阅读说明：本技术 复合发光纤维及其制备方法与应用 (Composite luminescent fiber and preparation method and application thereof ) 是由 蒲雄 万军民 顾星桂 丁文凤 孙江曼 于 2019-08-23 设计创作，主要内容包括：本发明涉及柔性可穿戴发光器件领域,具体涉及一种复合发光纤维及其制备方法与应用。所述复合发光纤维包括聚合物和聚集诱导发光AIE分子,所述聚合物的固化温度为0-300℃。本发明所提供的复合发光纤维,由于纤维中包含在紫外光的激发下具有高度发光性的AIE分子,同时聚合物又具有优异的柔软性和拉伸性,使形成的复合发光纤维不仅具有优异的发光性而且高度可拉伸。(The invention relates to the field of flexible wearable luminescent devices, in particular to a composite luminescent fiber and a preparation method and application thereof. The composite luminescent fiber comprises a polymer and aggregation-induced emission AIE molecules, wherein the curing temperature of the polymer is 0-300 ℃. According to the composite luminescent fiber provided by the invention, as the fiber contains AIE molecules with high luminescence under the excitation of ultraviolet light, and meanwhile, the polymer has excellent flexibility and stretchability, the formed composite luminescent fiber has excellent luminescence and high stretchability.)

1. A composite luminescent fiber, wherein the luminescent composite fiber comprises a polymer and aggregation-inducing luminescent molecules; the curing temperature of the polymer is 0-300 ℃.

2. The composite luminescent fiber according to claim 1, wherein the weight ratio of the polymer to the aggregation-inducing luminescent molecule is (0.5:1000) - (60:1000), preferably (1:1000) - (50:1000), more preferably (5:1000) - (15: 1000);

preferably, the curing temperature of the polymer is 110-250 ℃;

preferably, the polymer is at least one of polydimethylsiloxane, epoxy resin and polyurethane; polydimethylsiloxane is preferred.

3. A method of making the composite luminescent fiber of claim 1 or 2, comprising the steps of:

step 1): adding aggregation-induced emission molecules into a first solvent for dissolving to obtain an aggregation-induced emission molecule solution;

step 2): adding a polymer into a second solvent for dissolving to obtain a polymer solution;

step 3): adding the polymer solution into the aggregation-induced emission molecule solution, and stirring until the polymer solution and the aggregation-induced emission molecule solution are uniformly mixed to obtain a polymer/aggregation-induced emission molecule composite solution;

step 4): carrying out pre-curing treatment on the composite liquid, and cooling to obtain a spinning solution;

step 5): and (3) in spinning equipment, putting the spinning solution into a spinning solidification bath for spinning, washing and drying to obtain the composite luminescent fiber.

4. The method of claim 3, wherein the first and second solvents are each independently selected from at least one of dichloromethane, cyclohexane, phenol, toluene, acetonitrile, chlorobenzene, and methyl acetate.

5. The method according to claim 3 or 4, wherein in step 4), the conditions of the pre-curing treatment comprise: the pre-curing temperature is 40-80 deg.C, preferably 50-70 deg.C, and the pre-curing time is 5-40min, preferably 10-25 min.

6. The method according to any one of claims 3-5, wherein in step 5), the spinning step is in particular: transferring the spinning solution into an extruding device, extruding the spinning solution into an oil bath at the speed of 1-10ml/min, curing and forming, and collecting on a winding shaft at the linear speed of 1-3 m/min;

preferably, the extrusion device is a syringe;

more preferably, the volume of the extrusion device is 50-100 ml;

preferably, the time for curing and forming is 1-10 s.

7. The method according to any of claims 3-6, wherein the temperature of the spinning solidification bath in step 5) is 110-.

8. The method according to any one of claims 3 to 7, wherein in step 5) the washing detergent is deionized water and/or ethanol, preferably deionized water.

9. The method according to any one of claims 3-8, wherein in step 5), the drying conditions comprise: the drying temperature is 40-90 deg.C, preferably 50-70 deg.C, and the drying time is 10-60min, preferably 20-40 min.

10. Use of the composite luminescent fiber according to claim 1 or 2 or the composite luminescent fiber produced by the method according to any one of claims 3 to 9, wherein the use is a flexible wearable device.

Technical Field

The invention relates to the field of flexible wearable luminescent devices, in particular to a composite luminescent fiber and a preparation method and application thereof.

