阅读说明：本技术 一种可视化荧光纤维及其制备方法和应用 (Visual fluorescent fiber and preparation method and application thereof ) 是由 王强斌 孙自强 于 2020-12-31 设计创作，主要内容包括：本发明揭示了一种可视化荧光纤维及其制备方法和应用。所述可视化荧光纤维包括掺杂荧光材料的核层纤维以及包覆在所述核层纤维上的壳层,至少所述最外层壳层表面是疏水的。本发明提供的可视化荧光纤维具有高亮度、良好疏水性、高稳定性、机械性能和直径可控等优点,且其制备工艺简单、反应条件温和、可大规模生产,本发明的荧光纤维有望为360°黏小管手术提供更简单、精准、快速、安全的穿管方法,提高手术成功率,具有极高的临床应用前景,同时也为360°黏小管手术和青光眼治疗提供新的研究思路。(The invention discloses a visual fluorescent fiber and a preparation method and application thereof. The visual fluorescent fiber comprises a core layer fiber doped with a fluorescent material and a shell layer coated on the core layer fiber, and at least the surface of the shell layer at the outermost layer is hydrophobic. The visual fluorescent fiber provided by the invention has the advantages of high brightness, good hydrophobicity, high stability, controllable mechanical property and diameter and the like, the preparation process is simple, the reaction condition is mild, and large-scale production can be realized.)

1. The visual fluorescent fiber is characterized by comprising a core layer fiber doped with a fluorescent material and a shell layer coated on the core layer fiber, wherein at least the surface of the shell layer at the outermost layer is hydrophobic.

2. The visualization fluorescence fiber of claim 1, wherein: the core layer fiber is made of cellulose or calcium alginate; and/or the diameter of the core layer fiber is 100-200 μm; preferably, the cellulose comprises any one or combination of more of cellulose nanocrystals, cellulose nanofibers, bacterial cellulose.

3. The visualization fluorescence fiber of claim 1, wherein: the shell layer comprises a first shell layer and a second shell layer which are sequentially coated on the core layer fiber, and the second shell layer is made of a hydrophobic material; preferably, the material of the first shell layer comprises silicon dioxide; preferably, the thickness of the first shell layer is 1-5 μm; preferably, the hydrophobic material comprises fluorosilane or polydimethylsiloxane; preferably, the thickness of the second shell layer is 2-50 μm; more preferably, the fluorosilane comprises perfluorodecyl triethoxysilane, perfluorooctyl triethoxysilane, or perfluorododecyl trichlorosilane;

or, the shell layer is formed by aggregation of fluorinated silica nanoparticles; preferably, the size of the fluorinated silica nanoparticles is 10-500 nm.

4. The visualization fluorescence fiber of claim 1, wherein: the content range of the fluorescent material in the core layer fiber is 0.01-2 wt%; and/or the fluorescent material comprises one or more of fluorescent powder, fluorescent nano-material and organic dye small molecule.

5. The method for preparing the visual fluorescent fiber of any one of claims 1 to 4, which is characterized by comprising the following steps:

preparing a core layer fiber doped with a fluorescent material, and coating a shell layer on the surface of the core layer fiber.

6. The method for preparing the visualized fluorescent fiber according to claim 5, characterized by comprising the following steps: injecting a cellulose solution doped with a fluorescent material into a coagulating bath containing a dehydrating solvent and a cationic surfactant, performing wet stretching treatment and drying to obtain a core layer fiber, wherein the cellulose solution contains 1-10 wt% of a cellulose material and 0.01-2 wt% of the fluorescent material;

or injecting 1-10% of calcium alginate solution doped with fluorescent materials into a coagulating bath containing metal cations and cationic surfactants, carrying out wet stretching treatment and drying to obtain core-layer fibers, wherein the calcium alginate solution contains 1-10 wt% of calcium alginate and 0.01-2 wt% of fluorescent materials;

preferably, the concentration of the metal cation in the coagulating bath is 0.1-1mol/L, and the concentration of the cationic surfactant is 0.1-10 mmol/L.

