CN107151340A - A kind of photonic crystal hydrogel thin film and its preparation and application - Google Patents
A kind of photonic crystal hydrogel thin film and its preparation and application Download PDFInfo
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- CN107151340A CN107151340A CN201710493382.XA CN201710493382A CN107151340A CN 107151340 A CN107151340 A CN 107151340A CN 201710493382 A CN201710493382 A CN 201710493382A CN 107151340 A CN107151340 A CN 107151340A
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- photonic crystal
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- 239000004038 photonic crystal Substances 0.000 title claims abstract description 132
- 239000000017 hydrogel Substances 0.000 title claims abstract description 114
- 239000010409 thin film Substances 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 43
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 144
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000002105 nanoparticle Substances 0.000 claims abstract description 56
- 239000000499 gel Substances 0.000 claims abstract description 43
- 239000002245 particle Substances 0.000 claims abstract description 43
- 241000549556 Nanos Species 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 239000010408 film Substances 0.000 claims description 108
- 239000013078 crystal Substances 0.000 claims description 57
- 239000000243 solution Substances 0.000 claims description 50
- 239000002243 precursor Substances 0.000 claims description 40
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 30
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical class OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 26
- 230000004044 response Effects 0.000 claims description 25
- 238000007711 solidification Methods 0.000 claims description 24
- 230000008023 solidification Effects 0.000 claims description 24
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 150000001299 aldehydes Chemical class 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 17
- 239000000725 suspension Substances 0.000 claims description 15
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 12
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical compound [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 claims description 11
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 11
- 238000007654 immersion Methods 0.000 claims description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 7
- 229920002866 paraformaldehyde Polymers 0.000 claims description 7
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 239000004743 Polypropylene Substances 0.000 claims 1
- 239000008098 formaldehyde solution Substances 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 241000894007 species Species 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 14
- 230000008859 change Effects 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000003999 initiator Substances 0.000 description 7
- 238000005457 optimization Methods 0.000 description 7
- 238000000985 reflectance spectrum Methods 0.000 description 7
- 238000011895 specific detection Methods 0.000 description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 6
- 229910001882 dioxygen Inorganic materials 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 6
- 238000002604 ultrasonography Methods 0.000 description 6
- 238000001291 vacuum drying Methods 0.000 description 6
- 125000003368 amide group Chemical group 0.000 description 4
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 108010025899 gelatin film Proteins 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000006194 liquid suspension Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 239000004472 Lysine Substances 0.000 description 1
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 1
- 206010028767 Nasal sinus cancer Diseases 0.000 description 1
- 208000002454 Nasopharyngeal Carcinoma Diseases 0.000 description 1
- 206010061306 Nasopharyngeal cancer Diseases 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002085 enols Chemical class 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 208000032839 leukemia Diseases 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 201000011216 nasopharynx carcinoma Diseases 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- QLNJFJADRCOGBJ-UHFFFAOYSA-N propionamide Chemical compound CCC(N)=O QLNJFJADRCOGBJ-UHFFFAOYSA-N 0.000 description 1
- 229940080818 propionamide Drugs 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000011540 sensing material Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/02—Chemical treatment or coating of shaped articles made of macromolecular substances with solvents, e.g. swelling agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
-
- 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
- C08J2333/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/24—Homopolymers or copolymers of amides or imides
- C08J2333/26—Homopolymers or copolymers of acrylamide or methacrylamide
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a kind of photonic crystal hydrogel thin film and its preparation and application, the wherein photonic crystal hydrogel thin film includes polyacrylamide gel and the Fe being distributed in the polyacrylamide gel3O4@C nano particles, wherein the Fe3O4@C nanos particle is Fe3O4Surface coating has the nano-particle of C-material, the Fe3O4@C nanos particle is in catenation, the Fe along a direction in the polyacrylamide gel3O4Concentration of the@C nanos particle in the photonic crystal hydrogel thin film is 1~50mg/mL.The present invention passes through species, size and its distribution mode to doping particle crucial in photonic crystal hydrogel thin film, and corresponding preparation method is improved, the problem of formaldehyde examination is expensive and cumbersome is can effectively solve the problem that compared with prior art, and the detection for formaldehyde in solution provides new way.
Description
Technical field
The invention belongs to photon crystal material field, more particularly, to a kind of photonic crystal hydrogel thin film and its system
It is standby with application, the photonic crystal hydrogel thin film bore hole is visible and with specific formaldehyde response.
Background technology
Photonic crystal is the micro-structural of the medium period arrangement with differing dielectric constant.Photonic crystal it is main
Feature is forbidden photon band, can selectively make the light of some wave band by and prevent the light of other wavelength from passing through wherein；Therefore have
There is specific reflection wavelength, the visible schemochrome of bore hole is presented when reflection wavelength is in visible light wave range.Because photon is brilliant
The unique optical properties of body, it is respectively provided with potential application in the field such as display, coding, sensing, false proof and optical fiber.
