CN114773754A - Polyvinyl alcohol-fluorenyl nanosheet composite film and preparation method thereof - Google Patents
Polyvinyl alcohol-fluorenyl nanosheet composite film and preparation method thereof Download PDFInfo
- Publication number
- CN114773754A CN114773754A CN202210497567.9A CN202210497567A CN114773754A CN 114773754 A CN114773754 A CN 114773754A CN 202210497567 A CN202210497567 A CN 202210497567A CN 114773754 A CN114773754 A CN 114773754A
- Authority
- CN
- China
- Prior art keywords
- fluorenyl
- polyvinyl alcohol
- nanosheet
- composite film
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/01—Hydrocarbons
Abstract
The invention discloses a polyvinyl alcohol-fluorenyl nanosheet composite film and a preparation method thereof, and belongs to the field of novel composite film materials. The polyvinyl alcohol-fluorenyl nanosheet composite film is formed by blending a fluorenyl nanosheet and a polyvinyl alcohol aqueous solution, wherein the doping mass ratio of the fluorenyl nanosheet to the polyvinyl alcohol aqueous solution in the blending process is 5%; the fluorenyl nanosheet is prepared from fluorenyl organic micromolecules by adding a surfactant; the fluorenyl organic micromolecules are molecules consisting of phenyl fluorene and pyrene groups. The polyvinyl alcohol-fluorenyl nanosheet composite film prepared by the method has the advantages of flat and smooth surface and higher film quality, the controllability of the composite film can be strong by regulating the fluorenyl nanosheet material and the doping ratio of the fluorenyl nanosheet material in the composite film, and meanwhile, the excellent photoelectric property of the micromolecule nanosheet and the flexibility of the polyvinyl alcohol can be combined to realize the good photoelectric and mechanical properties of the composite film.
Description
Technical Field
The invention belongs to the field of novel composite membrane materials, and particularly relates to a polyvinyl alcohol-fluorenyl nanosheet composite film and a preparation method thereof.
Background
In recent years, due to the advantages of efficient and low-cost preparation process and easy realization of large-area preparation, in an organic thin-film device, the photoelectric ink capable of being processed in an aqueous solution is more green and environment-friendly than a large amount of conventional volatile solvents, and has great advantages in the aspects of promoting human health, reducing energy consumption and the like. Nano-engineering provides us with water-dispersed organic nano-inks as a viable alternative and advances the supporting solution processing technology towards green organic electronics.
Despite this, recent research has shown that oriented organic nanowires can achieve crystalline thin films by means of self-assembly and have interesting optical switching properties. For example pyrene-functionalized spiro [ fluorene-9, 7' -dibenzo [ c, h ]]Acridine]The-5' -ketone (Py-SFDBAO) is assembled into a two-dimensional nano structure, and then a large-area high-quality and uniform crystalline thin film is constructed. The diode using the water-based nanosheet film as the active layer shows non-volatile bistable electric switching characteristics with an on/off ratio of 6.0 x 104The optical switch has 102-103The conduction gain of (2). However, the preparation of reproducible, high quality, uniform films remains a significant challenge in developing aqueous processing techniques. The amorphous film prepared by the traditional wet method is often insufficient in device stability, the repeatability of the process is difficult to ensure, and a plurality of complex mechanisms are involved in the process of converting the wet film into the film, so that the film is not uniform, such as coffee ring effect and the like.
