CN107699952A - A kind of preparation method of fibroin 1-D photon crystal - Google Patents

A kind of preparation method of fibroin 1-D photon crystal Download PDF

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Publication number
CN107699952A
CN107699952A CN201710821013.9A CN201710821013A CN107699952A CN 107699952 A CN107699952 A CN 107699952A CN 201710821013 A CN201710821013 A CN 201710821013A CN 107699952 A CN107699952 A CN 107699952A
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fibroin
photon crystal
preparation
volume
parts
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郭明
王景宇
周玲
姜超
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Dalian University
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Dalian University
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    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/54—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B5/00—Single-crystal growth from gels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials
    • G02B1/005—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials made of photonic crystals or photonic band gap materials

Abstract

The present invention relates to a kind of preparation method of fibroin 1-D photon crystal, belong to optical field.Main technical schemes are as follows：Degumming twice, a salt solution, and flowing water dialysis 72h are carried out to silk cocoon layer, 4.0vt% 4.5vt% fibroin solutions is obtained, then, fibroin solutions is concentrated, the 7vt% 8vt% fibroin aqueous solution is made；42 parts by volume absolute ethyl alcohols are taken, add 4 parts by volume butyl titanates, and 2 parts by volume glacial acetic acid, the magnetic agitation at 25 28 DEG C are added dropwise in whipping process；The alternating deposit fibroin aqueous solution and TiO on the glass sheet2Colloidal sol, the present invention are prepared for fibroin 1-D photon crystal using spin-coating method first, and simple using equipment, prepare fast, thickness is easily-controllable, reproducible, and material therefor fibroin is biomaterial, green, and service life is longer, its application value is larger, and prospect is preferable.