Background

With the advancement of society and technology, flexible wearable devices have received increasing attention. The need for flexible wearable devices has driven the development of related materials and manufacturing techniques. These efforts include the integration of functional materials into textiles or the integration of electronic components into the body fabric to achieve specific functions of energy harvesting and storage, multifunctional sensing, communication and light emitting displays. Innovations in wearable devices have brought about new concepts in apparel. However, most of the research reports are focused on sensors, energy collection and storage, and transistors, and the reports on flexible light emitting devices are few. The intelligent wearable luminous fabric plays an important role in the aspects of traffic, ultraviolet resistance, fashion design, stage performance and the like. In order to obtain the intelligent luminous fabric, one method is to use the fabric as a base fabric, mix the functional material with a binder to form a coating, and obtain the coating through a coating treatment. However, the coating treatment reduces the inherent properties of the textile such as softness, flexibility and breathability, and the coating is also easily removed. Another approach is to use electroluminescent devices. The light emitting principle of the electroluminescent device is to convert electric energy into light energy, and as the electroluminescent device needs to be excited by electric energy, a power supply and a lead are required to be added, so that clothes are heavy, and the comfort performance is reduced.

Therefore, in order to solve the problems in the prior art, it is necessary to provide a flexible luminescent fiber. Aggregation-induced emission (AIE) materials have been known to be discovered in 2001, and in recent years, AIE materials have been widely used in chemical sensing, electroluminescent devices, biological probes, in vivo and in vitro imaging techniques, and the like. However, there is currently no study for preparing luminescent fibers directly using AIE materials.

Disclosure of Invention

The invention aims to solve the problem of how to obtain luminescent fibers by using AIE (aluminum-doped. The composite luminescent fiber has the characteristics of excellent luminescent performance and high stretchability, and the preparation method is simple in process, low in cost, capable of realizing batch production and suitable for flexible wearable equipment.

In order to achieve the above object, a first aspect of the present invention provides a composite luminescent fiber, wherein the luminescent composite fiber comprises a polymer and aggregation-inducing luminescent molecules; the curing temperature of the polymer is 0-300 ℃.

Preferably, the weight ratio of the polymer to the aggregation-inducing luminescent molecule is (0.5:1000) to (60:1000), more preferably (1:1000) to (50:1000), and still more preferably (5:1000) to (15: 1000).

Preferably, the curing temperature of the polymer is 110-.

Preferably, the polymer is at least one of polydimethylsiloxane, epoxy resin and polyurethane; more preferably polydimethylsiloxane.

In a second aspect, the present invention provides a method for preparing the composite luminescent fiber of the present invention, comprising the steps of:

step 1): adding aggregation-induced emission molecules into a first solvent for dissolving to obtain an aggregation-induced emission molecule solution;

step 2): adding a polymer into a second solvent for dissolving to obtain a polymer solution;

step 3): adding the polymer solution into the aggregation-induced emission molecule solution, and stirring until the polymer solution and the aggregation-induced emission molecule solution are uniformly mixed to obtain a polymer/aggregation-induced emission molecule composite solution;

step 4): carrying out pre-curing treatment on the composite liquid, and cooling to obtain a spinning solution;

step 5): and (3) in spinning equipment, putting the spinning solution into a spinning solidification bath for spinning, washing and drying to obtain the composite luminescent fiber.

Preferably, the first solvent and the second solvent are each independently selected from at least one of dichloromethane, cyclohexane, phenol, toluene, acetonitrile, chlorobenzene, and methyl acetate.

Preferably, in step 4), the conditions of the pre-curing treatment include: the pre-curing temperature is 40-80 deg.C, preferably 50-70 deg.C, and the pre-curing time is 5-40min, preferably 10-25 min.

Preferably, in step 5), the spinning step specifically comprises: transferring the spinning solution into an extruding device, extruding the spinning solution into an oil bath at the speed of 1-10ml/min, curing and forming, and collecting on a winding shaft at the linear speed of 1-3 m/min.

Preferably, the extrusion device is a syringe.

More preferably, the volume of the extrusion device is 50-100 ml.

Preferably, the time for curing and forming is 1-10 s.

Preferably, in step 5), the temperature of the spinning solidification bath is 110 ℃ to 240 ℃, preferably 150 ℃ to 200 ℃.

Preferably, in step 5), the washing solvent is deionized water and/or ethanol, and more preferably deionized water.

Preferably, in step 5), the drying conditions include: the drying temperature is 40-90 deg.C, preferably 50-70 deg.C, and the drying time is 10-60min, preferably 20-40 min.