Formaldehyde has been widely used in the fields such as weaving, chemical industry, indoor decoration, but it is a kind of typical indoor pollution
Thing, and one-level carcinogenic substance is divided into by international cancer research institution of the World Health Organization (IARC), research fully proves formaldehyde
Nasopharyngeal carcinoma, nasal sinus cancer, lung cancer and leukemia etc. can be triggered.At present, the detection method of formaldehyde mainly has infra-red sepectrometry, fluorescence spectrum
Method, AAS, electrochemical process etc..However, the above method needs to use the instrument of costliness or operation comparatively laborious, limit
The extensive use of these methods.SPIE (Proc.Spie.2014,9141,1-7) reports one kind by electricity
The method that the method for beamlet offset printing prepares the photon crystal film of formaldehyde response.This method is to cause light by gas
The variation in refractive of sub- crystal film carries out detection formaldehyde.But the refraction coefficient of gas with various is more or less the same, therefore should
Sensing material is without good specificity.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, it is an object of the invention to provide a kind of photonic crystal water-setting
Glue film and its preparation and application, wherein by the species of crucial doping particle in photonic crystal hydrogel thin film, size,
Global design, the reaction of each step of crucial flow process in addition and its distribution mode, and corresponding preparation method
Parameter Conditions (including the species of reactant with proportioning, reaction temperature and time etc.) are improved, and compared with prior art can
The problem of formaldehyde examination is expensive and cumbersome is effectively solved, the detection for formaldehyde in solution provides new way, the photon is brilliant
Body hydrogel thin film is cheap, has simple to operate, and the photonic crystal hydrogel during open hole detection applied to formaldehyde
Film PARA FORMALDEHYDE PRILLS(91,95) has good specificity, and detection accuracy is high.
To achieve the above object, according to one aspect of the present invention there is provided a kind of photonic crystal hydrogel thin film, it is special
Levy and be, including polyacrylamide gel and the Fe that is distributed in the polyacrylamide gel3O4@C nano particles, wherein institute
State Fe3O4@C nanos particle is Fe3O4Surface coating has the nano-particle of C-material, the Fe3O4@C nanos particle is described poly- third
Along a direction in catenation, the Fe in acrylamide gel3O4@C nanos particle is dense in the photonic crystal hydrogel thin film
Spend for 1~50mg/mL.
As present invention further optimization, the Fe3O4The particle diameter of@C nano particles is 100~180nm.
It is another aspect of this invention to provide that the invention provides a kind of preparation method of photonic crystal hydrogel thin film, its
It is characterised by, comprises the following steps：
(1) preparation of photonic crystal gel precursor solution：By Fe3O4The double propylene of@C nanos particle, acrylamide, methene
Acid amides and light trigger are dispersed in organic solvent, obtain photonic crystal Gel Precursor suspension；Wherein, every milliliter of institute
State and contain the Fe in photonic crystal Gel Precursor suspension3O41~50mg of@C nano particles, the acrylamide 100~
1000mg, the 1~200mg of methylene diacrylamide, and the 1~20mg of light trigger；
(2) preparation of photonic crystal gel laminated film：Before the photonic crystal gel that will be obtained in the step (1)
Drive the uniform film that liquid suspension is paved into 150~450 μ m-thicks；Then, the film is placed in 100~1000 Gausses (Gs) magnetic field
Middle stewing process；Then, with ultraviolet light, the film makes presoma solidification generation polyacrylamide therein, so as to be tied
The photonic crystal gel laminated film that structure is fixed；
(3) by the photonic crystal gel laminated film obtained in the step (2) immersion in aqueous, institute is removed
Organic solvent is stated, it is can obtain photonic crystal hydrogel thin film after being fully swelled.
As present invention further optimization, in the step (2), the organic solvent is ethylene glycol.
It is by the photonic crystal Gel Precursor suspension in the step (2) as present invention further optimization
It is paved into the uniform film of 300 μ m-thicks.
As present invention further optimization, in the step (2), by the film in the magnetic field stewing process
Afterwards, the film will develop the color；It is preferred that, the film is in blueness or green.
As present invention further optimization, the preparation method of photonic crystal hydrogel thin film, in addition to the step (1)
Described in Fe3O4The preparation process of@C nano particles：
Ferrocene dissolving is formed into solution in acetone, the concentration for making ferrocene in the solution is 5~15mg/mL；Then,
Hydrogen peroxide is added into the solution and obtains solvent thermal reaction precursor liquid, make the concentration of hydrogen peroxide in the precursor liquid for 0.01~
0.1mg/mL；Then, the precursor liquid is subjected to 48~72h of solvent thermal reaction at 150~220 DEG C；After reaction terminates, Magneto separate
Reaction product is obtained, then the Fe of cleaning simultaneously described in drying to obtain3O4@C nano particles.
According to another aspect of the present invention, the invention provides the application of above-mentioned photonic crystal hydrogel thin film, its feature
It is, applied to open hole detection.
As present invention further optimization, the open hole detection is the open hole detection for aldehyde material in solution；
It is preferred that, the aldehyde material includes at least one of formaldehyde, acetaldehyde and propionic aldehyde；
It is preferred that, the photonic crystal hydrogel thin film PARA FORMALDEHYDE PRILLS(91,95) concentration range contains first for 0.003~0.3mol/L's
The solution of aldehyde has response.
As present invention further optimization, the open hole detection is carried out under alkaline environment；It is preferred that, the alkali
Property environment is specially 1~20mg/mL of concentration Na2CO3The aqueous solution.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) the hydrogel photonic crystal film that the present invention is provided can react in alkaline solution with formaldehyde, only need to observe thin
The schemochrome of film, the content with regard to that can detect formaldehyde in solution is suitable for open hole detection, therefore the film has formaldehyde in solution
Response.