Description

A kind of preparation method of fibroin 1-D photon crystal
Technical field
The present invention relates to optical field, and in particular to a kind of preparation method of fibroin 1-D photon crystal.
Background technology
Fibroin is the albumen extracted from silk fiber, with non-toxic, nonirritant and with good ventilative Penetrability and excellent biocompatibility and biodegradability.In biological technical field, fibroin membrane can be as immobilised enzymes Carrier and prepare biology sensor.Utilize the soliquid of the method synthesis of metal oxide of sol-gel, the size of particle It is that the size and dimension of particle is controlled by reactant concentration, catalyst, peptizing agent or complexing agent with shape, due to TiO2 High-index-contrast can establish multi-layer film structure, be to prepare the relatively good bulk material of 1-D photon crystal.
The content of the invention
It is an object of the invention to provide a kind of method for quickly, conveniently preparing fibroin 1-D photon crystal.With setting It is standby simple, prepare fast, thickness is easily-controllable, it is reproducible the characteristics of.
Technical scheme is as follows：A kind of preparation method of fibroin 1-D photon crystal, is specifically included as follows Step：
(1) extraction of fibroin：Degumming twice, a salt solution, and flowing water dialysis 72h are carried out to silk cocoon layer, is obtained 4.0vt%-4.5vt% fibroin solutions, then, fibroin solutions are concentrated, 7vt%-8vt% silkworm is made Silk protein aqueous solution；
(2)TiO2The preparation of colloidal sol：42 parts by volume absolute ethyl alcohols are taken, add 4 parts by volume butyl titanates, and stirred 2 parts by volume glacial acetic acid, the magnetic agitation at 25-28 DEG C are added dropwise in journey；(3) spin coating prepares 1-D photon crystal：On the glass sheet The alternating deposit fibroin aqueous solution and TiO2Colloidal sol, concretely comprise the following steps：Dropwise addition fibroin solutions are 0.5 parts by volume, whirl coating Time 60s, rotating speed 420rpm, 10min is then heated in 80 DEG C of baking ovens, then the TiO of 0.25 parts by volume is added dropwise2Colloidal sol, turning Speed is spin coating whirl coating 60s under conditions of 420rpm, then 80 DEG C of heating 10min in an oven, is alternately repeated deposition and obtains silk egg White 1-D photon crystal.
Further, the natrium carbonicum calcinatum solution concentration that the degumming is prepared be 5wt%, the anhydrous calcium chloride of salt solution preparation Solution is 50wt%.
Further, described usually time is 30min, and the salt solution time is 5min.
Further, step (2) stirring condition is：The magnetic agitation 4h at 25-28 DEG C.
Further, step (3) sheet glass will pass through following order and handle：
1) ultrasonication 30min is distinguished in acetone, ethanol successively；
2) it is soaked in by 98vt%H2SO4With 30vt%H2O2According to volume ratio 3:In 1 mixed liquor prepared, 2h is stood；
3) deionized water ultrasonication 30min；
4) drying process under nitrogen stream.
Further, described spin coating first layer is fibroin solutions, and last layer is TiO2Colloidal sol, total number of plies are 8.
1-D photon crystal is a kind of optical material with forbidden photon band.1-D photon crystal preparation method has a lot, Mainly there are spin-coating method, physical vaporous deposition and sol-gal process etc..Wherein spin-coating method is because simple using equipment, and preparation is fast, film It is thick easily-controllable, it is reproducible the features such as and obtain the extensive use of this area.Polymer/inorganic thing multilayer films can pass through Circulate spin-on inorganic dielectric material and be prepared by polymer composites.
Beneficial effects of the present invention are as follows：The present invention utilizes the fibroin of low-refraction and the titanium dioxide of high index of refraction Titanium, fibroin 1-D photon crystal is prepared for using spin-coating method first, and it is simple using equipment, prepare soon, thickness is easily-controllable, weight Renaturation is good；It is green and material therefor fibroin is biomaterial, and service life is longer, its application value is larger, Prospect is preferable.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is the electron microscope of photonic crystal prepared by the present invention；
Fig. 3 is different colours photonic crystal and corresponding spectrogram.
Embodiment
With reference to embodiment, the present invention will be further described, if without specified otherwise, material involved in the present invention Material is commercially available：
Following examples are related to sheet glass and are both needed to handle by following steps：
1) ultrasonication 30min is distinguished in acetone, ethanol successively；
2) immersion is by 98vt%H2SO4With 30vt%H2O2According to volume ratio 3:In 1 mixed liquor prepared, 2h is stood；
3) deionized water ultrasonication 30min；
4) drying process under nitrogen stream.
Embodiment 1
(1) 5wt% Carbon Dioxide sodium solution 200ml is prepared, is boiled, it is incomplete for the first time to be put into the progress of 6.0g silk cocoons layer Degumming, handle 30min, obtained endless bright silk albumen, 55 DEG C of drying 1h.
(2) second of complete degumming process is carried out, the same step of method (1), obtains the fibroin of complete degumming, 55 DEG C of bakings Dry 1h is standby.
(3) 50wt% anhydrous calcium chloride solution 40ml is prepared, boils, the drying fibroin of complete degumming is put into, 5min is boiled after dissolving, the fibroin of complete degumming is become solution, fibroin solutions concentration is 4.0vt%.
(4) solution that step (3) obtains is transferred in bag filter, flowing water is dialysed 72 hours.Finally by the silkworm after dialysis Silk protein solution is concentrated, and obtains the 7vt% fibroin aqueous solution, standby.
(5) 42mL absolute ethyl alcohols are taken, rapidly join 4mL butyl titanates, and 2mL glacial acetic acid is slowly added dropwise in stirring, (25 DEG C) magnetic agitation 4h at room temperature, is prepared TiO2Colloidal sol.
(6) alternating deposit fibroin (SF) solution and TiO on the glass sheet2Colloidal sol, first layer are SF solution, last Layer is TiO2Colloidal sol, total number of plies of film is 8, and SF/TiO is prepared21-D photon crystal.Wherein spin coating sets initial speed Φ It is set as 420rpm for low speed, it is 0.5mL that SF solution, which is added dropwise, and the whirl coating time is 60s, then heats 10min in 80 DEG C of baking ovens, 0.25mL TiO is added dropwise under similarity condition again2Colloidal sol, 420rpm rotating speed spin coating whirl coating 60s, then heated in 80 DEG C of baking ovens 10min。
(7) SF/TiO that will be prepared21-D photon crystal is put into brittle failure in liquid nitrogen, and with electron-microscope scanning section, obtains Scanning electron microscope (SEM) photograph, as shown in Figure 2.It can be seen that being layer structure inside it, interface between layers is apparent from.
In addition, the 1-D photon crystal of different reflection colours can be made by adjusting different spin speeds, micro spectral is used The reflectance spectrum figure that instrument measures is shown in Fig. 3.
Embodiment 2
(1) 5wt% Carbon Dioxide sodium solution 200ml is prepared, is boiled, it is incomplete for the first time to be put into the progress of 7.0g silk cocoons layer Degumming, handle 30min, obtained endless bright silk albumen, 55 DEG C of drying 1h.
(2) second of complete degumming process is carried out, the same step of method (1), obtains the fibroin of complete degumming, 55 DEG C of bakings Dry 1h is standby.
(3) 50wt% anhydrous calcium chloride solution 40ml is prepared, boils, the drying fibroin of complete degumming is put into, 5min is boiled after dissolving, the fibroin of complete degumming is become solution, fibroin solutions concentration is 4.5vt%.
(4) solution that step (3) obtains is transferred in bag filter, flowing water is dialysed 72 hours.Finally by the silkworm after dialysis Silk protein solution is concentrated, and obtains the 8vt% fibroin aqueous solution, standby.
(5) 42mL absolute ethyl alcohols are taken, rapidly join 4mL butyl titanates, and 2mL glacial acetic acid is slowly added dropwise in stirring, (25 DEG C) magnetic agitation 4h at room temperature, is prepared TiO2Colloidal sol.
(6) alternating deposit fibroin (SF) solution and TiO on the glass sheet2Colloidal sol, first layer are SF solution, last Layer is TiO2Colloidal sol, total number of plies of film is 8, and SF/TiO is prepared21-D photon crystal.Wherein spin coating sets initial speed to set It is set to 420rpm, it is 0.5mL that SF solution, which is added dropwise, and the whirl coating time is 60s, and 10min, similarity condition are then heated in 80 DEG C of baking ovens Under 0.25mL TiO is added dropwise again2Colloidal sol, 420rpm spin coating whirl coating 60s, then heat 10min in 80 DEG C of baking ovens.
(7) SF/TiO that will be prepared21-D photon crystal is put into brittle failure in liquid nitrogen, and with electron-microscope scanning section, obtains Scanning electron microscope (SEM) photograph.It can be seen that being layer structure inside it, interface between layers is apparent from.