In a third aspect, the invention provides a use of the composite luminescent fiber of the invention or the composite luminescent fiber prepared by the method of the invention, wherein the use is a flexible wearable device.

By the technical scheme, the composite luminescent material and the preparation method and application thereof provided by the invention have the following beneficial effects:

(1) the invention takes Polydimethylsiloxane (PDMS) as a base material, and the fiber prepared by spinning is very soft, has enough elasticity and good luminescence property.

(2) The aggregation-induced emission (AIE) material is widely applied to chemical sensing, electroluminescent devices, biological probes, in-vivo and in-vitro imaging technologies and the like due to good luminescence property.

(3) The extrusion spinning method adopted by the invention has the advantages of simple manufacturing process and low cost, and can be used for large-scale production.

(4) The PDMS/AIE composite luminescent fiber prepared by the method has high elasticity and high luminescence, can be directly woven into textiles, realizes the elasticity which is difficult to meet by the traditional high-energy luminescent device with rigidity and inelastic structure, and is suitable for flexible wearable equipment.

Drawings

FIG. 1 is a schematic representation of a fiber spun according to the present invention;

FIG. 2a is a photograph of the luminescent fibers of example 4 of the present invention emitting light under ultraviolet light excitation;

FIG. 2b is a photograph of the luminescent fibers of example 2 of the present invention emitting light under ultraviolet light excitation;

FIG. 2c is a photograph of the luminescent fibers of example 5 of the present invention emitting light under ultraviolet light excitation;

FIG. 3a is a fluorescence spectrum of luminescent fibers of examples 2, 4 and 5 of the present invention;

FIG. 3b is a fluorescence spectrum of a luminescent fiber of examples 1 to 3 of the present invention;

FIG. 3c is the position of the luminescent fibers of examples 2, 4 and 5 of the present invention in chromaticity coordinates;

FIG. 4a is an SEM image of a cross section of a luminescent fiber of example 4 of the present invention;

FIG. 4b is a confocal fluorescence micrograph of a luminescent fiber of example 4;

FIG. 4c is a confocal fluorescence micrograph of a luminescent fiber of example 5;

FIG. 4d is a confocal fluorescence micrograph of a luminescent fiber of example 1;

FIG. 4e is a confocal fluorescence micrograph of a luminescent fiber of example 2;

FIG. 4f is a confocal fluorescence micrograph of a luminescent fiber of example 3;

FIG. 5a is a mechanical tensile curve for different levels of AIE molecules II;

FIG. 5b is a drawing curve of the luminescent fibers of examples 2, 4 and 5;

FIG. 6a is a schematic drawing of a luminescent fiber of example 2;

figure 6b is a schematic load-bearing view of the luminescent fiber of example 2.

Detailed Description

The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.

In one aspect, the present invention provides a composite luminescent fiber, wherein the luminescent composite fiber comprises a polymer and aggregation-induced emission AIE molecules; the curing temperature of the polymer is 0-300 ℃.

According to the invention, in order to ensure that aggregation-induced emission AIE molecules can be added into polymers to prepare the luminescent composite fiber, the inventor researches on the polymers used in the composite fiber, and shows that the polymers with the curing temperature of 0-300 ℃ are selected as matrix materials, and the luminescent performance of the aggregation-induced emission AIE molecules can be not lost when the polymers are matched with the aggregation-induced emission AIE molecules, so that the composite fiber with excellent luminescent performance and mechanical performance meeting the requirement is prepared.

And Aggregation Induced Emission (AIE) molecules having any one of the structures represented by formulas I-III shown below.

The aggregation-induced emission AIE molecule having the structure shown above has high luminescence under excitation of ultraviolet light, and specifically, under excitation of ultraviolet light, the molecule having the structure shown in formula I emits red light, the molecule having the structure shown in formula II emits green light, and the molecule having the structure shown in formula III emits blue light.

Wherein the aggregation-induced emission (AIE) molecule I of formula I is according to reference "He, x; zhao, z.; xiong, l.h.; gao, p.f.; peng, c.; li, r.s.; xiong, y.; li, Z.; sung, h.h.; williams, i.d.; kwok, r.t.k.; lam, J.W.Y.; huang, c.z.; ma, n.; tang, B.Z., Redox-Active AIEgen-derived plasma and Fluorescent Core for MultimodealityBioimaging.J.Am ChemSoc 2018,140(22), 6904-.