(2) the hydrogel photonic crystal film that the present invention is provided has simple, economy, specific detection, stability height etc.
Advantage.
(3) the hydrogel photonic crystal film that the present invention is provided, its preparation time is short, and whole process only needs 25 minutes left sides
The right side, steady quality, suitable for extensive preparation.
The present invention is by by Fe3O4@C nanos particle and gel monomers are combined, and form doping Fe3O4@C nanos particle is in one
The photon crystal film of ordered structure is tieed up, Fe is utilized3O4The overall co-ordination of@C nanos particle and matrix polyacrylamide gel, makes
Obtaining the photonic crystal hydrogel thin film has good response to aldehyde material, and especially PARA FORMALDEHYDE PRILLS(91,95) has specificly-response.Fe3O4@
C nano particle in matrix polyacrylamide gel along a direction in catenation (for example, the magnetic field applied in preparation process
Direction can be perpendicular to film surface, and the direction of its chain of the gold nanochains of generation also will be perpendicular with film surface), nanoparticle
The orientation of subchain can be adjusted flexibly as needed, can flexibly be controlled by the direction for controlling to apply magnetic field in preparation process.
The present invention is also by regulating and controlling nano particle diameter, content of monomer and the degree of cross linking in photonic crystal hydrogel thin film
(adding proportion of methylene diacrylamide in such as preparation process), further enhances the photonic crystal hydrogel thin film to molten
The response characteristic of aldehyde material concentration in liquid, especially enhances the specificly-response of PARA FORMALDEHYDE PRILLS(91,95).The present invention is particularly by light
The content of amide group is optimized in sub- crystal hydrogel thin film, the site reacted in increase film with formaldehyde, extends first
Aldehyde solution responds concentration range.The present invention is particularly by regulation and control Fe3O4The content and size of@C nano particles, by Fe3O4@C nanos
Concentration of the particle in photonic crystal hydrogel thin film entirety is 1~50mg/mL, and by Fe3O4The entirety particle diameter control of@C nanos particle
Be made as 100~180nm, as the intergranular of nano-particle is away from change, naked eye to color variation range will also change.
When the photonic crystal hydrogel thin film in the present invention is contacted with formaldehyde, the amide group in acrylamide will be with formaldehyde
Reaction is learned, so that the reversing of gel, gel is swelled, so that the color being observed visually changes.
The present invention is using the magnetic field of 100~1000 Gausses to Fe3O4@C nano particles are handled, and magnetic responsiveness is quick, high
Effect, Fe3O4@C nano particle assemblings speed is fast, Fe3O4@C nanos particle is accumulated the one-dimensional chain for becoming orderly from disordered state and taken
It is short.Obtained this polyacrylamide based hydrogel of photonic crystal hydrogel thin film can enter with formaldehyde in aqueous sodium carbonate
Row reaction, making the polarity of gel increases, and thus the volume of gel is expanded, and red shift occurs therewith for the schemochrome of hydrogel.Cause
This, the gel film can be used for the detection of concentration of formaldehyde in solution (can especially detect the dense of formaldehyde in solution in the basic conditions
Degree).The film PARA FORMALDEHYDE PRILLS(91,95) solution of preparation has response, short the time required to preparing, and can be used for the open hole detection of formaldehyde.
The preparation method of photonic crystal hydrogel thin film in the present invention, is the side by photopolymerization in situ under magnetic fields
Method is by one-dimensional Fe3O4@C nano particles are fixed in gel, by controlling preparation method overall flow technique and each step
Response parameter condition (including the species of reactant with proportioning, reaction temperature and time etc.), can be thin to photonic crystal hydrogel
Fe in film product3O4The addition and its periodic arrangement of@C nano particles control effectively, can so as to finally obtain bore hole
See and with the photonic crystal hydrogel thin film of specific formaldehyde response.
Brief description of the drawings
Fig. 1 is the schematic diagram that gel photonic crystal film is prepared in embodiment 1.
Fig. 2A is that hydrogel photonic crystal film is individually placed to containing glucose, sodium acetate, urea, poly- second in embodiment 1
Reflectance spectrum figure in sodium carbonate (6mg/mL) aqueous solution of enol, lysine and pyridine after 2 hours；During Fig. 2 B are embodiment 1
Hydrogel photonic crystal film is placed on the reflectance spectrum figure after 2 hours in pure sodium carbonate (6mg/mL) aqueous solution.
Fig. 3 be photonic crystal hydrogel thin film in embodiment 1 respectively concentration of formaldehyde be 0.3mol/L (corresponding diagram 3A),
Soaked 2 hours in the aqueous solution of 0.03mol/L (corresponding diagram 3B) and 0.003mol/L (corresponding diagram 3C) sodium carbonate (6mg/mL)
Front and rear reflectance spectrum figure.
Fig. 4 is that hydrogel photonic crystal film is being respectively 0.3mol/L (corresponding diagrams containing acetaldehyde concentration in embodiment 1
4A) or containing propanal concentration for 0.3mol/L (corresponding diagram 4B) aqueous sodium carbonate (6mg/mL) in immersion 2 hours before and after
Reflectance spectrum figure.