Claims (6)

  1. A kind of 1. preparation method of fibroin 1-D photon crystal, it is characterised in that：Specifically comprise the following steps：
    (1) extraction of fibroin：Degumming twice, a salt solution, and flowing water dialysis 72h are carried out to silk cocoon layer, is obtained 4.0vt%-4.5vt% fibroin solutions, then, fibroin solutions are concentrated, 7vt%-8vt% silkworm is made Silk protein aqueous solution；
    (2)TiO2The preparation of colloidal sol：42 parts by volume absolute ethyl alcohols are taken, add 4 parts by volume butyl titanates, and in whipping process 2 parts by volume glacial acetic acid, the magnetic agitation at 25-28 DEG C is added dropwise；
    (3) spin coating prepares 1-D photon crystal：The alternating deposit fibroin aqueous solution and TiO on the glass sheet2Colloidal sol, specific step Suddenly it is：Dropwise addition fibroin solutions are 0.5 parts by volume, whirl coating time 60s, rotating speed 420rpm, are then heated in 80 DEG C of baking ovens 10min, then the TiO of 0.25 parts by volume is added dropwise2Colloidal sol, the spin coating whirl coating 60s under conditions of rotating speed is 420rpm, then in an oven 80 DEG C of heating 10min, are alternately repeated deposition and obtain fibroin 1-D photon crystal.
  2. 2. the preparation method of fibroin 1-D photon crystal according to claim 1, it is characterized in that：The degumming is prepared Natrium carbonicum calcinatum solution concentration be 5wt%, the anhydrous calcium chloride solution that salt solution is prepared is 50wt%.
  3. 3. the preparation method of fibroin 1-D photon crystal according to claim 1, it is characterized in that：During described degumming Between be 30min, the salt solution time is 5min.
  4. 4. the preparation method of fibroin 1-D photon crystal according to claim 1, it is characterized in that：The step (2) Stirring condition is：The magnetic agitation 4h at 25-28 DEG C.
  5. 5. the preparation method of fibroin 1-D photon crystal according to claim 1, it is characterized in that：The step (3) Sheet glass will pass through following order and handle：
    1) ultrasonication 30min is distinguished in acetone, ethanol successively；
    2) it is soaked in by 98vt%H2SO4With 30vt%H2O2According to volume ratio 3:In 1 mixed liquor prepared, 2h is stood；
    3) deionized water ultrasonication 30min；
    4) drying process under nitrogen stream.
  6. 6. the preparation method of fibroin 1-D photon crystal according to claim 1, it is characterized in that：Described spin coating One layer is fibroin solutions, and last layer is TiO2Colloidal sol, total number of plies are 8.
CN201710821013.9A 2017-09-13 2017-09-13 A kind of preparation method of fibroin 1-D photon crystal Pending CN107699952A (en)

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CN111982840A (en) * 2020-07-31 2020-11-24 大连大学 Fibroin one-dimensional photonic crystal sensor for rapidly detecting humidity in environment
CN111982834A (en) * 2020-07-31 2020-11-24 大连大学 Method for rapidly detecting organic solvent vapor

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CN111982834A (en) * 2020-07-31 2020-11-24 大连大学 Method for rapidly detecting organic solvent vapor

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