CN108822829A - Polyvinyl alcohol transparent layer and its preparation method and application - Google Patents
Polyvinyl alcohol transparent layer and its preparation method and application Download PDFInfo
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- CN108822829A CN108822829A CN201810486425.6A CN201810486425A CN108822829A CN 108822829 A CN108822829 A CN 108822829A CN 201810486425 A CN201810486425 A CN 201810486425A CN 108822829 A CN108822829 A CN 108822829A
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- polyvinyl alcohol
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/58—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing copper, silver or gold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
- C09K11/7721—Aluminates
Abstract
The invention discloses polyvinyl alcohol transparent layers, belong to light reinforcing material technical field comprising the polyvinyl alcohol organic matter separation layer of bottom and the Silver nano-particle layer on upper layer, Silver nano-particle layer are the silver nano-grain dispersed through polyvinylpyrrolidone.The invention also discloses the application of preparation method and polyvinyl alcohol transparent layer in the enhancing of silver nano-grain light.Polyvinyl alcohol organic matter separation layer of the invention with a thickness of 2~12 μm, Silver nano-particle layer with a thickness of 3.5 μm~9 μm when, the emitted luminescence intensity highest of yellow fluorescent powder matrix can be made to increase to 1.77 times.
Description
Technical field
The invention belongs to light reinforcing material technical fields, and in particular to polyvinyl alcohol organic matter composite layer and preparation method thereof
And application.
Background technique
Noble metal nano particles（Au, Ag, Cu etc.）Surface plasma body resonant vibration enhancement effect attracted crowd in recent years
The sight of researcher, can reach thousands of times by the enhancing of surface local fields in more fields.Surface plasma is total
An important content is to keep noble metal nano particles and existed by the distance between light enhancing material surface in vibration enhancing work
Nano grade, generally several to tens nanometers.Optical quenching can closely occur very much, it is too far, do not have the effect of enhancing.
General researcher is depositing one by the particle outer cladding of light enhancing material or on enhanced substance film surface
Layer is with a thickness of nanoscale separation layer.However the more complicated technique or equipment of this need of work could be completed, for enterprise
For, this can reduce production efficiency, increase equipment funds investment.If separation layer can directly be coated on enhanced material surface,
This undoubtedly greatly reduces production cost, and common enterprise is made also directly to reach drop using surface plasma body resonant vibration enhancing
Low cost proposes high performance purpose again.Currently, for majority is isolated using inorganic between substance to be reinforced and silver nano-grain
Substance may need to be heat-treated in preparation process, this is not applicable for the material to be reinforced that organic matter is carrier.And
Organic matter is able to satisfy the production needs directly coated, without carrying out any heat treatment.
It is related to the researchs of metal nano-particle layer light enhancing in addition, most, and transmissivity higher there are visible reflectance
Lower problem, for example, depositing the metallic film that a layer thickness is tens to several hundred nanometers, gold on the surface to light enhancing material
Belong to film thickness and reach 100nm or more then without visible light-transmissive, therefore transmissivity is low, is unable to reach the purpose of dual light enhancing.
Summary of the invention
Goal of the invention：The purpose of the present invention is to provide polyvinyl alcohol transparent layers, effectively prevent the same of fluorescent quenching
When, fluorescence intensity can be made significantly to be enhanced, and transmissivity is high；Another object of the present invention is to provide preparation method, simply
And without carrying out any heat treatment；Another object of the present invention is to provide its application in the enhancing of silver nano-grain light.
Technical solution：For achieving the above object, the present invention adopts the following technical scheme that：
Polyvinyl alcohol transparent layer, the Silver nano-particle layer of polyvinyl alcohol organic matter separation layer and upper layer including bottom, institute
The Silver nano-particle layer stated is the silver nano-grain dispersed through polyvinylpyrrolidone.
The polyvinyl alcohol organic matter separation layer with a thickness of 2 μm~12 μm.
The Silver nano-particle layer with a thickness of 3.5 μm~9 μm.
The preparation method of the polyvinyl alcohol transparent layer, it is characterised in that：Polyvinyl alcohol is dissolved in 95 DEG C
Mixed liquor is obtained in water, then will mix drop-coated in enhancing matrix surface to light, the poly- of bottom can be obtained after water drying
Vinyl alcohol organic matter separation layer coats the silver nanoparticle solution dispersed through polyvinylpyrrolidone on bottom and obtains upper layer
Silver nano-particle layer.
The concentration of the mixed liquor is 2%~4%.
The concentration of the silver nanoparticle solution is 10~25mmol/L.
Application of the polyvinyl alcohol transparent layer in the enhancing of silver nano-grain light.