Therefore, the research on the nano-sheet and water-system polymer doped film is carried out, and the development of a wet process which ensures good crystal controllability and stable repeatability is urgent, and the method has important significance for realizing the preparation of large-area flexible luminescent films.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a polyvinyl alcohol-fluorenyl nanosheet composite film and a preparation method thereof, wherein a fluorenyl nanosheet and a water-based polymer polyvinyl alcohol are doped and compounded, the polyvinyl alcohol-fluorenyl nanosheet composite film is obtained by regulating and controlling the fluorenyl nanosheet material and the doping ratio thereof, the surface of the polyvinyl alcohol-fluorenyl nanosheet composite film is smooth and high in film quality, and the excellent photoelectric property of the micromolecular nanosheet and the flexibility of polyvinyl alcohol can be combined to realize the good photoelectric and mechanical properties of the composite film.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a polyvinyl alcohol-fluorenyl nanosheet composite film is formed by blending a fluorenyl nanosheet and a polyvinyl alcohol aqueous solution, wherein the fluorenyl nanosheet is prepared by adding a surfactant into a fluorenyl organic small molecular compound; the fluorenyl organic micromolecule compound is a molecule consisting of phenylfluorene and pyrenyl, namely a PF-Py molecule, and the structural formula of the fluorenyl organic micromolecule compound is as follows:
preferably, the doping mass ratio of the fluorenyl nanosheet to the aqueous solution of polyvinyl alcohol in the blending process of the fluorenyl nanosheet is 5%, that is, the fluorenyl nanosheet: aqueous polyvinyl alcohol =5: 100. The surface appearance of the polyvinyl alcohol-fluorenyl nanosheet composite film is uneven along with the increase of the content of the fluorenyl nanosheets; when the impurity doping amount ratio of the fluorenyl nanosheet is 5%, a composite film with a smoother surface appearance can be prepared.
Preferably, the polyvinyl alcohol content of the polyvinyl alcohol aqueous solution is 8 wt% so as to ensure that the polyvinyl alcohol aqueous solution has the highest viscosity as possible, and the formed composite film has certain flexibility and thickness.
Preferably, the surfactant is a polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer.
The preparation method of the polyvinyl alcohol-fluorenyl nanosheet composite film comprises the following steps:
s1, placing the fluorenyl nano-sheet in a bottle filled with magnetons for dispersion by using deionized water;
s2, stirring for 3-5h for uniform dispersion;
s3, transferring the polyvinyl alcohol aqueous solution into the dispersion liquid obtained in the step S2, and stirring at normal temperature to obtain a white dispersion liquid;
s4, vacuumizing the white dispersion liquid in a freeze dryer for 30 min;
s5, dropping the dispersion obtained in step S4 on a glass substrate, and then placing it on a hot plate to evaporate and form a film.
Preferably, the preparation method of the fluorenyl nanosheet comprises the following steps:
step S101, preparing a surfactant solution;
step S102, dissolving a fluorenyl organic small molecular compound in tetrahydrofuran to prepare a sample solution, and then quickly injecting the sample solution into the surfactant solution obtained in the step S101 within 1-2 seconds to stir;
s103, standing at room temperature after stirring is completed to obtain a nano sheet material which completely grows; then washing and cleaning the surfactant through centrifugation to obtain a fluorenyl nanosheet;
and S104, drying the fluorenyl nanosheet obtained in the step S103, and transferring the dried fluorenyl nanosheet to a sample bottle for later use.
Preferably, the temperature of the heating plate of step S5 is 35 to 45 ℃.
Preferably, the concentration of the surfactant solution in step S101 is 1 mg/mL.
Preferably, the substance amount concentration of the sample solution in step S102 is 8 mM.
Preferably, the standing time in step S103 is 48 h.
Preferably, the rotation speed of the centrifugal washing in step S103 does not exceed 5000 rpm.
The technical scheme of the invention can produce the following technical effects:
1. according to the polyvinyl alcohol-fluorenyl nanosheet composite film provided by the invention, the fluorenyl nanosheet and the water-based polymer polyvinyl alcohol are doped and compounded, the controllability of the composite film is strong by regulating the fluorenyl nanosheet material and the doping proportion of the fluorenyl nanosheet material in the composite film, and meanwhile, the excellent photoelectric property of the micromolecule nanosheet and the flexibility of the polyvinyl alcohol can be combined to realize the good photoelectric and mechanical properties of the composite film; compared with common ink with poor controllability, the solution is gathered to present a coffee ring effect, and the polyvinyl alcohol-fluorenyl nanosheet composite film provided by the invention has the advantages of flat and smooth surface and high film quality.
2. The preparation method of the polyvinyl alcohol-fluorenyl nanosheet composite film provided by the invention has the advantages of high efficiency, low cost and stable repeatability, and can be used for easily realizing the film preparation of large-area solution processing.
