CN110606969B - Method for patterning surface through AIE material - Google Patents
Method for patterning surface through AIE material Download PDFInfo
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- CN110606969B CN110606969B CN201910944634.5A CN201910944634A CN110606969B CN 110606969 B CN110606969 B CN 110606969B CN 201910944634 A CN201910944634 A CN 201910944634A CN 110606969 B CN110606969 B CN 110606969B
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- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
- C08J7/065—Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article
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- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
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- 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
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
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Abstract
The invention discloses a method for patterning a surface through an AIE material, which comprises the following steps: preparing a PDMS elastic substrate; preparing a mixed solution of tetra- (4-bromobenzene) ethylene and chloroform with the mass fraction of 1 to 5 percent; carrying out plasma treatment on the cut PDMS elastic substrate for 30 seconds; the prepared mixed solution is spin-coated on a PDMS elastic substrate which is processed by plasma, and the amount of spin-coating is 50 mu L/cm2Counting; and (3) putting the PDMS elastic substrate subjected to spin coating into an oven, and heating for 30min at 70 ℃ to obtain the PDMS with fluorescent wrinkle appearance under ultraviolet light. The invention successfully prepares the fluorescent surface patterned PDMS by using a simple and rapid operation mode, thereby avoiding complex and tedious operation steps, long preparation time and high equipment and experiment consumable loss.
Description
Technical Field
The invention relates to the technical field of preparation of polymer films with fluorescence.
Background
The pressure is ubiquitous and is of great importance to the manufacturing industry. Due to the ultra-sensitive mechanical response body of the tetra- (4-bromobenzene) ethylene (TBPE) emission with the aggregation-induced emission characteristic, the visualization of the stress/strain distribution of the pure organic fluorescent material on the sample is realized. The fluorescence mapping method has the advantages of simple setting, real-time performance, full field, on-site performance, intuition and the like. Surface analysis shows that TBPE can form a fluorescent uniform crystalline film on the surface of PDMS, and the film is broken into amorphous fragments under the action of wrinkling. Thus, the invisible information of the stress/strain distribution of the wrinkles is converted into a visible fluorescence signal.
Disclosure of Invention
In view of the above prior art, the present invention proposes a method for patterning a surface by an AIE (aggregation induced emission) material. The invention successfully prepares the fluorescent surface patterned PDMS by using a simple and rapid operation mode, thereby avoiding complex and tedious operation steps, long preparation time and high equipment and experiment consumable loss.
In order to solve the above technical problem, the present invention provides a method for patterning a surface by an AIE material, comprising the following steps:
step one, preparing a PDMS elastic substrate for later use;
step two, preparing a mixed solution of tetra- (4-bromobenzene) ethylene and chloroform with the mass fraction of 1 to 5 percent, and marking as a mixed solution A;
thirdly, performing plasma treatment on the cut PDMS elastic substrate for 30 seconds;
step four, spin-coating the mixed solution A prepared in the step two on the PDMS elastic substrate treated in the step three, wherein the spin-coating amount is 50 mu L/cm2Counting;
and fifthly, putting the spin-coated PDMS elastic substrate into an oven, and heating for 30min at 70 ℃ to obtain the PDMS with fluorescent wrinkle appearance under ultraviolet light.
Further, according to the method for patterning the surface of the AIE material, the PDMS elastic substrate is prepared according to the following steps:
mixing the PDMS prepolymer with a cross-linking agent according to a mass ratio of 10:1, and stirring with a glass rod to form a uniform mixture; vacuum degassing the mixture for 1h, then pouring the mixture into a culture dish and uniformly distributing the mixture in the culture dish; and finally, putting the mixture into an oven, and heating and curing the mixture for 4 hours at the temperature of 70 ℃ to obtain the product.
In the fifth step of the method, PDMS with different fluorescence intensities can be obtained by adjusting the mass fraction.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a method for preparing a fluorescent polymer material with a patterned surface in a short time, which can prepare polymers with different fluorescence intensities by simply controlling mass fraction, has the characteristics of simplicity, quickness, easy observation and the like, avoids the defects of complex preparation process, expensive equipment, low efficiency and the like, and has potential application prospect in the field of stress strain visualization.
Drawings
FIG. 1 is a photograph of a pre-heated spin-coated tetra- (4-bromobenzene) vinyl on PDMS according to example 1 of the present invention under ultraviolet light;
FIG. 2 is a photograph of heated tetra- (4-bromobenzene) vinyl spin-coated on PDMS according to example 1 of the present invention under UV light.
FIG. 3 is an optical microscope photograph of the creped tetra- (4-bromobenzene) ethylene spin-coated on PDMS obtained in example 1 of the present invention.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, which are not intended to limit the invention in any way.
Example 1, preparation of PDMS with fluorescence intensity, comprising the following steps:
step one, preparing a PDMS elastic substrate, namely mixing a PDMS prepolymer and a cross-linking agent according to a mass ratio of 10:1, and stirring with a glass rod to form a uniform mixture; carrying out vacuum degassing treatment on the mixture of the PDMS prepolymer and the cross-linking agent for 1 h; pouring the mixture of the PDMS prepolymer and the cross-linking agent into a square culture dish and uniformly distributing the mixture in the culture dish; putting the mixture of the PDMS prepolymer and the cross-linking agent into an oven, and heating and curing for 4h at 70 ℃; the PDMS elastic substrate is obtained.