7. The method for preparing a visualized fluorescent fiber according to claim 6, characterized in that: the dehydration solvent comprises acetone or ethanol; and/or the cationic surfactant comprises one or more of didecyl dimethyl ammonium chloride, didodecyl dimethyl ammonium bromide, hexadecyl trimethyl ammonium chloride or hexadecyl trimethyl ammonium bromide; and/or, the metal cation comprises Ca²⁺、Ba²⁺、Zn²⁺、Al³⁺Or Fe³⁺。

8. The method for preparing the visualized fluorescent fiber according to claim 5, characterized by comprising the following steps: placing the core layer fiber in a tetrahydrofuran solution dispersed with fluorinated silica nanoparticles, so that the fluorinated silica nanoparticles are aggregated on the surface of the core layer fiber to form a shell layer, and preparing the visual fluorescent fiber;

preferably, the weight ratio of the fluorinated silica nanoparticles to tetrahydrofuran in the tetrahydrofuran solution in which the fluorinated silica nanoparticles are dispersed is 0.1-2: 10.

9. The method for preparing the visualized fluorescent fiber according to claim 5, characterized by comprising the following steps:

placing the nuclear layer fiber in an alkaline ethanol solution of ethyl orthosilicate so as to coat a silicon dioxide shell layer on the surface of the nuclear layer fiber;

fully contacting the nuclear layer fiber coated with the silicon dioxide shell layer on the surface with a fluorosilane solution or a polydimethylsiloxane solution to prepare a visual fluorescent fiber;

preferably, the alkaline ethanol solution of the ethyl orthosilicate comprises ethyl orthosilicate, ethanol and ammonia water with the mass percentage concentration of 10-50% in the volume ratio of 1-4: 50: 1-10.

10. A Schlemm's cannulation device comprising the visualizing fluorescent fiber of any of claims 1-4.

Technical Field

The invention belongs to the technical field of material synthesis chemistry and clinical medicine, and particularly relates to a visual fluorescent fiber and a preparation method and application thereof.

Background

Glaucoma is the first irreversible blinding eye disease in the world, and has the pathological mechanism that the resistance of Schlemm's intraductal side wall and adjacent canal tissues is increased, the outflow of aqueous humor in eyes is blocked, and the intraocular pressure is increased. The treatment aims at reducing intraocular pressure, finally protects optic nerves from damage and maintains the existing visual function, and is divided into three methods, namely a medicine method, a laser method and an operation method, wherein the operation method is the most effective treatment method, and the foremost and most effective method is a 360-degree viscoelastic Schlemm tube (adhesive tubule) operation, so that drainage of physiological approaches of aqueous humor can be effectively promoted, and the intraocular pressure is reduced.

A key step in 360 ° visco-tubule surgery is through the entire circumference of Schlemm's canal (cannulation), but current clinical microcatheter and suture cannulation is difficult to quickly and accurately thread through the entire circumference of Schlemm's canal, which is only about 300 μm in diameter. Although a great deal of research is carried out by numerous Schlemm at home and abroad to solve the problem of penetrating a 360-degree Schlemm tube, a rapid, accurate, stable and safe tube penetrating method is still lacked at present.

Disclosure of Invention

The invention mainly aims to provide a visual fluorescent fiber, a preparation method and application thereof, so as to overcome the defects in the prior art.

In order to achieve the above object, the embodiment of the present invention adopts a technical solution comprising:

the embodiment of the invention provides a visual fluorescent fiber, which comprises a core layer fiber doped with a fluorescent material and a shell layer coated on the core layer fiber, wherein at least the surface of the shell layer at the outermost layer is hydrophobic.

Further, the core layer fiber comprises cellulose or calcium alginate.

Further, the shell layer comprises a first shell layer and a second shell layer which are sequentially coated on the core layer fiber, and the second shell layer is made of a hydrophobic material; preferably, the material of the first shell layer comprises silicon dioxide; preferably, the thickness of the first shell layer is 1-5 μm; preferably, the hydrophobic material comprises fluorosilane or polydimethylsiloxane; preferably, the thickness of the second shell layer is 2-50 μm; more preferably, the fluorosilane comprises perfluorodecyl triethoxysilane, perfluorooctyl triethoxysilane, or perfluorododecyl trichlorosilane.