Fig. 5 be in embodiment 2 photonic crystal hydrogel thin film respectively concentration of formaldehyde be 0.3mol/L (corresponding diagram 5A),
0.1mol/L (corresponding diagram 5B), 0.03mol/L (corresponding diagram 5C) and 0.01mol/L (corresponding diagram 5D) sodium carbonate (6mg/mL)
Reflectance spectrum figure before and after being soaked 2 hours in the aqueous solution.
Fig. 6 be in embodiment 3 photonic crystal hydrogel thin film respectively concentration of formaldehyde be 0.3mol/L (corresponding diagram 6A),
0.1mol/L (corresponding diagram 6B), 0.03mol/L (corresponding diagram 6C) and 0.01mol/L (corresponding diagram 6D) sodium carbonate (6mg/mL)
Reflectance spectrum figure before and after being soaked 2 hours in the aqueous solution.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
The hydrogel photonic crystal film that the present invention is provided, is by Fe3O4@C nanos particle and poly- propionamide hydrogel group
Into described Fe3O4@C nano uniform particles are dispersed in polyacrylamide gel, are arranged in one-dimensional chain (i.e. along a direction
Catenation, can be separate between each chain, as shown in Figure 1), concentration of the nano-particle in monomer suspension is 1~
50mg/mL.The formalin response range of the hydrogel photonic crystal film is 0.003~0.3mol/L.
The hydrogel photonic crystal film that the present invention is provided it is bright-colored, it has single schemochrome, molten in formaldehyde
Color change generation red shift under liquid is stimulated is changed into green (or red) from blueness (or green), is suitable for open hole detection.It is described
Photon crystal film, can by polyacrylamide in alkaline solution specifically with formaldehyde reaction realize formaldehyde examination, most
Low detectable concentration is up to 0.003mol/L.
The photonic crystal hydrogel thin film that the present invention is provided, its preparation method comprises the following steps：
(1) preparation of photonic crystal hydrogel precursor solution：By Fe3O4@C nanos particle, acrylamide, methene double third
Acrylamide and initiator are dispersed in organic solvent, obtain the suspension of photonic crystal hydrogel precursor；Every milliliter of light
Contain Fe in sub- crystal hydrogel precursor3O4@C nanos 1~50mg of particle, 100~1000mg of acrylamide, the double propylene of methene
1~20mg of 1~200mg of acid amides and light trigger；The organic solvent is ethylene glycol, and its effect is to prevent Fe3O4@C nano particles
Issued in magnetic field it is estranged from.
The Fe3O4@C nano particles are prepared as follows：By ferrocene dissolving in acetone, solution is obtained, solution is dense
Degree is between 5~15mg/mL；Hydrogen peroxide can be added under normal temperature and obtain precursor liquid, make in the precursor liquid hydrogen peroxide concentration 0.01
Between~0.1mg/mL, 48~72h of solvent thermal reaction is carried out at 150~220 DEG C；After reaction completely, Magneto separate cleaning sample,
Described Fe is obtained after vacuum drying3O4@C nano particles.
Fe3O4@C nanos particle entirety particle diameter is 100~180nm, core Fe3O4With the respective particle diameter of shell C-material layer and
The big I of thickness is adjusted flexibly.
(2) preparation of photon crystal film is solidified：Photonic crystal hydrogel precursor solution in step (1) is paved into
The uniform film of 150~450 μ m-thicks；It is placed in 100~1000Gs magnetic field, the film develops the color immediately, and color speed is fast；
Ultraviolet light solidification obtains the photonic crystal hydrogel thin film with schemochrome of structure fixation, wherein, the photonic crystal water of solidification
The main component of gel film is polyacrylamide；
While ultraviolet light solidification is carried out, magnetic field need to be applied simultaneously, so that in photonic crystal hydrogel thin film
Fe3O4@C nanos particle is in the regular arrangement of chain under the influence of a magnetic field；
(3) by the solidification photonic crystal hydrogel thin film obtained in step (2) immersion in aqueous, remove organic molten
Agent, makes it fully be swelled, you can obtain required photonic crystal hydrogel thin film.
Wherein, film thickness is preferably 300 μm.
The response process for the photon crystal film that the present invention is provided is as follows：
Polyacrylamide in hydrogel photonic crystal film can in the basic conditions react with formalin, amido link with
Formaldehyde is reacted so that the increase of gel polarity.
Wherein, the alkalescence condition of formalin response is preferably 1~20mg/mL Na2CO3The aqueous solution, more preferably 6mg/
mL。
Wherein, hydrogel photonic crystal film and the time that formaldehyde reacts are 2h.
The photon crystal film can be rapidly prepared in the method, and whole flow process is only needed 25 minutes or so, it is adaptable to
It is prepared by industrial-scale.
The photon crystal film that the present invention is provided can be applied to open hole detection, especially formalin open hole detection, film
In blueness, with the addition of formalin, reflectance spectrum occurs red shift, shows the visible color change of bore hole.Photonic crystal
Hydrogel thin film has good optical property, also the Fe from the photonic crystal hydrogel thin film is demonstrated sideways3O4@C nanos
Particle has good periodic arrangement.
