2.

Example 2

Putting 732mg (2.0mmol) of 5- (1,2, 2-triphenylvinyl) thiophene-2-formaldehyde into a stirred single-neck flask, adding 12mL of methanol and 4.5mL of dichloromethane for dissolving, and standing at-10 ℃ for 8 minutes to obtain a solution 1; 3428. mu.L of ammonia (24mmol) in methanol was added to solution 1 and left to stand at-10 ℃ for 33 minutes to give solution 2. 403mg (2.4mmol) of 2-allyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan are added to the solution 2 and left to stand at-10 ℃ for 8 minutes to obtain a solution 3, and the solution 3 is left to stand at room temperature for 13 hours in the dark. Purifying by silica gel column chromatography to obtain the product which is colorless oily liquid 1- (5- (1,2, 2-triphenylethenyl) thiophene-2-yl) but-3-alkene-1-amine. The characterization of the compound obtained in this example is the same as the characterization result in example 1, and reference can be made to fig. 2.

Example 3

Taking 100mg (0.273mmol) of 5- (1,2, 2-triphenylvinyl) thiophene-2-formaldehyde into a single-neck flask with a stirrer, adding 6mL of methanol and 3mL of dichloromethane for dissolving, and standing at-8 ℃ for 6 minutes to obtain a solution 1; 429. mu.L of ammonia (3.002mmol) in methanol was added to solution 1 and left to stand at-8 ℃ for 35 minutes to give solution 2. 62mg (0.369mmol) of 2-allyl-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan are added to the solution 2 and left to stand at-8 ℃ for 6 minutes to obtain a solution 3, and the solution 3 is left to stand at room temperature for 12.5 hours in the dark. Purifying by silica gel column chromatography to obtain the product which is colorless oily liquid 1- (5- (1,2, 2-triphenylethenyl) thiophene-2-yl) but-3-alkene-1-amine. The characterization of the compound obtained in this example is the same as the characterization result in example 1, and reference can be made to fig. 2.

Example 4

The spectrum test of the 1- (5- (1,2, 2-triphenylvinyl) thiophene-2-yl) but-3-ene-1-amine obtained by the invention comprises the following steps:

4.07mg (0.01mmol) of 1- (5- (1,2, 2-triphenylvinyl) thiophen-2-yl) but-3-en-1-amine was dissolved in 10mL of dimethyl sulfoxide to prepare a mother liquor having a concentration of 1 mM. During the test, an appropriate amount of the mother liquor was diluted with distilled water to a concentration of 10. mu.M, the total amount of the test system was 2mL (containing 1% dimethyl sulfoxide), and the test temperature was 25 ℃. The emission spectrum test result of the fluorescent dye emitting at the full-wave band of visible light, which is suitable for fabric dyeing, is shown in fig. 3, and it can be seen from fig. 3 that the fluorescent emission of the fluorescent dye emitting at the full-wave band of visible light, which is suitable for fabric dyeing, covers the full-wave band of the visible light region of 400-700 nm.

The above examples are preferred embodiments of the present invention, but the present invention is not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.