Further, the shell layer is formed by aggregating fluorinated silica nanoparticles; preferably, the size of the fluorinated silica nanoparticles is 10-500 nm.

The embodiment of the invention also provides a preparation method of the visual fluorescent fiber, which comprises the following steps:

preparing a core layer fiber doped with a fluorescent material, and coating a shell layer on the surface of the core layer fiber.

Further, the preparation method of the visual fluorescent fiber comprises the following steps: injecting a cellulose solution doped with a fluorescent material into a coagulating bath containing a dehydrating solvent and a cationic surfactant, and performing wet drawing treatment and drying to obtain a core layer fiber, wherein the cellulose solution contains 1-10 wt% of a cellulose material and 0.01-2 wt% of a fluorescent material.

Further, the preparation method of the visual fluorescent fiber comprises the following steps: injecting 1-10% of calcium alginate solution doped with fluorescent materials into a coagulating bath containing metal cations and cationic surfactants, carrying out wet stretching treatment and drying to obtain the core-layer fiber, wherein the calcium alginate solution contains 1-10 wt% of calcium alginate and 0.01-2 wt% of fluorescent materials.

Further, the preparation method of the visual fluorescent fiber comprises the following steps: and (3) placing the core layer fiber in a tetrahydrofuran solution dispersed with the fluorinated silica nanoparticles, so that the fluorinated silica nanoparticles are aggregated on the surface of the core layer fiber to form a shell layer, and preparing the visual fluorescent fiber.

Further, the preparation method of the visual fluorescent fiber comprises the following steps:

placing the nuclear layer fiber in an alkaline ethanol solution of ethyl orthosilicate so as to coat a silicon dioxide shell layer on the surface of the nuclear layer fiber;

the nuclear layer fiber coated with the silicon dioxide shell layer on the surface is fully contacted with fluorosilane solution or polydimethylsiloxane solution, so as to prepare the visual fluorescent fiber.

The embodiment of the invention also provides a Schlemm tube penetrating device which comprises the visual fluorescent fiber.

Compared with the prior art, the invention has the following beneficial effects:

compared with the existing light guide fiber and polypropylene suture which are clinically applied, the visual fluorescent fiber has the advantages of high fluorescence intensity, adjustable mechanical property, full-period luminescence, easy clinical transformation and the like, has the advantages of simple preparation process, mild reaction condition, controllable mechanical property and diameter, large-scale production and the like, can provide a simpler, accurate, rapid and safe tube penetrating method for 360-degree small tube adhesion surgery, improves the success rate of the surgery, and provides a new research idea for 360-degree small tube adhesion surgery and glaucoma treatment.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an environmental scanning electron micrograph of a visible fluorescent fiber according to an embodiment of the present application.

Fig. 2 is a stress-strain relationship diagram of a visualization fluorescent fiber according to an embodiment of the present application.

Fig. 3 is a water contact angle graph of a visualization fluorescent fiber according to an embodiment of the present application.

Fig. 4 a-4 b are diagrams of an eyeball and its fluoroscopic images during a surgical intubation procedure according to an embodiment of the present application.

Detailed Description

The present invention will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed embodiment.

In view of the difficulty that the microcatheter method and suture method which are clinically used at present can not rapidly and accurately pass through the whole peripheral lumen of the Schlemm tube with the diameter of only about 300 mu m, the inventor provides the technical scheme of the invention through long-term research and a large number of experiments. The technical scheme mainly comprises the steps of using cellulose or sodium alginate doped with fluorescent materials as core layer fibers, performing hydrolysis of tetraethoxysilane in an alkaline ethanol environment, using the core layer fibers as a template, coating a silicon dioxide shell layer on the core layer fibers, and then performing impregnation by a fluorosilane solution or a polydimethylsiloxane solution to obtain the core-shell structure fluorescent fibers with strong fluorescence intensity and good hydrophobicity, or using the core layer fibers as a template, and coating a fluorinated silicon dioxide nanoparticle layer on the surfaces of the fibers to obtain the core-shell structure fluorescent fibers with strong fluorescence intensity and good hydrophobicity, wherein the fluorescent fibers have the advantages of high brightness, simple preparation, mild reaction conditions, controllable mechanical properties and diameters, high stability, easy clinical transformation and the like The cost is low, and the like, and the accurate full-circumference tube penetration of the Schlemm tube in the glaucoma operation can be guided to a doctor by adjusting the optical filters of the exciting light and the signal light. The technical solution of the present invention will be explained in more detail as follows.