It is specific embodiment below：
Embodiment 1
Photon crystal film in the present embodiment, is prepared as follows：
(1) Fe3O4@C nano particles are prepared as follows：0.45g ferrocene is dissolved in 40mL acetone, obtained
To the solution of uniform dissolution, add hydrogen peroxide under normal temperature, dioxygen water volume be 1.3mL (so that in precursor liquid hydrogen peroxide concentration
For 1.15mol/L), 72h is reacted at 180 DEG C, after reaction completely, then Magneto separate uses acetone cleaning sample three times, and vacuum is done
The Fe is obtained after dry3O4@C nano particles.
The preparation of photonic crystal hydrogel precursor solution：By Fe3O4The double acryloyls of@C nanos particle, acrylamide, methene
Amine and initiator ultrasound are dispersed in ethylene glycol, obtain the suspension of photonic crystal hydrogel precursor；Every milliliter of second two
Contain Fe in alcohol3O4@C nanos particle 5mg, acrylamide 500mg, methylene diacrylamide 25mg and light trigger 5mg.
(2) preparation of photon crystal film is solidified：Photonic crystal hydrogel precursor solution in step (1) is paved into
The uniform film of 300 μ m thicks；It is placed in 200Gs magnetic field and develops the color；Ultraviolet light solidification obtains having for structure fixation and tied
The photonic crystal hydrogel thin film of structure color, wherein, the main component of the photonic crystal hydrogel thin film of solidification is polyacrylamide；
The a length of 365nm of ultraviolet light wave.
(3) by the solidification photonic crystal hydrogel thin film obtained in step (2) immersion in aqueous, remove organic molten
Agent, makes it fully be swelled, you can obtain required photonic crystal hydrogel thin film.
Obtained photon crystal film, including Fe3O4Nano-particle and PAHG, the Fe3O4Nanoparticle
Son is dispersed in PAHG, and concentration is 5mg/mL, the Fe3O4Nano-particle is arranged in one-dimensional chain, institute
Stating photon crystal film has good stability, as shown in Fig. 2A, Fig. 2 B；The formalin response of the photon crystal film
Scope is 0.003~0.3mol/L, such as Fig. 3；The photon crystal film, present blueness, with the increase of content of formaldehyde by
Green is crossfaded into, the visible color change of bore hole is showed, is easy to open hole detection；When the concentration of aldehyde material in the solution is identical
When, the photon crystal film shows different red shift degree in different types of aldehyde material solution, available for formaldehyde
The specific detection of solution, such as Fig. 4.During the main cause of its formaldehyde specificly-response of the photon crystal film is acrylamide
Amide group can be chemically reacted with formaldehyde, so as to change the polarity of gel, gel is swelled, and finally makes to visually observe
To color change, and photonic crystal gel mould from different aldehyde materials (such as formaldehyde, acetaldehyde, propionic aldehyde) when reacting
, the degree of reversing is different, therefore the degree that gel mould is swelled is also different, and Red Shift Phenomena is also differed, from
And the specificly-response for different aldehyde materials can be realized.
Embodiment 2
Photon crystal film in the present embodiment, is prepared as follows：
(1) Fe3O4@C nano particles are prepared as follows：0.6g ferrocene is dissolved in 60mL acetone, obtained
Hydrogen peroxide is added under the solution of uniform dissolution, normal temperature, dioxygen water volume is 4mL, 72h is reacted at 210 DEG C, after reaction completely,
Magneto separate acetone cleaning sample three times, obtains the Fe after vacuum drying3O4@C nano particles.
The preparation of photonic crystal hydrogel precursor solution：By Fe3O4The double acryloyls of@C nanos particle, acrylamide, methene
Amine and initiator ultrasound are dispersed in ethylene glycol, obtain the suspension of photonic crystal hydrogel precursor；Every milliliter of second two
Contain Fe in alcohol3O4@C nanos particle 5mg, acrylamide 500mg, methylene diacrylamide 30mg and light trigger 5mg.
(2) preparation of photon crystal film is solidified：Photonic crystal hydrogel precursor solution in step (1) is paved into
The uniform film of 300 μ m thicks；It is placed in 200Gs magnetic field and develops the color；Ultraviolet light solidification obtains having for structure fixation and tied
The photonic crystal hydrogel thin film of structure color, wherein, the main component of the photonic crystal hydrogel thin film of solidification is polyacrylamide；
The a length of 365nm of ultraviolet light wave.
(3) by the solidification photonic crystal hydrogel thin film obtained in step (2) immersion in aqueous, remove organic molten
Agent, makes it fully be swelled, you can obtain required photonic crystal hydrogel thin film.
Obtained photon crystal film, including Fe3O4Nano-particle and PAHG, the Fe3O4Nanoparticle
Son is dispersed in PAHG, and concentration is 5mg/mL, the Fe3O4Nano-particle is arranged in one-dimensional chain, institute
Stating photon crystal film has good stability；The formalin response range of the photon crystal film be 0.01~
0.3mol/L, such as Fig. 5；The photon crystal film, is presented green, red is gradually become with the increase of content of formaldehyde, is in
Reveal the visible color change of bore hole, be easy to open hole detection；The photon crystal film is shown not in different aldehyde solution
Same red shift degree, the specific detection available for formalin.