3. The polyvinyl alcohol-fluorenyl nanosheet composite film prepared by the method can be processed in an aqueous solution, and the photoelectric ink is more green and environment-friendly than a large amount of conventional volatile solvent, and has great advantages in the aspects of promoting human health, reducing energy consumption and the like.
Drawings
Fig. 1 is an SEM image of PF-Py nanoplates according to the present invention;
fig. 2 is a picture of a polyvinyl alcohol-fluorenyl nanosheet composite film in accordance with the present invention;
FIG. 3 is a low power optical microscope image of the PVA-fluorenyl nanosheet composite film of the present invention;
FIG. 4 is a high power optical microscope image of the PVA-fluorenyl nanosheet composite film of the present invention;
FIG. 5 is a drawing of a PVA-fluorenyl nanoplatelet composite film according to the present invention;
FIG. 6 is a stretched fluorescence spectrum and normalized graph of a polyvinyl alcohol-fluorenyl nanosheet composite film of the present invention;
FIG. 7 is a bending diagram of the composite film of the present invention;
FIG. 8 is a graph illustrating the bent fluorescence spectrum and normalization of a composite film of poly (vinyl alcohol) -fluorenyl nanoplatelets in accordance with the present invention;
FIG. 9 is a patterned large area thin film implemented under a polyvinyl alcohol-fluorenyl nanoplatelet composite ink in accordance with the present invention;
FIG. 10 is a free standing film of a polyvinyl alcohol-fluorenyl nanoplatelet composite according to the present invention;
fig. 11 is a paper folding patterning of the polyvinyl alcohol-fluorenyl nanosheet composite film of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments.
The polyvinyl alcohol-fluorenyl nanosheet composite film is formed by blending a fluorenyl nanosheet and a polyvinyl alcohol aqueous solution, wherein the fluorenyl nanosheet is prepared by adding a surfactant into a fluorenyl organic small molecule, and the surfactant is a polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer; the fluorenyl organic micromolecules are molecules consisting of phenylfluorene and pyrenyl, namely PF-Py molecules, and the structural formula of the fluorenyl organic micromolecules is as follows:
the water-based polymer provided by the invention is polyvinyl alcohol with the molecular weight of 146000-186000, which is provided by Sigma-Aldrich Sigma Aldrich (Shanghai) trade company.
According to the polyvinyl alcohol-fluorenyl nanosheet composite film, the morphology of the fluorenyl nanosheet can possibly change at a high temperature of 100 ℃, so that the polyvinyl alcohol is completely dissolved in water at the temperature of 100 ℃, and then the polyvinyl alcohol-fluorenyl nanosheet composite film is compounded with the fluorenyl nanosheet.
The doping mass ratio of the fluorenyl nanosheet in the blending process of the fluorenyl nanosheet and the polyvinyl alcohol aqueous solution is 5%. The surface topography of the polyvinyl alcohol-fluorenyl nanosheet composite film is uneven along with the increase of the content of the fluorenyl nanosheet; when the impurity doping amount ratio of the fluorenyl nanosheets is 5%, a composite film with a relatively flat surface appearance can be prepared.
The composite film can be prepared into independent films at different annealing temperatures, and tests prove that the composite film formed at the temperature of over 50 ℃ has obvious defects, and mainly shows that the film has more bubbles and is not flat. When the temperature is below 30 ℃, the film forming time of the film is longer, and the temperature is not easy to realize in summer, so that under comprehensive consideration, 35-45 ℃ is selected as the solvent volatilization temperature.
The polyvinyl alcohol content of the polyvinyl alcohol aqueous solution is 8 wt% so as to ensure that the polyvinyl alcohol aqueous solution has the highest viscosity as possible, and the formed composite film has certain flexibility and thickness.
The preparation method of the polyvinyl alcohol-fluorenyl nanosheet composite film according to the present invention is described in detail below with reference to specific implementation steps.