Invention mechanism：Polyvinyl alcohol transparent layer includes the polyvinyl alcohol organic matter separation layer of bottom and the Yin Na on upper layer
Rice grain layer, on the one hand, Nano silver grain need and luminescent material very close to, general several nanometers or tens nanometers away from
From, competence exertion light reinforcing effect, the polyvinyl alcohol organic matter separation layer that the present invention uses can be formed with the film of crack defect,
The silver nanoparticle solution on upper layer is penetrated into, silver particles relatively luminous substrate layer is made, to generate light enhancing.It is another
Aspect, the silver nano-grain on upper layer are distributed in ethyl alcohol with polyvinylpyrrolidone, and the transparency is good, conducive to the transmission of light,
So that can also obtain higher luminous intensity in Silver nano-particle layer side, while the low silver solution that is conducive to of viscosity penetrates into polyvinyl alcohol
In organic matter separation layer.Silver particles are present in polyvinylpyrrolidone organic film simultaneously, can be protected.
Beneficial effect：Compared with prior art, polyvinyl alcohol transparent layer of the invention, using polyvinyl alcohol water solution
Drop coating polyvinyl alcohol organic matter separation layer, and the silver nanoparticle using silver/polyvinylpyrrolidone ethanol solution drop coating upper layer
Stratum granulosum, wetability is good after drop coating, can form the good thin layer of uniformity, effectively prevent the generation of fluorescent quenching, and keep fluorescence strong
Degree is significantly enhanced；Polyvinyl alcohol transparent layer preparation method of the present invention is simple, without carrying out any heat treatment, cost
It is cheap, and transmissivity is high, so that can also obtain higher luminous intensity in Silver nano-particle layer side；Polyvinyl pyrrole of the present invention
Application of the alkanone organic matter composite layer in the enhancing of silver nano-grain light.
Detailed description of the invention
Fig. 1 is influence of the Silver nano-particle layer thickness to transmissivity；
Fig. 2 is influence of the silver concentration to Silver nano-particle layer absorption value；
Fluorescent quenching when Fig. 3 is no separation layer；
Fig. 4 is the influence that polyvinyl alcohol separating layer thickness enhances light；
Fig. 5 is the influence that Silver nano-particle layer thickness enhances light；
Fig. 6 is separation layer thickness when being 9 μm, and upper layer Silver nano-particle layer is with a thickness of 7 μm of sample section shape appearance figure；
Fig. 7 is separation layer thickness when being 9 μm, and upper layer Silver nano-particle layer is with a thickness of 7 μm of sample section Ag content change diagram.
Specific embodiment
The present invention is described further in the following with reference to the drawings and specific embodiments.
Polyvinyl alcohol transparent layer, the silver nano-grain of polyvinyl alcohol organic matter separation layer and upper layer including bottom
Layer, polyvinyl alcohol organic matter separation layer with a thickness of 2 μm~12 μm；Silver nano-particle layer is to disperse through polyvinylpyrrolidone
Silver nano-grain, Silver nano-particle layer with a thickness of 3.5 μm~9 μm.
Polyvinyl alcohol is dissolved in 95 DEG C of water and obtains mixed liquor, so by the preparation method of polyvinyl alcohol transparent layer
Drop-coated will be mixed afterwards in enhancing matrix surface to light, and the polyvinyl alcohol organic matter isolation of bottom can be obtained after water drying
Layer coats the silver nanoparticle solution dispersed through polyvinylpyrrolidone on bottom and obtains the Silver nano-particle layer on upper layer.
Wherein, the concentration of mixed liquor is 2%-4%.The concentration of silver nanoparticle solution is 10~25mmol/L.
Application of the polyvinyl alcohol transparent layer in the enhancing of silver nano-grain light.
Polyvinyl alcohol organic matter separation layer can make Silver nano-particle layer increase to 1.77 to the photo-enhancement effect of yellow fluorescent powder
Times.
Embodiment 1
By yellow fluorescent powder YAG:Ce3+It is added in 3% polyvinyl alcohol water solution and is uniformly dispersed, the concentration of fluorescent powder is 1.25g/
L carries out drop coating on the glass sheet, prepares organic matter-fluorescent powder base layer, after drying with a thickness of 13 μm.Nano-Ag particles
Solution uses partial size for the Argent grain of 20~30nm, with polyvinylpyrrolidone dispersing agent ultrasonic disperse in ethanol solution, gathers
The concentration of vinylpyrrolidone is 50g/L, and nano-Ag particles concentration is 1.62g/L（15mmol/L）, the ultrasonic disperse time is
20min.It is if separation layer is not added, the direct drop coating of nano-Ag particles solution dispersed through polyvinylpyrrolidone is glimmering in organic matter-
Light powder matrix layer surface simultaneously dries obtained Silver nano-particle layer（5μm）, it may occur that fluorescent quenching（Fig. 3）.In organic matter-fluorescent powder
Added thickness between base layer and Silver nano-particle layer as 2 μm of polyvinyl alcohol separating layer, separation layer use concentration for 3% poly- second
Enol water-soluble drop-coated drying is made, and finds through detection, and the light enhancement factor launch wavelength 525nm at is 1.51, as Fig. 4 with
Shown in table 1.