Embodiment 3
Photon crystal film in the present embodiment, is prepared as follows：
(1) Fe3O4@C nano particles are prepared as follows：0.6g ferrocene is dissolved in 60mL acetone, obtained
Hydrogen peroxide is added under the solution of uniform dissolution, normal temperature, dioxygen water volume is 2mL, 72h is reacted at 180 DEG C, after reaction completely,
Magneto separate acetone cleaning sample three times, obtains the Fe after vacuum drying3O4@C nano particles.
The preparation of photonic crystal hydrogel precursor solution：By Fe3O4The double acryloyls of@C nanos particle, acrylamide, methene
Amine and initiator ultrasound are dispersed in ethylene glycol, obtain the suspension of photonic crystal hydrogel precursor；Every milliliter of second two
Contain Fe in alcohol3O4@C nanos particle 5mg, acrylamide 500mg, methylene diacrylamide 22.5mg and light trigger 5mg.
(2) preparation of photon crystal film is solidified：Photonic crystal hydrogel precursor solution in step (1) is paved into
The uniform film of 300 μ m thicks；It is placed in 200Gs magnetic field and develops the color；Ultraviolet light solidification obtains having for structure fixation and tied
The photonic crystal hydrogel thin film of structure color, wherein, the main component of the photonic crystal hydrogel thin film of solidification is polyacrylamide；
The a length of 365nm of ultraviolet light wave.
(3) by the solidification photonic crystal hydrogel thin film obtained in step (2) immersion in aqueous, remove organic molten
Agent, makes it fully be swelled, you can obtain required photonic crystal hydrogel thin film.
Obtained photon crystal film, including Fe3O4Nano-particle and PAHG, the Fe3O4Nanoparticle
Son is dispersed in PAHG, and concentration is 5mg/mL, the Fe3O4Nano-particle is arranged in one-dimensional chain, institute
Stating photon crystal film has good stability；The formalin response range of the photon crystal film be 0.01~
0.3mol/L, such as Fig. 6；The photon crystal film, is presented green, is gradually become with the increase of content of formaldehyde orange, be in
Reveal the visible color change of bore hole, be easy to open hole detection；The photon crystal film is shown not in different aldehyde solution
Same red shift degree, the specific detection available for formalin.
Embodiment 4
Photon crystal film in the present embodiment, is prepared as follows：
(1) Fe3O4@C nano particles are prepared as follows：0.4g ferrocene is dissolved in 40mL acetone, obtained
Hydrogen peroxide is added under the solution of uniform dissolution, normal temperature, dioxygen water volume is 2mL, 72h is reacted at 180 DEG C, after reaction completely,
Magneto separate acetone cleaning sample three times, obtains the Fe after vacuum drying3O4@C nano particles.
The preparation of photonic crystal hydrogel precursor solution：By Fe3O4The double acryloyls of@C nanos particle, acrylamide, methene
Amine and initiator ultrasound are dispersed in ethylene glycol, obtain the suspension of photonic crystal hydrogel precursor；Every milliliter of second two
Contain Fe in alcohol3O4@C nanos particle 5mg, acrylamide 400mg, methylene diacrylamide 30mg and light trigger 4mg.
(2) preparation of photon crystal film is solidified：Photonic crystal hydrogel precursor solution in step (1) is paved into
The uniform film of 300 μ m thicks；It is placed in 300Gs magnetic field and develops the color；Ultraviolet light solidification obtains having for structure fixation and tied
The photonic crystal hydrogel thin film of structure color, wherein, the main component of the photonic crystal hydrogel thin film of solidification is polyacrylamide；
The a length of 365nm of ultraviolet light wave.
(3) by the solidification photonic crystal hydrogel thin film obtained in step (2) immersion in aqueous, remove organic molten
Agent, makes it fully be swelled, you can obtain required photonic crystal hydrogel thin film.
Obtained photon crystal film, including Fe3O4Nano-particle and PAHG, the Fe3O4Nanoparticle
Son is dispersed in PAHG, and concentration is 5mg/mL, the Fe3O4Nano-particle is arranged in one-dimensional chain, institute
Stating photon crystal film has good stability；The formalin response range of the photon crystal film be 0.01~
0.3mol/L；The photon crystal film, is presented blueness, green is gradually become with the increase of content of formaldehyde, is showed naked
The visible color change of eye, is easy to open hole detection；The photon crystal film shows different red in different aldehyde solution
Shifting degree, the specific detection available for formalin.
Embodiment 5
Photon crystal film in the present embodiment, is prepared as follows：
(1) Fe3O4@C nano particles are prepared as follows：0.65g ferrocene is dissolved in 65mL acetone, obtained
To the solution of uniform dissolution, hydrogen peroxide is added under normal temperature, dioxygen water volume is 2.2mL, 72h is reacted at 180 DEG C, reaction is complete
Afterwards, Magneto separate acetone cleaning sample three times, obtains the Fe after vacuum drying3O4@C nano particles.
The preparation of photonic crystal hydrogel precursor solution：By Fe3O4The double acryloyls of@C nanos particle, acrylamide, methene
Amine and initiator ultrasound are dispersed in ethylene glycol, obtain the suspension of photonic crystal hydrogel precursor；Every milliliter of second two
Contain Fe in alcohol3O4@C nanos particle 5mg, acrylamide 500mg, methylene diacrylamide 25mg and light trigger 5mg.