One aspect of the embodiments of the present invention provides a visible fluorescent fiber, including a core layer fiber doped with a fluorescent material and a shell layer coated on the core layer fiber, wherein at least a surface of the outermost shell layer is hydrophobic.

In some preferred embodiments, the core layer fibers are made of cellulose or calcium alginate; wherein the cellulose may include any one or a combination of more of cellulose nanocrystals, cellulose nanofibers, bacterial cellulose, and the like, but is not limited thereto.

In some preferred embodiments, the core layer fibers have a diameter of 100-200 μm.

In some preferred embodiments, the shell layer comprises a first shell layer and a second shell layer coated on the core layer fiber in sequence, and the second shell layer is formed by hydrophobic material; preferably, the material of the first shell layer comprises silicon dioxide; preferably, the thickness of the first shell layer is 1-5 μm; preferably, the hydrophobic material comprises fluorosilane or polydimethylsiloxane; preferably, the thickness of the second shell layer is 2-50 μm; more preferably, the fluorosilane may include, but is not limited to, perfluorodecyl triethoxysilane, perfluorooctyl triethoxysilane, perfluorododecyl trichlorosilane, and the like.

According to the fluorescent fiber with the core-shell structure, the first shell is a silicon dioxide shell obtained by hydrolyzing tetraethoxysilane, so that the surface roughness is improved, more binding sites are provided for growing a fluoride layer, and the stability of the core-shell fiber can be improved by the shell.

In some preferred embodiments, the shell layer is formed by aggregation of fluorinated silica nanoparticles; preferably, the size of the fluorinated silica nanoparticles is 10-500 nm.

According to the fluorescent fiber with the core-shell structure, provided by the embodiment of the invention, the core-shell fiber is directly immersed in tetrahydrofuran of fluorinated silica particles, and the hydrophobic shell layer with rough surface and uniform fluorination is directly obtained by a one-step method.

In some preferred embodiments, the core layer fiber comprises 0.01 to 2 wt% of the fluorescent material.

In some preferred embodiments, the fluorescent material may include one or a combination of more of a phosphor, a fluorescent nanomaterial, an organic dye small molecule, and the like, but is not limited thereto.

Another aspect of the embodiments of the present invention further provides a preparation method of the above visualization fluorescent fiber, including:

preparing a core layer fiber doped with a fluorescent material, and coating a shell layer on the surface of the core layer fiber.

In some preferred embodiments, the preparation method of the visual fluorescent fiber comprises: injecting a cellulose solution doped with a fluorescent material into a coagulating bath containing a dehydrating solvent and a cationic surfactant, and performing wet drawing treatment and drying to obtain a core layer fiber, wherein the cellulose solution contains 1-10 wt% of a cellulose material and 0.01-2 wt% of a fluorescent material.

Or injecting 1-10% of calcium alginate solution doped with fluorescent materials into a coagulating bath containing metal cations and cationic surfactants, carrying out wet stretching treatment and drying to obtain core-layer fibers, wherein the calcium alginate solution contains 1-10 wt% of calcium alginate and 0.01-2 wt% of fluorescent materials;

preferably, the concentration of the metal cation in the coagulating bath is 0.1-1mol/L, and the concentration of the cationic surfactant is 0.1-10 mmol/L.