Aggregation-induced emission (AIE) molecules II of formula II are according to the references "Li, j.; zhang, y.; mei, j.; lam, J.W.; hao, j.; tang, B.Z., Aggregation-induced emission rotors, proportional design and tunable rigid response chemistry 2015,21(2),907 914'.

Aggregation-induced emission (AIE) molecule III of formula III is according to reference "Wang, j.; wang, s.; zhou, y.; wang, x.; he, Y, Fast photo-induced target formation of colloidal spheres from a Novel 4-arm azobenzone compound. ACS applied Mater Interfaces2015,7(30),16889-16895 ".

According to the invention, the weight ratio of the polymer to the aggregation-induced emission AIE molecules is (0.5:1000) - (60: 1000).

In the present invention, the inventors have studied the weight ratio of the polymer to the aggregation-induced emission AIE molecules in the composite luminescent fiber, and the studies have shown that when the weight ratio of the polymer to the AIE satisfies the above range, the luminescent properties and the overall mechanical properties of the composite luminescent fiber obtained are most excellent.

In order to further improve the luminescence property and the overall mechanical property of the composite luminescent fiber, the weight ratio of the polymer to the aggregation-induced emission AIE molecule is preferably (1:1000) to (50:1000), more preferably (5:1000) to (15: 1000).

Further, the curing temperature of the polymer is preferably 110-.

In the present invention, in order to ensure that the resulting fiber has excellent light-emitting properties, the polymer used in the present invention is preferably a polymer having high transparency.

According to the invention, the polymer is at least one of polydimethylsiloxane, epoxy resin and polyurethane.

In the present invention, it is preferable to prepare a composite fiber by compounding polydimethylsiloxane PDMS as a polymer with aggregation-induced emission AIE molecules. Because the bond angle Si-O-Si of PDMS is very open and the distance between atoms is large, the rotation energy of Si-O is very low (almost zero), so that the molecular chain of PDMS is very flexible, and the fiber prepared by spinning by adopting Polydimethylsiloxane (PDMS) as a base material has excellent flexibility and elasticity. In addition, PDMS has transparency and does not affect the luminescence of the luminescent material.

The invention takes AIE as a luminescent material to be compounded with PDMS to prepare the composite luminescent fiber, and the prepared fiber not only has excellent luminescent property, but also maintains the flexibility and elasticity of PDMS.

The composite luminescent fiber provided by the invention is suitable for flexible wearable equipment.

In a second aspect, the present invention provides a method for preparing the composite luminescent fiber of the present invention, comprising the steps of:

step 1): adding aggregation-induced emission AIE molecules into a first solvent for dissolving to obtain an aggregation-induced emission AIE molecular solution;

step 2): adding a polymer into a second solvent for dissolving to obtain a polymer solution;

step 3): adding the polymer solution into an aggregation-induced emission AIE molecular solution, and stirring until the polymer solution and the AIE molecular solution are uniformly mixed to obtain a polymer/AIE composite solution;

step 4): carrying out pre-curing treatment on the polymer/AIE composite liquid, and cooling to obtain a spinning solution;

step 5): and (3) in spinning equipment, putting the spinning solution into a spinning solidification bath for spinning, washing and drying to obtain the composite luminescent fiber.

The preparation method provided by the invention realizes the composite spinning of the polymer and the aggregation-induced emission AIE molecules so as to prepare the composite luminescent fiber. Because the AIE molecules have high luminescence under the excitation of ultraviolet light, and the polymer can provide the mechanical properties required by the composite fiber, the formed polymer/AIE composite luminescent fiber has excellent luminescence and meets the required mechanical properties.

According to the present invention, the first solvent and the second solvent are each independently selected from at least one of dichloromethane, cyclohexane, phenol, toluene, acetonitrile, chlorobenzene, and methyl acetate.

According to the invention, in step 4), the conditions of the pre-curing treatment are as follows: the pre-curing temperature is 40-80 ℃, and the pre-curing time is 5-40 min.

In the present invention, the pre-curing treatment may be performed in an oven.

According to the invention, the cooling conditions comprise: the cooling time is 1-50 min.

In the present invention, the inventors have observed that the pre-curing treatment allows to adjust the viscosity of the polymer/AIE composite liquid, making it suitable for the subsequent spinning process, enabling the formation of fibers from such (polymer/AIE composite liquid) material. And researches show that when the pre-curing temperature is in the range of 40-80 ℃, the pre-curing is carried out for 5-40min, and the cooling time is in the range of 1-50min, the composite liquid has the most appropriate viscosity.