Example 1 preparation of fluorenyl nanoplatelets
Firstly, preparing 1 mg/mL surfactant P123 aqueous solution in a volumetric flask, transferring 500 mL surfactant aqueous solution to a 1000 mL beaker, and adding magnetons for later use. Dissolving a proper amount of PF-Py molecules in 100 mL tetrahydrofuran completely, taking the total solution after dissolving completely, quickly injecting the total solution into a beaker containing a surfactant P123 aqueous solution, and stirring for about 5 min. In the process, white floccules can be observed in the bottle, and the bottle is milky white liquid after stirring. Taking out magnetons after stirring is finished, standing the solution at room temperature for about 2 days, centrifuging at the rotating speed lower than 5000rpm, and centrifuging and washing for about 3 times by using ultrapure water until the surfactant is completely washed. And depositing a drop of about 10 mu L of nanocrystal aqueous solution on a silicon substrate, putting the silicon substrate on a heating plate at the temperature of 40-45 ℃ for solvent evaporation, and completely evaporating the solvent after 3-4 hours to ensure that water is dried. Then the nano-particles are tested by a field emission SEM (Hitachi S-4800) under an accelerating voltage of 5 kV, and the nano-particles are observed, and the specific morphology is shown in figure 1. And (4) drying the rest crystals in an oven at 70 ℃ for 12-20 h, and transferring the crystals into a sample bottle for later use.
Example 2 preparation method of polyvinyl alcohol-fluorenyl nanosheet composite film
Step S1, placing 4 mg of PF-Py nanosheets into a 5 mL small bottle filled with magnetons, and dispersing the PF-Py nanosheets into 0.3 mL of deionized water;
s2, stirring for 3-5 hours to disperse uniformly;
step S3, transferring 1 mL of polyvinyl alcohol aqueous solution, namely PVA aqueous solution into the dispersion, and stirring for 6 h at normal temperature to form white dispersion;
step S4, vacuumizing the dispersion liquid in a freeze dryer for about 30min to remove the cheongsam, and taking out the sample from the freeze dryer;
step S5, dropping 200 μ L of the dispersion liquid onto a glass substrate processed in advance by using a liquid-transferring gun; and (3) placing the composite film on a heating plate at the temperature of 35-45 ℃, completely volatilizing the solvent for about 5 hours to form a film, and then slowly taking down the composite film from the edge of the film by using tweezers.
The preparation process of the polyvinyl alcohol-fluorenyl nanosheet composite film with the doping amount ratio of the fluorenyl nanosheet being 5 wt% can be repeated as required to prepare the polyvinyl alcohol-fluorenyl nanosheet composite films with different doping amount ratios.
Fig. 2 shows the appearance of the polyvinyl alcohol-fluorenyl nanosheet composite film under an optical microscope under different doping ratios, as shown in fig. 2, when 1 wt% of the nanosheets are present, the nanosheets do not cover the entire film surface, and when 5 wt% and 10 wt% of the nanosheets are present, the nanosheet film is flat and uniform, and has a good appearance. When the weight percent of the nano sheets is 15 percent, the nano sheets doped in the film can be found to be agglomerated, the surface of the film is uneven, and the agglomeration phenomenon is very obvious when the weight percent of the nano sheets is 20 percent. As shown in fig. 3, the profile further verifies the effect of further increasing the doping ratio on the flatness of the film. As shown in fig. 4, under the condition that the doping mass ratio of the fluorenyl nanosheet is 5 wt%, a high power optical microscope shows the existence of the lamellar crystals in the composite film, the size of the crystals is substantially consistent with that of the nanosheet in fig. 1, and the nanosheet is verified to be free from dissolution and the like during the doping process. But the appearance of the nano-sheets in the film is damaged to a certain extent due to vacuum pumping and long-time stirring operation.
The polyvinyl alcohol-fluorenyl nanosheet composite films prepared in embodiments 1 and 2 are applied to optoelectronic flexible devices.