In some preferred embodiments, the dehydrating solvent comprises acetone or ethanol; the cationic surfactant may include one or more of Didecyl Dimethyl Ammonium Chloride (DDAC), Didodecyl Dimethyl Ammonium Bromide (DDAB), Cetyl Trimethyl Ammonium Chloride (CTAC), Cetyl Trimethyl Ammonium Bromide (CTAB), etc., but is not limited thereto; the metal cation comprises Ca²⁺、Ba²⁺、Zn²⁺、Al³⁺Or Fe³⁺。

In some more preferred embodiments, the wet drawing treatment is a gravity wet drawing treatment, that is, one end of wet fiber obtained by wet spinning is fixedly suspended, then the other end of the fiber is connected with weights with different weights, and after the fiber is dried in the air, the highly oriented fiber with controllable diameter can be obtained; the process has simple operation steps, and can greatly improve the orientation of the monofilament. The weight gravity comprises 5g, 10g, 20g and the like, fibers with different diameters can be prepared according to different gravity, and the diameter of the protofilament with the same diameter (500 mu m) is smaller and smaller after being stretched and dried (200 mu m → 160 mu m → 120 mu m) along with the increase of the gravity (5g → 20 g).

In some preferred embodiments, the preparation method of the visual fluorescent fiber comprises: and (3) placing the core layer fiber in a tetrahydrofuran solution dispersed with the fluorinated silica nanoparticles, so that the fluorinated silica nanoparticles are aggregated on the surface of the core layer fiber to form a shell layer, and preparing the visual fluorescent fiber.

In some preferred embodiments, the weight ratio of fluorinated silica nanoparticles to tetrahydrofuran in the tetrahydrofuran solution with dispersed fluorinated silica nanoparticles is 0.1-2: 10.

In some preferred embodiments, the preparation method of the visual fluorescent fiber comprises:

placing the nuclear layer fiber in an alkaline ethanol solution of ethyl orthosilicate so as to coat a silicon dioxide shell layer on the surface of the nuclear layer fiber;

the nuclear layer fiber coated with the silicon dioxide shell layer on the surface is fully contacted with fluorosilane solution or polydimethylsiloxane solution, so as to prepare the visual fluorescent fiber.

In some preferred embodiments, the alkali ethanol solution of the ethyl orthosilicate comprises ethyl orthosilicate with a volume ratio of 1-4: 50: 1-10, ethanol and ammonia water with a mass percentage concentration of 10-50%.

The invention also provides a Schlemm tube threading device, which comprises the visual fluorescent fiber, provides a light path modulation method, is applied to specific operation environments, and can complete the tube threading operation of 360-degree tubular adhesive surgery of pig eyes and rabbit eyes.

The visual fluorescent fiber provided by the embodiment of the invention has the advantages of high fluorescence intensity, adjustable mechanical property, full-period luminescence, easy clinical transformation and the like, has the advantages of simple preparation process, mild reaction conditions, controllable mechanical property and diameter, large-scale production and the like, can provide a simpler, accurate, rapid and safe tube penetrating method for 360-degree small tube adhesion surgery, improves the success rate of the surgery, and simultaneously provides a new research idea for the 360-degree small tube adhesion surgery and the glaucoma treatment.

Example 1: mixing 10mg CTAB-InP @ ZnS quantum dot (or 10mg nile red), 10g sodium alginate and 490g deionized water, stirring vigorously at 60 deg.C for 3h, vacuum pumping to remove bubbles, filling the precursor solution into a plastic injector, injecting into a coagulation bath through a steel tube with an inner diameter of 0.41mm and a length of 15cm at a speed of 5ml/min, wherein the coagulation bath comprises 0.1mol/L CaCl₂And 0.1mmol/L CTAB, soaking in coagulating bath for 10min,washing the fiber in deionized water to remove Ca on the surface²⁺And CTAB, then naturally drying the fiber in air with the humidity of 50%, observing the obtained fiber by an environment scanning electron microscope, and enabling the diameter of the whole fiber to be 150 +/-10 mu m; placing 10cm nuclear layer fiber in a mixed solution of 50ml of ethanol, 1ml of ethyl orthosilicate and 10ml of 28% ammonia water, heating the mixed solution at the temperature of 60 ℃, stirring the mixed solution vigorously for 6 hours, washing the fiber for 3 times by using ethanol, washing off silicon dioxide with untight surface bonding, then placing the fiber in a drying oven for drying, and characterizing the nuclear shell fiber by an environmental scanning electron microscope and an EDS energy spectrum, wherein the roughness of the fiber surface is greatly improved, silicon elements are uniformly distributed, and the diameter is about 155 +/-10 mu m; and then placing the dried core-shell fiber in an alkaline ethanol solution of 1 wt% of perfluorooctyl triethoxysilane, reacting for 0.5h, washing away fluorosilane with untight surface bonding by using ethanol, drying in an oven, performing environmental scanning electron microscope and EDS (electron emission spectroscopy) energy spectrum characterization to ensure that the surface is not obviously changed and fluorine elements are uniformly distributed (shown in figure 1), and then performing stress strain test and water contact angle measurement (shown in figures 2 and 3) on the fluorescent fiber to obtain the core-shell structure fluorescent fiber with good mechanical property and good hydrophobicity. At 30. mu.W/cm²The fluorescence fiber can penetrate through the eye tissue near the Schlemm tube under the excitation light power density of (1), so that doctors are guided to complete the tube-penetrating operation of rabbit eyes and pig eyes, and the result shows that the fluorescence fiber accurately surrounds the Schlemm tube for one circle (as shown in fig. 4 a-4 b).