The influence that 1 separation layer thickness of table enhances light
| Separation layer thickness（μm） | 2 | 3 | 6 | 9 | 12 |
| Enhancement factor | 1.51 | 1.44 | 1.57 | 1.64 | 1.49 |
Embodiment 2
By yellow fluorescent powder YAG:Ce3+It is added in 3% polyvinyl alcohol water solution and is uniformly dispersed, the concentration of fluorescent powder is 1.25g/
L carries out drop coating on the glass sheet, prepares organic matter-fluorescent powder base layer with a thickness of 13 μm.It is 3% in its surface drop coating concentration
Polyvinyl alcohol water solution, the polyvinyl alcohol organic matter separation layer with a thickness of 3 μm is obtained after drying.In last drop coating embodiment 1
Silver nanoparticle solution, prepare with a thickness of 5 μm of Silver nano-particle layer.It is found through detection, the light at launch wavelength 525nm
Enhancement factor is 1.44, as shown in Figure 4 and Table 1.
Embodiment 3
By yellow fluorescent powder YAG:Ce3+It is added in 3% polyvinyl alcohol water solution and is uniformly dispersed, the concentration of fluorescent powder is 1.25g/
L carries out drop coating on the glass sheet, prepares organic matter-fluorescent powder base layer with a thickness of 13 μm.It is 3% in its surface drop coating concentration
Polyvinyl alcohol water solution, the polyvinyl alcohol separating layer with a thickness of 6 μm is obtained after drying.Yin Na in last drop coating embodiment 1
Rice grain solution prepares the Silver nano-particle layer with a thickness of 5 μm.Found through detection, light launch wavelength 525nm at enhance because
Son is 1.57, as shown in Figure 4 and Table 1.
Embodiment 4
By yellow fluorescent powder YAG:Ce3+It is added in 3% polyvinyl alcohol water solution and is uniformly dispersed, the concentration of fluorescent powder is 1.25g/
L carries out drop coating on the glass sheet, prepares organic matter-fluorescent powder base layer with a thickness of 13 μm.It is 3% in its surface drop coating concentration
Polyvinyl alcohol water solution, the polyvinyl alcohol separating layer with a thickness of 9 μm is obtained after drying.Yin Na in last drop coating embodiment 1
Rice grain solution prepares the Silver nano-particle layer with a thickness of 5 μm.Found through detection, light launch wavelength 525nm at enhance because
Son is 1.64, as shown in Figure 4 and Table 1.
Embodiment 5
By yellow fluorescent powder YAG:Ce3+It is added in 3% polyvinyl alcohol water solution and is uniformly dispersed, the concentration of fluorescent powder is 1.25g/
L carries out drop coating on the glass sheet, prepares organic matter-fluorescent powder base layer with a thickness of 13 μm.It is 3% in its surface drop coating concentration
Polyvinyl alcohol water solution, the polyvinyl alcohol separating layer with a thickness of 12 μm is obtained after drying.Yin Na in last drop coating embodiment 1
Rice grain solution prepares the Silver nano-particle layer with a thickness of 5 μm.Found through detection, light launch wavelength 525nm at enhance because
Son is 1.49, as shown in Figure 4 and Table 1.
Embodiment 6
By yellow fluorescent powder YAG:Ce3+It is added in 3% polyvinyl alcohol water solution and is uniformly dispersed, the concentration of fluorescent powder is 1.25g/
L.Drop coating is carried out on the glass sheet, and organic matter-fluorescent powder base layer with a thickness of 13 μm is made after drying.Separation layer is poly- using 3%
The drying of vinyl alcohol aqueous solution drop coating is made, with a thickness of 9 μm.Silver nanoparticle solution in last drop coating embodiment 1, prepares thickness
For 3.5~10.5 μm of Silver nano-particle layer.Find there is significant light enhancing effect within the scope of entire wavelength measurement through detection
It answers, as shown in figure 5, the light enhancement factor at fluorescence emission wavelengths 525nm is as shown in table 2.
The influence that 2 Silver nano-particle layer thickness of table enhances light
| Silver nano-particle layer thickness（μm） | 3.5 | 5 | 7 | 9 | 10.5 |
| Enhancement factor | 1.44 | 1.64 | 1.77 | 1.70 | 1.04 |
Fig. 1：It shows when silver nanoparticle solution concentration is 15mmol/L, shadow of the Silver nano-particle layer thickness to transmissivity
It rings.When it is with a thickness of 3.5 μm~9 μm, 80% or more is reached to the transmissivity of the visible above light of wavelength 500nm, this makes in silver
Nano-particle layer side can also obtain higher fluorescence intensity, can be used for realizing that dual light enhances.