Test example 1 Spectrum Change rule of polyvinyl alcohol-fluorenyl nanoplate composite film under stretching
The polyvinyl alcohol-fluorenyl nanometer sheet composite film can be peeled off from a quartz sheet, so that the film does not adhere to a substrate and independently exists, and the film can be bent and folded at will. However, the dry film has a small hydrogen bond acting force, which results in a large tensile strength and a small deformation, so if the change rule of the spectrum of the composite film under tension is to be verified, the hydrogen bond of the composite film needs to be increased, because the polyvinyl alcohol contains many hydroxyl groups and can form hydrogen bonds with water, the composite film is controlled under a high humidity environment in an experiment, but the difficulty is that the composite film can be directly dissolved when contacting water, and therefore, the test example adopts the following mode: taking a centrifuge tube box, placing cotton at the bottom of the box, pouring a proper amount of deionized water, placing a plastic sheet at the upper part of the hole of the centrifuge tube, and fixing the composite film on the plastic sheet by using a double-sided adhesive tape. After the transparent cover was closed, the cover was sealed with a sealing film. In order to improve the speed of water vapor permeating the composite membrane and ensure that the composite membrane is not dissolved, a 40 ℃ constant temperature box is selected for placing a sealed centrifugal tube in an experiment after verification. After 24-48 h, a large number of hydrogen bonds are formed between the composite film and water, and immediate tensile test verifies that the composite film can realize about 30% strain, as shown in fig. 5.
To validate the testing of the spectra under tension of the composite films, experiments need to address how to place the stretched films in a fluorescence spectrometer. To fix the deformation of the film, it is necessary to adhere the film to the substrate. In addition, in order to conveniently measure the deformation quantity, the substrate is preferably provided with a self-indication number. In view of the above considerations, the test example selected to adhere the film to a vernier caliper having a length of 60 cm. The device has the following advantages. 1. The size is small, and the device can be placed on a clamp of a fluorescence spectrometer; 2. as a substrate, fixing the deformation of the film; 3. the device is provided with a reading function, and the measurement is convenient; 4. the film can realize deformation along with the movement of the caliper, and the double-sided adhesive tape is fixed at one time, so that the measurement under multiple strains can be realized; 5. compared with manual stretching measurement, the device can measure more accurately. The specific apparatus and stretching of this test example are shown in FIG. 5.
As shown in fig. 6, the composite films were tested for deformation of 0, 10%, 20%, 30%. According to the fluorescence spectrum and the normalized graph thereof, the spectral shift is not changed along with the increase of the tensile deformation, but the fluorescence intensity is slightly enhanced. As shown in fig. 7, the compound membrane was fixed to a vernier caliper, and the bending of the membrane was achieved by the movement of the caliper.
As shown in fig. 8, the composite film was measured for spectra after 300, 600, and 900 bends. According to the fluorescence spectrum and the normalized graph, the emission peak shift is unchanged in 900 bends, and the change of the fluorescence intensity is not obvious and can be regarded irregularly. As shown in fig. 9, the composite ink can be directly used to implement a specific patterned drawing on a glass slide by a brush-pen printing process. As shown in fig. 10, the compound membrane may maintain a curved shape. As shown in fig. 11, the composite film can be prepared in a large area, and can realize a specific pattern of a thin film by a paper folding technique.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The polyvinyl alcohol-fluorenyl nanosheet composite film is characterized by being formed by blending a fluorenyl nanosheet and a polyvinyl alcohol aqueous solution, wherein the fluorenyl nanosheet is prepared by adding a surfactant into a fluorenyl organic small molecular compound; the fluorenyl organic small molecular compound is a molecule consisting of phenyl fluorene and pyrenyl, namely a PF-Py molecule, and has the following structural formula:
2. the polyvinyl alcohol-fluorenyl nanosheet composite film of claim 1, wherein the doping weight ratio of the fluorenyl nanosheets in the blending process of the fluorenyl nanosheets and the aqueous polyvinyl alcohol solution is 5%, namely the fluorenyl nanosheets: aqueous polyvinyl alcohol =5: 100.
3. The polyvinyl alcohol-fluorenyl nanosheet composite film of claim 2, wherein the aqueous polyvinyl alcohol solution has a polyvinyl alcohol content of 8 wt%.
4. A polyvinyl alcohol-fluorenyl nanoplatelet composite film according to any of claims 1-3 wherein the surfactant is a polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer.