Example 2: mixing 10mg CTAB-InP @ ZnS quantum dots (or 10mg nile red), 20g cellulose nano-fibers and 480g deionized water, violently stirring for 3h, vacuumizing to remove bubbles, filling the precursor solution into a plastic syringe, injecting the mixture into a coagulating bath through a steel pipe with the inner diameter of 0.41mm and the length of 15cm at the speed of 5ml/min, wherein the coagulating bath consists of acetone and 0.1mmol/LCTAB, washing the fibers in the deionized water to remove CTAB on the surface, fixing the fibers, naturally drying the fibers in air with the humidity of 50%, and observing the obtained fibers through an environmental scanning electron microscope, wherein monofilaments in the macroscopic fibers are tightly arranged, the orientation is high, the surface is smooth, and the diameter of the whole fiber is 150 +/-10 mu m; 0.1g of fluorinated silicaDissolving the particles in 10ml of tetrahydrofuran, carrying out ultrasonic treatment for 30min, then placing 10cm nuclear layer fibers in the tetrahydrofuran in which fluorinated silica nanoparticles are dissolved, stirring for 3h, then washing the surfaces of the fibers with ethanol, drying in an oven, carrying out characterization through an environment scanning electron microscope and an EDS energy spectrum, increasing the surface roughness, uniformly distributing fluorine elements, and then carrying out stress strain test and water contact angle measurement on the fluorescent fibers to obtain the nuclear shell structure fluorescent fibers with good mechanical properties and good hydrophobic properties. At 40. mu.W/cm²Under the excitation light power density, the light emitted by the fluorescent fibers can penetrate through eye tissues near the Schlemm tube to guide doctors to complete the tube-penetrating operations of rabbit eyes and pig eyes, and the result shows that the fluorescent fibers accurately surround the Schlemm tube for a circle.

Example 3: mixing 10mg of CTAB-InP @ ZnS quantum dots (or 10mg of Nile red), 15g of cellulose nano-fiber (or sodium alginate) and 485g of deionized water, vigorously stirring for 3 hours at 60 ℃, vacuumizing to remove bubbles, filling the precursor solution into a plastic injector, injecting the mixture into a coagulation bath through a steel pipe with the inner diameter of 0.41mm and the length of 15cm at the speed of 5ml/min, wherein the coagulation bath consists of acetone and 0.1mmol/LCTAB, washing the CTAB on the surface of the fiber in the deionized water, fixing the fiber, naturally drying the fiber in air with the humidity of 50%, and observing the obtained fiber through an environmental scanning electron microscope, wherein the diameter of the whole fiber is 180 +/-10 mu m; placing 10cm nuclear layer fiber in a mixed solution of 50ml of ethanol, 1ml of ethyl orthosilicate and 10ml of 28% ammonia water, heating the mixed solution to 60 ℃, violently stirring the mixed solution for 6 hours, washing the fiber for 3 times by using the ethanol, washing off silicon dioxide with untight surface bonding, then placing the fiber in a drying oven for drying, and performing characterization of an environment scanning electron microscope and an EDS energy spectrum on the nuclear shell fiber to improve the surface roughness of the fiber and ensure that the diameter is about 185 +/-10 mu m; activating the dried core-shell fiber by oxygen plasma, placing the core-shell fiber in a cyclohexane solution containing 1% of PDMS for fully reacting, cleaning the excessive PDMS and cyclohexane on the surface by ethanol, heating and curing the mixture for 2 hours at 80 ℃, increasing the surface roughness and the diameter of the fiber to be about 195 +/-10 mu m through an environmental scanning electron microscope and EDS (electron discharge spectroscopy) characterization, and then performing stress-strain test and water treatment on the fluorescent fiberAnd measuring the contact angle to obtain the core-shell structure fluorescent fiber with good mechanical property and good hydrophobic property. At 40. mu.W/cm²Under the excitation light power density, the light emitted by the fluorescent fibers can penetrate through eye tissues near the Schlemm tube to guide doctors to complete the tube-penetrating operations of rabbit eyes and pig eyes, and the result shows that the fluorescent fibers accurately surround the Schlemm tube for a circle.