Fig. 2：Show that the preferable concentration range of silver nano-grain in the solution is 10~25mmol/L, concentration is
Absorption peak is most strong when 20mmol/L, but with concentration be 15mmol/L when absorption peak difference it is little, be based on Cost And Performance
Comprehensively consider, select 15mmol/L as optimal silver nano-grain concentration.
Fig. 6：Polyvinyl alcohol organic matter separation layer can form crack defect after water flash baking, in some regions, so that
The silver nanoparticle solution on upper layer can penetrate into, and make silver particles relatively luminous substrate layer, to generate light enhancing.
Fig. 7：Due to measuring upper layer Silver nano-particle layer with a thickness of 7 μm, it can be seen that the amount of silver is in silver nano-grain in Fig. 7
Highest in layer, and concentration decline is more in separation layer, illustrates that nano-Ag particles have in a small amount of crack defect for penetrating into polyvinyl alcohol,
Play the role of light enhancing.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, and the present invention is also and unlimited
In the example above, for those skilled in the art, the invention may be variously modified and varied.It is all of the invention
Within spirit and spirit, any modification, equivalent replacement, improvement and so on should belong to claim model of the invention
It encloses.
Claims (7)
1. polyvinyl alcohol transparent layer, it is characterised in that：The silver of polyvinyl alcohol organic matter separation layer and upper layer including bottom
Nano-particle layer, the Silver nano-particle layer are the silver nano-grain dispersed through polyvinylpyrrolidone.
2. polyvinyl alcohol transparent layer according to claim 1, it is characterised in that：The polyvinyl alcohol organic matter every
Absciss layer with a thickness of 2 μm~12 μm.
3. polyvinyl alcohol transparent layer according to claim 1, it is characterised in that：The thickness of the Silver nano-particle layer
Degree is 3.5 μm~9 μm.
4. the preparation method of polyvinyl alcohol transparent layer described in any one of -3 according to claim 1, it is characterised in that：
Polyvinyl alcohol is dissolved in 95 DEG C of water and obtains mixed liquor, then will mix drop-coated in enhancing matrix surface to light, to water
The polyvinyl alcohol organic matter separation layer that bottom can be obtained after drying coats the silver dispersed through polyvinylpyrrolidone on bottom
Nanoparticles solution obtains the Silver nano-particle layer on upper layer.
5. the preparation method of polyvinyl alcohol transparent layer according to claim 4, it is characterised in that：The mixed liquor
Concentration be 2%~4%.
6. the preparation method of polyvinyl alcohol transparent layer according to claim 4, it is characterised in that：The silver nanoparticle
The concentration of particle solution is 10~25mmol/L.
7. application of the polyvinyl alcohol transparent layer described in claim 1 in the enhancing of silver nano-grain light.
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| CN201810486425.6A CN108822829B (en) | 2018-05-21 | 2018-05-21 | Polyvinyl alcohol transparent composite layer and preparation method and application thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031566A (en) * | 2010-09-20 | 2011-04-27 | 哈尔滨工业大学 | All-organic one-dimensional photonic crystal based on surface plasma effect and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031566A (en) * | 2010-09-20 | 2011-04-27 | 哈尔滨工业大学 | All-organic one-dimensional photonic crystal based on surface plasma effect and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| SONG JUAN等: "Tuning local surface plasmon resonance of silver and photoluminescence intensity enhancement by adding copper", 《JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS》 * |
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Application publication date: 20181116 Assignee: JIANGSU CHNV INSTRUMENT CONTROL ENGINEERING Co.,Ltd. Assignor: YANCHENG INSTITUTE OF TECHNOLOGY Contract record no.: X2022980028662 Denomination of invention: PVA transparent composite layer and its preparation method and application Granted publication date: 20201124 License type: Common License Record date: 20221230 Application publication date: 20181116 Assignee: TUPING MACHINERY (JIANGSU) CO.,LTD. Assignor: YANCHENG INSTITUTE OF TECHNOLOGY Contract record no.: X2022980028663 Denomination of invention: PVA transparent composite layer and its preparation method and application Granted publication date: 20201124 License type: Common License Record date: 20221230 Application publication date: 20181116 Assignee: Xingtai energy technology (Yancheng) Co.,Ltd. Assignor: YANCHENG INSTITUTE OF TECHNOLOGY Contract record no.: X2022980028660 Denomination of invention: PVA transparent composite layer and its preparation method and application Granted publication date: 20201124 License type: Common License Record date: 20221230 |