5. A preparation method of the polyvinyl alcohol-fluorenyl nanosheet composite film as set forth in claim 4, characterized by comprising the steps of:
s1, placing the fluorenyl nano-sheet in a bottle filled with magnetons for dispersion by using deionized water;
s2, stirring for 3-5h for uniform dispersion;
s3, transferring the polyvinyl alcohol aqueous solution into the dispersion liquid obtained in the step S2, and stirring at normal temperature to obtain a white dispersion liquid;
s4, vacuumizing the white dispersion liquid in a freeze dryer for 30 min;
s5, dropping the dispersion obtained in the step S4 on a glass substrate which has been processed in advance, and then placing the glass substrate on a hot plate to evaporate and form a film.
6. The preparation method of the polyvinyl alcohol-fluorenyl nanosheet composite film as defined in claim 5, wherein the preparation method of the fluorenyl nanosheet comprises the steps of:
step S101, preparing a surfactant solution;
step S102, dissolving a fluorenyl organic small molecular compound in tetrahydrofuran to prepare a sample solution, and then quickly injecting the sample solution into the surfactant solution obtained in the step S101 within 1-2 seconds to stir;
s103, standing at room temperature after stirring is completed to obtain a nano sheet material which completely grows; then washing and cleaning the surfactant through centrifugation to obtain a fluorenyl nanosheet;
and S104, drying the fluorenyl nanosheet obtained in the step S103, and transferring the dried fluorenyl nanosheet to a sample bottle for later use.
7. The method for preparing the polyvinyl alcohol-fluorenyl nanosheet composite film as defined in claim 6, wherein the heating plate temperature of step S5 is from 35 ℃ to 45 ℃.
8. The method for preparing a polyvinyl alcohol-fluorenyl nanosheet composite film according to claim 6 or 7, wherein the surfactant solution is at a concentration of 1 mg/mL in step S101.
9. The method for preparing a polyvinyl alcohol-fluorenyl nanosheet composite film according to claim 8, wherein the sample solution is at a concentration of 8 mM of material in step S102.
10. The method for preparing a polyvinyl alcohol-fluorenyl nanosheet composite film as defined in claim 9, wherein the standing time in step S103 is 48 hours; the rotation speed of the centrifugal washing in step S103 does not exceed 5000 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497567.9A CN114773754B (en) | 2022-05-09 | 2022-05-09 | Polyvinyl alcohol-fluorenyl nano-sheet composite film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497567.9A CN114773754B (en) | 2022-05-09 | 2022-05-09 | Polyvinyl alcohol-fluorenyl nano-sheet composite film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114773754A true CN114773754A (en) | 2022-07-22 |
| CN114773754B CN114773754B (en) | 2023-09-26 |
Family
ID=82436617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210497567.9A Active CN114773754B (en) | 2022-05-09 | 2022-05-09 | Polyvinyl alcohol-fluorenyl nano-sheet composite film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114773754B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116120626A (en) * | 2023-02-02 | 2023-05-16 | 江西师范大学 | Method for mediating macroscopic foam evaporation surface deposition based on coffee ring effect |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110034628A1 (en) * | 2006-05-11 | 2011-02-10 | Basf Coatings Ag | Branched polyols containing on average two or more hydroxyl groups per molecule,their preparation and use |
| CN103214900A (en) * | 2013-04-24 | 2013-07-24 | 南京邮电大学 | Waste-based organic nano-ink applied to film device process, and preparation and application of waste-based organic nano-ink |
| CN105254466A (en) * | 2015-10-27 | 2016-01-20 | 南京中电熊猫液晶显示科技有限公司 | Pyrene organic material, preparing method and application of pyrene organic material |