(2) preparation of photon crystal film is solidified：Photonic crystal hydrogel precursor solution in step (1) is paved into
The uniform film of 300 μ m thicks；It is placed in 200Gs magnetic field and develops the color；Ultraviolet light solidification obtains having for structure fixation and tied
The photonic crystal hydrogel thin film of structure color, wherein, the main component of the photonic crystal hydrogel thin film of solidification is polyacrylamide；
The a length of 365nm of ultraviolet light wave.
(3) by the solidification photonic crystal hydrogel thin film obtained in step (2) immersion in aqueous, remove organic molten
Agent, makes it fully be swelled, you can obtain required photonic crystal hydrogel thin film.
Obtained photon crystal film, including Fe3O4Nano-particle and PAHG, the Fe3O4Nanoparticle
Son is dispersed in PAHG, and concentration is 5mg/mL, the Fe3O4Nano-particle is arranged in one-dimensional chain, institute
Stating photon crystal film has good stability；The formalin response range of the photon crystal film be 0.003~
0.3mol/L；The photon crystal film, is presented blueness, green is gradually become with the increase of content of formaldehyde, is showed naked
The visible color change of eye, is easy to open hole detection；The photon crystal film shows different red in different aldehyde solution
Shifting degree, the specific detection available for formalin.
Embodiment 6
Photon crystal film in the present embodiment, is prepared as follows：
(1) Fe3O4@C nano particles are prepared as follows：0.45g ferrocene is dissolved in 40mL acetone, obtained
To the solution of uniform dissolution, hydrogen peroxide is added under normal temperature, dioxygen water volume is 1.3mL, 72h is reacted at 180 DEG C, reaction is complete
Afterwards, Magneto separate acetone cleaning sample three times, obtains the Fe after vacuum drying3O4@C nano particles.
The preparation of photonic crystal hydrogel precursor solution：By Fe3O4The double acryloyls of@C nanos particle, acrylamide, methene
Amine and initiator ultrasound are dispersed in ethylene glycol, obtain the suspension of photonic crystal hydrogel precursor；Every milliliter of second two
Contain Fe in alcohol3O4@C nanos particle 5mg, acrylamide 600mg, methylene diacrylamide 24mg and light trigger 5mg.
(2) preparation of photon crystal film is solidified：Photonic crystal hydrogel precursor solution in step (1) is paved into
The uniform film of 300 μ m thicks；It is placed in 200Gs magnetic field and develops the color；Ultraviolet light solidification obtains having for structure fixation and tied
The photonic crystal hydrogel thin film of structure color, wherein, the main component of the photonic crystal hydrogel thin film of solidification is polyacrylamide；
The a length of 365nm of ultraviolet light wave.
(3) by the solidification photonic crystal hydrogel thin film obtained in step (2) immersion in aqueous, remove organic molten
Agent, makes it fully be swelled, you can obtain required photonic crystal hydrogel thin film.
Obtained photon crystal film, including Fe3O4Nano-particle and PAHG, the Fe3O4Nanoparticle
Son is dispersed in PAHG, and concentration is 5mg/mL, the Fe3O4Nano-particle is arranged in one-dimensional chain, institute
Stating photon crystal film has good stability；The formalin response range of the photon crystal film be 0.01~
0.3mol/L；The photon crystal film, is presented blueness, green is gradually become with the increase of content of formaldehyde, is showed naked
The visible color change of eye, is easy to open hole detection；The photon crystal film shows different red in different aldehyde solution
Shifting degree, the specific detection available for formalin.
The thickness of photonic crystal hydrogel thin film can also influence detection characteristic (such as formaldehyde of photon crystal film in the present invention
Concentration-response scope etc. of solution detection), the photonic crystal gel laminated film in the present invention is preferably by photonic crystal gel
Forerunner's liquid suspension is paved into the uniform film (being preferably the uniform film of 300 μ m-thicks) of 150~450 μ m-thicks, the light accordingly obtained
Sub- crystal hydrogel thin film can PARA FORMALDEHYDE PRILLS(91,95) concentration range for 0.003~0.3mol/L the solution containing formaldehyde have response；
During practice, according to actual needs, the thickness of photonic crystal gel laminated film is adjusted flexibly.Photonic crystal water in the present invention
Gel film can be applied to the open hole detection of various aldehyde materials in solution, such as formaldehyde, acetaldehyde, propionic aldehyde, and formaldehyde examination
Phenomenon can make a distinction with the detected artifacts of other aldehyde materials such as acetaldehyde, propionic aldehyde, realize the specificity for formalin
Detection.
Light trigger its specific species for preparing that polyacrylamide used in the present invention refers to prior art, for example may be used
Using 2- hydroxyls -4- (2- hydroxy ethoxies) -2- methyl phenyl ketones；In the photocuring reaction of polyacrylamide is prepared, it can also draw
Enter crosslinking agent, its specific species of the crosslinking agent used also refers to prior art, for example, can use methylene diacrylamide.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of photonic crystal hydrogel thin film, it is characterised in that including polyacrylamide gel and be distributed in the polypropylene
Fe in acrylamide gel3O4@C nano particles, wherein the Fe3O4@C nanos particle is Fe3O4Surface coating has the nanometer of C-material
Particle, the Fe3O4@C nanos particle is in catenation, the Fe along a direction in the polyacrylamide gel3O4@C receive
Concentration of the rice corpuscles in the photonic crystal hydrogel thin film is 1~50mg/mL.
2. photonic crystal hydrogel thin film as claimed in claim 1, it is characterised in that the Fe3O4The particle diameter of@C nano particles is
100~180nm.
3. a kind of preparation method of photonic crystal hydrogel thin film, it is characterised in that comprise the following steps：
(1) preparation of photonic crystal gel precursor solution：By Fe3O4@C nanos particle, acrylamide, methylene diacrylamide
It is dispersed in light trigger in organic solvent, obtains photonic crystal Gel Precursor suspension；Wherein, every milliliter of light
Contain the Fe in sub- crystal Gel Precursor suspension3O41~50mg of@C nano particles, the acrylamide 100~
1000mg, the 1~200mg of methylene diacrylamide, and the 1~20mg of light trigger；
(2) preparation of photonic crystal gel laminated film：The photonic crystal Gel Precursor that will be obtained in the step (1)
Suspension is paved into the uniform film of 150~450 μ m-thicks；Then, the film is placed in quiet in 100~1000 Gausses (Gs) magnetic field
Put processing；Then, with ultraviolet light, the film makes presoma solidification generation polyacrylamide therein, consolidates so as to obtain structure
Fixed photonic crystal gel laminated film；
(3) by the photonic crystal gel laminated film obtained in the step (2) immersion in aqueous, have described in removing
Machine solvent, makes it can obtain photonic crystal hydrogel thin film after being fully swelled.
4. the preparation method of photonic crystal hydrogel thin film as claimed in claim 3, it is characterised in that in the step (2), institute
Organic solvent is stated for ethylene glycol.
5. the preparation method of photonic crystal hydrogel thin film as claimed in claim 3, it is characterised in that in the step (2), be
The photonic crystal Gel Precursor suspension is paved into the uniform film of 300 μ m-thicks.
6. the preparation method of photonic crystal hydrogel thin film as claimed in claim 3, it is characterised in that in the step (2), will
The film is in the magnetic field after stewing process, and the film will develop the color；It is preferred that, the film is in blueness or green.
7. the preparation method of photonic crystal hydrogel thin film as claimed in claim 3, it is characterised in that photonic crystal hydrogel is thin
The preparation method of film, in addition to Fe described in the step (1)3O4The preparation process of@C nano particles：
Ferrocene dissolving is formed into solution in acetone, the concentration for making ferrocene in the solution is 5~15mg/mL；Then, to this
Hydrogen peroxide is added in solution and obtains solvent thermal reaction precursor liquid, the concentration for making hydrogen peroxide in the precursor liquid is 0.01~0.1mg/
mL；Then, the precursor liquid is subjected to 48~72h of solvent thermal reaction at 150~220 DEG C；After reaction terminates, Magneto separate is obtained instead
Product is answered, then the Fe of cleaning simultaneously described in drying to obtain3O4@C nano particles.
8. the application of photonic crystal hydrogel thin film as claimed in claim 1 or 2, it is characterised in that applied to open hole detection.
9. the application of photonic crystal hydrogel thin film as claimed in claim 8, it is characterised in that the open hole detection is for molten
The open hole detection of aldehyde material in liquid；
It is preferred that, the aldehyde material includes at least one of formaldehyde, acetaldehyde and propionic aldehyde；
It is preferred that, the photonic crystal hydrogel thin film PARA FORMALDEHYDE PRILLS(91,95) concentration range is 0.003~0.3mol/L containing formaldehyde
Solution has response.
10. the application of photonic crystal hydrogel thin film as claimed in claim 8, it is characterised in that the open hole detection is in alkali
Carried out under property environment；It is preferred that, the alkaline environment is specially 1~20mg/mL of concentration Na2CO3The aqueous solution.
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| CN110518247A (en) * | 2019-08-19 | 2019-11-29 | 上海交通大学 | Lithium-sulfur cell and preparation method thereof based on carbon photonic crystal metal coating structure |
| CN110518247B (en) * | 2019-08-19 | 2022-09-16 | 上海交通大学 | Lithium-sulfur battery based on carbon photonic crystal metal coating structure and preparation method thereof |
| CN113549226A (en) * | 2020-04-24 | 2021-10-26 | 华中科技大学 | Photonic crystal hydrogel for visual bacteria detection and preparation and application thereof |
| CN113549226B (en) * | 2020-04-24 | 2022-11-01 | 华中科技大学 | Photonic crystal hydrogel for visual bacterial detection and preparation and application thereof |
| CN112842333A (en) * | 2020-12-31 | 2021-05-28 | 华中科技大学 | Visual glucose concentration detection microneedle patch, preparation method and application |
| CN114063200A (en) * | 2022-01-17 | 2022-02-18 | 武汉理工大学 | Asymmetric angle-dependent heterochromatic photonic crystal film and preparation method and application thereof |
| CN114063200B (en) * | 2022-01-17 | 2022-04-01 | 武汉理工大学 | Asymmetric angle-dependent heterochromatic photonic crystal film and preparation method and application thereof |
| CN116854999A (en) * | 2023-09-01 | 2023-10-10 | 武汉理工大学 | Fast-response photonic crystal heterogeneous gel material, preparation method and application thereof |
| CN116854999B (en) * | 2023-09-01 | 2023-12-19 | 武汉理工大学 | Quick-response photonic crystal heterogeneous gel material, preparation method and application thereof |
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