In the invention, in the process of transferring the spinning solution to spinning equipment for spinning, bubbles in the spinning solution are required to be avoided so as to reduce the influence of the bubbles in the spinning solution on the spinning process and further reduce the mechanical property of the fiber prepared by spinning.

According to the invention, the spinning steps are specifically as follows: transferring the spinning solution into an extruding device, extruding the spinning solution into an oil bath at the speed of 1-10ml/min, curing and forming, and collecting on a winding shaft at the linear speed of 1-3 m/min.

In the present invention, an extrusion device commonly used in the art may be selected, and preferably, a syringe is selected as the extrusion device.

More preferably, the volume of the extrusion device is 50-100 ml.

In the invention, the curing and forming time is 1-10 s.

Preferably, the pre-curing temperature is 50-70 ℃, the pre-curing time is 10-25min, and the cooling time is 5-30 min.

In the invention, a uniform temperature field is formed in the curing bath during the spinning process, and the fiber curing speed in the spinning curing bath is very high, so that the diameter of the polymer/AIE composite luminescent fiber obtained by spinning is not uniform if the temperature field is not uniform, and the quality of the fiber is influenced.

According to the invention, in step 5), the temperature of the spinning solidification bath is 110 ℃ to 240 ℃, preferably 150 ℃ to 200 ℃.

In the present invention, the spinning and curing bath is an oil bath system, preferably a silicone oil system.

In the present invention, the diameters of polymer/aggregation-inducing luminescent molecule composite luminescent fibers having different diameters are obtained by adjusting the diameter of the outlet of the extrusion device.

In the present invention, the diameter of the polymer/aggregation-inducing luminescent molecule composite luminescent fiber is 100 μm to 1000 μm, preferably 500 μm.

According to the invention, in step 5), the washing detergent is deionized water and/or ethanol, preferably deionized water.

In the present invention, the washing process comprises: the number of times of deionized water cleaning is 1-3.

According to the invention, in step 5), the drying conditions comprise: the drying temperature is 40-90 deg.C, preferably 50-70 deg.C, and the drying time is 10-60min, preferably 20-40 min.

The invention selects polydimethylsiloxane PDMS as polymer and aggregation induced emission AIE molecule to prepare luminescent composite material, which comprises the following steps:

step 1): adding aggregation-induced emission AIE molecules into an organic solvent for dissolving to obtain an aggregation-induced emission AIE molecular solution;

step 2): adding the component A of polydimethylsiloxane PDMS into the aggregation induced emission AIE molecular solution, stirring until the mixture is uniformly mixed, and carrying out vacuum drying to obtain a component A composite solution of AIE @ PDMS;

step 3): adding the component B of polydimethylsiloxane PDMS into the component A composite liquid of AIE @ PDMS, and stirring and uniformly mixing to obtain an AIE @ PDMS composite liquid;

step 4): carrying out pre-curing treatment on the AIE @ PDMS composite liquid, and cooling to obtain a spinning solution;

step 5): and (3) in spinning equipment, putting the spinning solution into a spinning solidification bath for spinning, washing and drying to obtain the composite luminescent fiber.

In the invention, polydimethylsiloxane PDMS is composed of a body (A) and a curing agent (B). In particular, the polydimethylsiloxane PDMS may be commercially available, such as the Sylgard 184 product from Dow Corning, USA.

In the invention, polydimethylsiloxane PDMS is preferably selected as a polymer and aggregation-induced emission AIE molecules to prepare the luminescent composite material. The PDMS has excellent elasticity and transparency, so that the formed PDMS/AIE composite luminescent fiber has excellent luminescence and elasticity.

Further, in step 2), the weight ratio of the aggregation-inducing luminescent AIE molecule to the a component of the polydimethylsiloxane PDMS is (0.5:1000) to (65:1000), preferably (1.1:1000) to (57:1000), more preferably (5:1000) to (15: 1000).

In the invention, the bulk A component of PDMS is mixed with aggregation-induced emission AIE molecules in advance, and the A component composite liquid of AIE @ PDMS is obtained by vacuum drying. According to research, when the weight ratio of the aggregation-induced emission AIE molecules to the A component of polydimethylsiloxane PDMS is (0.5:1000) - (65:1000), the finally prepared composite luminescent fiber has excellent luminescent performance and elasticity.

More preferably, when the weight ratio of the aggregation-induced emission AIE molecules to the A component of polydimethylsiloxane PDMS is (1.1:1000) - (57:1000), and even more preferably, when the weight ratio of the aggregation-induced emission AIE molecules to the A component of polydimethylsiloxane PDMS is (5:1000) - (15:1000), the prepared composite luminescent fiber has more excellent performance.

In order to remove the adverse effect of the organic solvent on the subsequent operation steps, in the present invention, the uniform mixture of polydimethylsiloxane and aggregation-induced emission molecules is preferably subjected to vacuum drying treatment, and it is found that the organic solvent in the mixture can be removed when the mixture is dried at a drying temperature of 30 ℃ to 90 ℃ for 1 to 6 hours.

Further research shows that the drying temperature of vacuum drying is preferably 40-80 ℃, and the drying time is preferably 2-4 h.

When the body A and the curing agent B are mixed and heated, the mixture can generate a crosslinking reaction to enable the liquid PDMS to be cured to form a solid product, and different weight ratios of the body to the curing agent can affect the performance of the final product.

In order to obtain a composite luminescent fiber with excellent luminescence property, flexibility and elasticity, the inventor researches the weight ratio of the main body A to the curing agent B in PDMS, the pre-curing temperature and the pre-curing time, and researches the result that when the weight ratio of the B component of polydimethylsiloxane PDMS to the A component of polydimethylsiloxane PDMS is 0.1-6:10, the prepared composite luminescent fiber has excellent elasticity and does not influence the luminescence property of the composite luminescent fiber.

Preferably, the weight ratio of the bulk a to the curing agent B is 0.5-3:10, more preferably 1-2: 10.

According to the invention, the conditions of drying include: the drying temperature is 40-90 deg.C, preferably 50-70 deg.C, and the drying time is 10-60min, preferably 20-40 min.

In a third aspect, the invention provides a use of the composite luminescent fiber of the invention or the composite luminescent fiber prepared by the method of the invention, wherein the use is a flexible wearable device.

The present invention will be described in detail below by way of examples. In the following examples, the fluorescence properties of the composite luminescent fibers were measured by fluorescence spectroscopy using an apparatus of perkin elmer (PerkinElmer) LS 55;

the mechanical property of the composite luminescent fiber is measured by a universal testing machine method, and an instrument used for the test is Instron 5944;

the confocal fluorescence micrographs of the composite luminescent fibers are measured by a confocal laser scanning fluorescence microscopy method, and the instrument used for the test is Nikon C2 +;

polydimethylsiloxane PDMS body A and curing agent B are Sylgard 184 products available from Dow Corning, USA;

the aliphatic copolyester ecoflex was obtained from BASF;

an Aggregation Induced Emission (AIE) molecule I shown as a formula I is a self-made molecule, and a specific preparation method is shown in 'He, X'; zhao, z.; xiong, l.h.; gao, p.f.; peng, c.; li, r.s.; xiong, y.; li, Z.; sung, h.h.; williams, i.d.; kwok, r.t.k.; lam, J.W.Y.; huang, c.z.; ma, n.; tang, B.Z., Redox-ActiveAIEgen-Derived plasma and Fluorescent Core @ Shell nanoparticies for Multimodility bioimaging.J.Am ChemSoc 2018,140(22), 6904-;

the aggregation-induced emission (AIE) molecule II represented by formula II is a self-made molecule, and the specific preparation method is described in "Li, j.; zhang, y.; mei, j.; lam, J.W.; hao, j.; tang, B.Z., Aggregation-induced emulsions: proportional design and tunable rigid response.chemistry 2015,21(2),907, 914 ";

an aggregation-induced emission (AIE) molecule III shown in formula III is a self-made molecule, and a specific preparation method is described in "Wang, j.; wang, s.; zhou, y.; wang, x.; he, Y., Fast Photooily transformed target formation of colloidal Spheres from a Novel 4-arm Azobenzene compound. ACS Appl MaterInterfaces 2015,7(30), 16889-;

other materials are commercially available.

Preparation example

The luminescent fiber is prepared by adopting the spinning method shown in figure 1, and the specific operation steps are as follows:

transferring the spinning solution into a 100ml injector, simultaneously heating the oil bath to 150 ℃, extruding the spinning solution into the oil bath by an injection pump at the speed of 8ml/min, quickly curing and forming the spinning solution into fibers in the oil bath for 8s, collecting the fibers on a winding shaft at the linear speed of 2m/min, and finally washing and drying.