| WO2016015658A1 (en) * | 2014-08-01 | 2016-02-04 | 广东阿格蕾雅光电材料有限公司 | Carbon nanotube-macromolecule composite layered transparent flexible electrode and preparation method therefor |
| US20160046773A1 (en) * | 2014-08-18 | 2016-02-18 | Chung Yuan Christian University | Transparent Gas Barrier Composite Film And Its Preparation Method |
| JP2017052681A (en) * | 2015-09-11 | 2017-03-16 | 株式会社豊田中央研究所 | Nanosheet-containing dispersion, nanosheet-containing composite, and production methods thereof |
| CN109651328A (en) * | 2019-01-14 | 2019-04-19 | 南京邮电大学 | Pyrenyl loop coil aromatic hydrocarbons organic nanocrystal material and its preparation method and application |
| US20200024406A1 (en) * | 2017-03-22 | 2020-01-23 | National University Of Singapore | Fluorescent porous organic nanosheets for chemical sensing |
| CN111864532A (en) * | 2020-07-03 | 2020-10-30 | 太原理工大学 | Surface protection layer for improving stability of perovskite nanosheet laser and preparation method thereof |
| CN112876712A (en) * | 2021-01-21 | 2021-06-01 | 北京理工大学 | MXene-based flexible polyvinyl alcohol electromagnetic shielding composite film and preparation method thereof |
| US20210206894A1 (en) * | 2020-01-07 | 2021-07-08 | Snu R&Db Foundation | 2-dimensional polymer nanosheets and method for morphologically tunable preparing the same |
| CN113413917A (en) * | 2021-06-02 | 2021-09-21 | 贵州师范大学 | Preparation and application of Tb-MOF nanosheet based on pyrenetetracarboxylic acid |
| CN113789170A (en) * | 2021-06-24 | 2021-12-14 | 北京化工大学 | Ammonia gas sensing film composed of HPTS and hydrotalcite nanosheets and preparation method thereof |
| WO2022056974A1 (en) * | 2020-09-18 | 2022-03-24 | 华侨大学 | Insulating polyvinyl alcohol composite heat-conducting film and preparation method therefor |
-
2022
- 2022-05-09 CN CN202210497567.9A patent/CN114773754B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110034628A1 (en) * | 2006-05-11 | 2011-02-10 | Basf Coatings Ag | Branched polyols containing on average two or more hydroxyl groups per molecule,their preparation and use |
| CN103214900A (en) * | 2013-04-24 | 2013-07-24 | 南京邮电大学 | Waste-based organic nano-ink applied to film device process, and preparation and application of waste-based organic nano-ink |
| WO2016015658A1 (en) * | 2014-08-01 | 2016-02-04 | 广东阿格蕾雅光电材料有限公司 | Carbon nanotube-macromolecule composite layered transparent flexible electrode and preparation method therefor |
| US20160046773A1 (en) * | 2014-08-18 | 2016-02-18 | Chung Yuan Christian University | Transparent Gas Barrier Composite Film And Its Preparation Method |
| JP2017052681A (en) * | 2015-09-11 | 2017-03-16 | 株式会社豊田中央研究所 | Nanosheet-containing dispersion, nanosheet-containing composite, and production methods thereof |
| CN105254466A (en) * | 2015-10-27 | 2016-01-20 | 南京中电熊猫液晶显示科技有限公司 | Pyrene organic material, preparing method and application of pyrene organic material |
| US20200024406A1 (en) * | 2017-03-22 | 2020-01-23 | National University Of Singapore | Fluorescent porous organic nanosheets for chemical sensing |
| CN109651328A (en) * | 2019-01-14 | 2019-04-19 | 南京邮电大学 | Pyrenyl loop coil aromatic hydrocarbons organic nanocrystal material and its preparation method and application |
| US20210206894A1 (en) * | 2020-01-07 | 2021-07-08 | Snu R&Db Foundation | 2-dimensional polymer nanosheets and method for morphologically tunable preparing the same |
| CN111864532A (en) * | 2020-07-03 | 2020-10-30 | 太原理工大学 | Surface protection layer for improving stability of perovskite nanosheet laser and preparation method thereof |
| WO2022056974A1 (en) * | 2020-09-18 | 2022-03-24 | 华侨大学 | Insulating polyvinyl alcohol composite heat-conducting film and preparation method therefor |
| CN112876712A (en) * | 2021-01-21 | 2021-06-01 | 北京理工大学 | MXene-based flexible polyvinyl alcohol electromagnetic shielding composite film and preparation method thereof |
| CN113413917A (en) * | 2021-06-02 | 2021-09-21 | 贵州师范大学 | Preparation and application of Tb-MOF nanosheet based on pyrenetetracarboxylic acid |