Step two, mixing tetra- (4-bromobenzene) ethylene and chloroform to prepare a mixed solution with the mass fraction of 5%;
step three, cutting the cured PDMS elastic substrate obtained in the step one into a square with the size of 1 square centimeter, and carrying out plasma treatment for 30 seconds;
step four: transferring 50 microliters of the mixed solution prepared in the second step by using a pipette, and spin-coating the mixed solution on a cut 1 square centimeter PDMS elastic substrate, as shown in FIG. 1;
step five: the PDMS elastic substrate after spin coating was placed in an oven and heated at 70 ℃ for 30min to obtain PDMS with a fluorescent wrinkle topography under uv light, as shown in fig. 2 and 3.
Example 2, PDMS having fluorescence intensity was prepared according to the same procedure as in example 1 except that the mixed solution in the second step was 1% by mass.
Example 3, PDMS having fluorescence intensity was prepared according to the same procedure as in example 1 except that the mixed solution in the second step was 3% by mass.
In conclusion, the invention mainly comprises the steps of spin-coating tetra- (4-bromobenzene) ethylene on a PDMS substrate, and heating and wrinkling the substrate to finally obtain the PDMS with the fluorescent surface patterning under the irradiation of ultraviolet light. The PDMS prepared in the above examples 1 to 3 was observed under ultraviolet light, and the mass fractions of the mixed solution of tetra- (4-bromobenzene) ethylene and chloroform used in the preparation process were different, and the fluorescence intensity was different, and the mass fraction of the mixed solution of tetra- (4-bromobenzene) ethylene and chloroform was high, and the fluorescence intensity of the PDMS with fluorescent wrinkle appearance finally obtained was strong.
While the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are illustrative only and not restrictive, and various modifications which do not depart from the spirit of the present invention and which are intended to be covered by the claims of the present invention may be made by those skilled in the art.
Claims (3)
1. A method of surface patterning by AIE material, comprising the steps of:
step one, preparing a PDMS elastic substrate for later use;
step two, preparing a mixed solution of tetra- (4-bromobenzene) ethylene and chloroform with the mass fraction of 1 to 5 percent, and marking as a mixed solution A;
thirdly, performing plasma treatment on the cut PDMS elastic substrate for 30 seconds;
step four, spin-coating the mixed solution A prepared in the step two on the PDMS elastic substrate treated in the step three, wherein the spin-coating amount is 50 mu L/cm2Counting;
and fifthly, putting the spin-coated PDMS elastic substrate into an oven, and heating for 30min at 70 ℃ to obtain the PDMS with fluorescent wrinkle appearance under ultraviolet light.
2. The method for surface patterning by AIE material of claim 1, wherein the PDMS elastic substrate is prepared by the following steps:
mixing the PDMS prepolymer with a cross-linking agent according to a mass ratio of 10:1, and stirring with a glass rod to form a uniform mixture; vacuum degassing the mixture for 1h, then pouring the mixture into a culture dish and uniformly distributing the mixture in the culture dish; and finally, putting the mixture into an oven, and heating and curing the mixture for 4 hours at the temperature of 70 ℃ to obtain the product.
3. The method for surface patterning with AIE material of claim 1, wherein the mass fraction is adjusted in step five to obtain PDMS with different fluorescence intensity.
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| CN201910944634.5A CN110606969B (en) | 2019-09-30 | 2019-09-30 | Method for patterning surface through AIE material |
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| CN201910944634.5A CN110606969B (en) | 2019-09-30 | 2019-09-30 | Method for patterning surface through AIE material |
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| CN111718509A (en) * | 2020-05-26 | 2020-09-29 | 北京科易达知识产权服务有限公司 | Near-infrared driven dynamic fluorescent fingerprint surface pattern and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680288A (en) * | 2018-03-27 | 2018-10-19 | 天津大学 | A method of utilizing the mechanical response of organic mechanoluminescence material tests mechanical part |
| CN108795413A (en) * | 2018-07-27 | 2018-11-13 | 福州大学 | A method of it solving ZnS based luminescent materials and meets water penalty |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680288A (en) * | 2018-03-27 | 2018-10-19 | 天津大学 | A method of utilizing the mechanical response of organic mechanoluminescence material tests mechanical part |
| CN108795413A (en) * | 2018-07-27 | 2018-11-13 | 福州大学 | A method of it solving ZnS based luminescent materials and meets water penalty |
Non-Patent Citations (3)
| Title |
|---|
| Effective Parameters for the Precise Control of Thin Film Buckling on Elastomeric Substrates;Seong-Min Ahn;《Bull. Korean Chem. Soc》;20101231;第31卷(第2期);全文 * |
| Supramolecular assembly of leaf-like fluorescent tetraphenylethylene through polymer-directed inter-locking;Neelam Gogoi;《Composites Communications》;20181130;第11卷;全文 * |
| 功能性图案化复合膜的制备及其性能研究;孟洁云;《中国优秀硕士学位论文全文数据库 工程科技I辑》;20180531;全文 * |
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Address after: 300452 Binhai Industrial Research Institute Campus of Tianjin University, No. 48 Jialingjiang Road, Binhai New Area, Tianjin Patentee after: Tianjin University Address before: 300350 Haijing garden, Haihe Education Park, Jinnan, Tianjin, 135, Tianjin University. Patentee before: Tianjin University |