Example 4: mixing 10mg CTAB-InP @ ZnS quantum dots (or 10mg nile red), 15g cellulose nano-fiber (or sodium alginate) and 485g deionized water, stirring vigorously for 3h at 60 ℃, vacuum-pumping to remove bubbles, filling the precursor solution into a plastic injector, injecting the mixture into a coagulating bath through a steel pipe with the inner diameter of 0.41mm and the length of 15cm at the speed of 5ml/min, wherein the coagulating bath consists of acetone and 0.1mmol/LCTAB, washing the CTAB on the surface of the fiber in the deionized water, fixing the fiber, naturally drying the fiber in air with the humidity of 50%, observing the obtained fiber through an environmental scanning electron microscope, wherein the diameter of the whole fiber is 180 +/-10 mu m, and then using CF (carbon fiber) for the dried core-shell fiber₄And (3) performing plasma treatment, namely characterizing by an environment scanning electron microscope and an EDS (electron-dispersive spectroscopy) energy spectrum, wherein the diameter is not changed greatly, fluorine elements are distributed uniformly, and then performing stress-strain test and water contact angle measurement on the fluorescent fiber to obtain the core-shell structure fluorescent fiber with good mechanical property and good hydrophobic property. At 40. mu.W/cm²Under the excitation light power density, the light emitted by the fluorescent fibers can penetrate through eye tissues near the Schlemm tube to guide doctors to complete the tube-penetrating operations of rabbit eyes and pig eyes, and the result shows that the fluorescent fibers accurately surround the Schlemm tube for a circle.

In addition, the inventors of the present invention have also referred to the above examples 1 to 4, synthesized other series of fluorescent fibers with other raw materials and reaction conditions according to the present specification, and also tested the performance of these fluorescent fibers, and the results are all preferable.

The aspects, embodiments, features and examples of the present invention should be considered as illustrative in all respects and not intended to be limiting of the invention, the scope of which is defined only by the claims. Other embodiments, modifications, and uses will be apparent to those skilled in the art without departing from the spirit and scope of the claimed invention.

The use of headings and chapters in this disclosure is not meant to limit the disclosure; each section may apply to any aspect, embodiment, or feature of the disclosure.

Throughout this specification, where a composition is described as having, containing, or comprising specific components or where a process is described as having, containing, or comprising specific process steps, it is contemplated that the composition of the present teachings also consist essentially of, or consist of, the recited components, and the process of the present teachings also consist essentially of, or consist of, the recited process steps.

Unless specifically stated otherwise, use of the terms "comprising", "including", "having" or "having" is generally to be understood as open-ended and not limiting.

It should be understood that the order of steps or the order in which particular actions are performed is not critical, so long as the teachings of the invention remain operable. Further, two or more steps or actions may be performed simultaneously.

In addition, the inventors of the present invention have also made experiments with other materials, process operations, and process conditions described in the present specification with reference to the above examples, and have obtained preferable results.

While the invention has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions and/or additions may be made and substantial equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims. Moreover, unless specifically stated any use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another.