| CN113789170A (en) * | 2021-06-24 | 2021-12-14 | 北京化工大学 | Ammonia gas sensing film composed of HPTS and hydrotalcite nanosheets and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| YIN-XIANG LI,ET AL.: "Supramolecular steric hindrance effect on morphologies and photophysical behaviors of spirocyclic aromatic hydrocarbon nanocrystals", 《COMMUNICATION》, pages 5158 - 5162 * |
| 张晋美;黎厚斌;: "芘荧光材料的研究进展", 包装工程, no. 07, pages 114 - 121 * |
| 田景阳;朱琦;张;黄崇杏;杨崎峰;: "纳米微晶纤维/聚乙烯醇复合薄膜的制备及性能", 造纸科学与技术, no. 03, pages 26 - 28 * |
| 颜承恩;周骏;李星;束磊;马亚楠;: "金纳米粒子掺杂DNA-CTMA-DPFP薄膜的表面增强拉曼散射特性", 发光学报, no. 03, pages 135 - 140 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116120626A (en) * | 2023-02-02 | 2023-05-16 | 江西师范大学 | Method for mediating macroscopic foam evaporation surface deposition based on coffee ring effect |
| CN116120626B (en) * | 2023-02-02 | 2024-03-01 | 江西师范大学 | Method for mediating macroscopic foam evaporation surface deposition based on coffee ring effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114773754B (en) | 2023-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110459680B (en) | Perovskite solar cell and preparation method thereof | |
| CN107895759B (en) | Preparation method of efficient perovskite solar cell with carbon quantum dots doped with PCBM electron transport layer | |
| CN109638158B (en) | Flexible organic thin film transistor and preparation method thereof | |
| CN108101381B (en) | Bismuth-based halide perovskite nanosheet and preparation method thereof | |
| CN108832002B (en) | Perovskite solar cell based on PVA (polyvinyl alcohol) modified hole transport layer | |
| Chao et al. | GaAs nanowire/poly (3, 4-ethylenedioxythiophene): poly (styrenesulfonate) hybrid solar cells with incorporating electron blocking poly (3-hexylthiophene) layer | |
| CN114773754A (en) | Polyvinyl alcohol-fluorenyl nanosheet composite film and preparation method thereof | |
| CN107093641A (en) | A kind of thin film solar cell based on inorganic flat hetero-junctions and preparation method thereof | |
| CN108511133B (en) | Preparation method of transfer-free high-cohesiveness metal grid transparent electrode | |
| US20210036250A1 (en) | Cathode Interface Modification Material Composition, Preparation Method and Use Thereof | |
| CN103258960A (en) | Preparation method of organic thin film transistor | |
| CN102604048B (en) | Conjugated polymer photoelectric material containing amine oxide groups and application thereof | |
| Niu et al. | Enhancing the performance of perovskite solar cells via interface modification | |
| CN106277822A (en) | Silicon nanometer column array material and preparation method thereof | |
| CN108365103A (en) | A kind of application of boracic hole dopant in perovskite solar cell hole transmission layer | |
| CN108832007B (en) | Preparation method of perovskite and semiconductor type silicon hybrid solar cell | |
| CN110540543A (en) | Cis-lattice Cis-Grid organic nano material and preparation method and application thereof | |
| Cao et al. | Polysiloxane–poly (vinyl alcohol) composite dielectrics for high-efficiency low voltage organic thin film transistors | |
| CN104851978A (en) | Preparation method for micromolecule organic semiconductor single crystals | |
| CN103579503A (en) | Method for utilizing photo-crosslinking polymers to conduct thin film packaging on organic electronic device | |
| Zhang et al. | Fabrication and physical properties of self-assembled ultralong polymer/small molecule hybrid microstructures | |
| Somani | Pressure sensitive multifunctional solar cells using carbon nanotubes | |
| WO2013008579A1 (en) | Method for manufacturing organic thin film solar cell | |
| CN111276613B (en) | Woven fibrous organic photoelectric field effect transistor and preparation method and application thereof | |
| CN114122258A (en) | Celestite blue film composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |