CN103172878B - Synthesis method of silicon-based photochromic elastomer containing naphthol pyran and having cross-linked structure - Google Patents
Synthesis method of silicon-based photochromic elastomer containing naphthol pyran and having cross-linked structure Download PDFInfo
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- CN103172878B CN103172878B CN201210329175.8A CN201210329175A CN103172878B CN 103172878 B CN103172878 B CN 103172878B CN 201210329175 A CN201210329175 A CN 201210329175A CN 103172878 B CN103172878 B CN 103172878B
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Abstract
The invention belongs to a synthesis method of an organic/polymer material, and specifically relates to a synthesis method of a silicon-based photochromic elastomer containing naphthol pyran and having a cross-linked structure. Hydrogen-containing silicon oil is used as a soft chain segment, a naphthol pyran polymer monomer containing a polymerization unit is a photochromic functional group, and a naphthol pyran polymer monomer containing two polymerization units is a cross linking agent; and at certain temperature, a silicon-based photochromic elastomer having a cross-linked structure is prepared by taking chloroplatinic acid as a catalyst. In the preparation process, the conditional reaction materials are proportioned, and the content of the photochromic elastomer is 20-50% so as to ensure that the obtained block polymer has the properties of an elastomer. At present, a report about the silicon-based photochromic elastomer containing naphthol pyran and having a cross-linked structure is unavailable. The elastomer with the structure has the characteristics of an elastomer and has photochromic property, and can be used for preparing a flexible optical device.
Description
Technical field
The invention belongs to the synthetic method of organic/polymer materials, be specifically related to a kind of silica-based photochromic elastomeric synthetic method of crosslinking structure containing naphthyl hydroxide pyran group that have.
Background technology
Photochromism (Photochromism) refers to that compound molecule molecule under the optical radiation that is subject to different wave length can carry out reversible variation between two kinds of molecularities with different spectral qualities, and the molecule of these two kinds of different structures has different spectral qualities, as colour-change or absorption spectrum difference.This under the effect of light or heat, can there is reversible change phenomenon and be called photochromism in the molecular structure of compound
[1].Photochromic compound and polymkeric substance thereof are a kind of new function materials, can be widely used in the Disciplinary Frontiers such as optical switch, optical storage and nonlinear optics
[2-3], wherein photochromic material also has a well-known application to be applied to exactly chameleon glass block, and naphthols pyrans is to be applied to color-changing lens the earliest and the photochromic material of moulding
[4].Because photochromic material has huge potential using value, scientific workers, in this field, comprise that a large amount of work has all been done in the aspect such as the performance characterization of design, preparation and material and the preparation of device of novel material
[5].The photochromic material of report mainly contains Luo oxazine at present
[6], nitrogen benzide
[7], phenoxy group naphtho naphthoquinone
[8], diarylethene
[9], naphthols pyrans and spiro-pyrans
[10]deng group.
Elastomerics (or being called rubber) is the elastomeric network structure of the low cross-linking degree that contains chemistry or physical nodes.Since nineteen forty-four pure natural and the elastomerics of synthetic by reported first since
[11], researchist conducts extensive research all kinds of elastomeric properities and application, makes elastomerics all have practical application aspect a lot.Elastomerics can be used for cable jacket, casting films, fiber, automotive upholstery, exterior trimming parts, sealing articles for use, non-woven fabrics, packaging, personal hygiene article, coating etc., in addition, elastomerics also can be applicable to curable product, as implanted medical material and artificial muscle etc.
[12].
Although common amorphous polymer has good application aspect a lot, also there is the deficiency on self applying.These materials are all crisp and easily broken conventionally, and need to, in very high temperature, on the second-order transition temperature of polymkeric substance, could realize in some application.For example, polystyrene, in the time of the application aspect actuator, can not at room temperature carry out, and can only more than the second-order transition temperature of polymkeric substance, just can
[13].The biodegradable material that organizational project and useful for drug delivery aspect have a potential application in addition as the multipolymer of polylactide, caprolactone and rac-Lactide and glycollide also must be more than physiology stability when the application
[14].Because elastomerics has good flexibility at normal temperatures, can prepare and there is the difform devices such as bending, and there is at normal temperatures good processibility, just in time make up these deficiencies of amorphous polymer.
Photochromic group is incorporated in elastomerics, can makes elastomerics there is novel character.Such as azobenzene group is incorporated in elastomerics SBS, make elastomerics can be used for preparing grating and optical storage
[15], under the effect of light, shape and the internal pressure of introducing the elastomer sample of liquid crystal azobenzene group all can change.In addition, the photochromic group with liquid crystal property is incorporated into and in elastomerics, can makes elastomerics bending phenomenon occurs under the effect of optical radiation, make material there is liquid crystal property and there is again elastomeric characteristic
[16].By free radical polymerisation process, Luo oxazine and spiro-pyrans are incorporated in elastomerics SBS, elastomeric stretching can cause the dynamic (dynamical) considerable change of photochromic colour killing
[17].
In patent ZL201010290640.2, we utilize atom transferred free radical method to prepare the photochromic elastomerics of Han Luo oxazine and spiro-pyrans, between polybutadiene block and photochromic polymer block, connect by ester group.In this application, we adopt containing hydrogen silicone oil as soft chain segment, taking the naphthols pyrans polymerization single polymerization monomer containing a polymerized unit as photochromic function group, taking containing the naphthols pyrans polymerization single polymerization monomer of two polymerized units as linking agent, utilize Platinic chloride to there is the silica-based photochromic elastomerics of crosslinking structure for catalyzer preparation.At present, yet there are no about this and there is crosslinking structure containing the silica-based photochromic elastomeric report of naphthyl hydroxide pyran group.Like this material make the kind of not only having enriched photochromic polymer material, also may provide the light functional polymer material with distinguishing feature and excellent property for polymers function material.
reference:
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[11]?C.?E.?Hall,?E.?A.?Hauser,?D.?S.?le?Beau,?F.?O.?Schmitt?and?P.?TalaIay,?
Ind.?Eng.?Chem,?1944,?36,?634.
[12]?H.?B.?LEE,?H.?QUACH,?D.?B.?BERRY,?and?W.?J.?STITH,?
Polymeric?Materials?and?Artificial?Organs,?Chapter?7,?1984,?pp?99-109,?ACS?Symposium?Series,?Volume?256.
[13]?J.?He,?Y.?Zhao,?Y.?Zhao,?
Soft?matter,?2009,5,308.
[14]?B.?G.?Amsden,?G.?Misra,?F.?Gu,?H.?M.?Younes,?
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[17]?X.?C.?Zhao,?Guang?Wang,?Kuo?Zhang,?J?Appl?Poly?Sci,?Published?on?line.?http://onlinelibrary.wiley.com/advanced/search/results.
Summary of the invention
The object of this invention is to provide a kind of silica-based photochromic elastomeric synthetic method of crosslinking structure containing naphthyl hydroxide pyran group that have.
Synthesized reference document (the Xiancai Zhao of monomer 1,2 and monomer 3, Guang Wang and Kuo Zhang, Journal of Applied Polymer Science, 2012,124 (5), 4157 – 4164 and Xiancai Zhao, Guang Wang and Kuo Zhang, Journal of Applied Polymer Science, published on line, http://onlinelibrary.wiley.com/advanced/search/results) prepare.The structural formula of the naphthols pyrans polymerization single polymerization monomer 1,2,3,4 that the application selects is as follows:
In reaction, agents useful for same is: n-butyllithium solution, benzophenone, trimethylsilyl acetylene, 2,6-dihydroxy naphthlene, ethylene bromohyrin, 6-bromoethanol, 4-hydroxy phenyl benzophenone, third rare acyl chlorides, hydrochloric acid, triethylamine, Platinic chloride, containing hydrogen silicone oil, divinyl.
The synthetic route of monomer 4 and step be as shown in Figure 2:
synthesizing of compound a:by 9.9g(50 mmol) 4-dihydroxy benaophenonel, 10.3g (75 mmol) Anhydrous potassium carbonate, a fritter potassiumiodide and 100ml N, the mixture of dinethylformamide (DMF) was heated to 70 reactions after 1 hour in the 250ml there-necked flask that return line is housed, and splashed into the 15ml solution of 6.8g (55mmol) ethylene bromohyrin.Then be warming up to 85 DEG C of reactions and be down to room temperature after 24h, mixture is poured in 400ml distilled water, regulate pH=6 with hydrochloric acid, static 1 hour, suction filtration.With ethyl acetate (50ml × 3) extraction, anhydrous sodium sulfate drying.Product is purified (ethyl acetate: sherwood oil=1:4) by chromatographic column, obtains white solid, 6.0g, productive rate 60%.
compound b's is synthetic:under anhydrous and oxygen-free condition, 3ml (20mmol) trimethylsilyl acetylene and 5ml tetrahydrofuran (THF) are joined in 100ml single port flask, reaction system is down to after-10 DEG C with electronics low-temperature cooling system, add 8ml(20mmol) n-Butyl Lithium, stirring reaction one hour.The tetrahydrofuran solution of 6ml compound a (2.8g, 20mmol) joins in reaction system, continues reaction and is warming up to 0 DEG C after 3 hours, adds the methanol solution of 20ml potassium hydroxide (1.36g).React and rise to normal temperature after 15 minutes, adjust pH=7 with Glacial acetic acid, be extracted with ethyl acetate three times.Product, through silica gel column chromatography separating purification (ethyl acetate: sherwood oil=1:5), obtains yellow solid 2.0g, productive rate 71%.
compound c's is synthetic:
By 20g(124.9mmol) 2, the mixture of 6-dihydroxy naphthlene, 24.3g (17.48mmol), a fritter potassiumiodide and 110mlDMF was heated to 80 reactions after 1 hour in the 250ml there-necked flask that return line is housed, and splashed into the 20ml solution of 15.6g (124.9mmol) ethylene bromohyrin.Then be warming up to 85 DEG C of reactions and be down to room temperature after 24h, mixture is poured in 450ml distilled water, regulate pH=6 with hydrochloric acid, static 1 hour, suction filtration.With ethyl acetate (50ml × 3) extraction, anhydrous sodium sulfate drying.Product is purified (ethyl acetate: sherwood oil=5:8) by chromatographic column, obtains white solid, 4.5g, productive rate 22%.
synthesizing of monomer 4:
Under nitrogen protection in the round-bottomed flask of 50ml by 2.08g (10mmol)
band 2.04g (10mmol)
cbe dissolved in 10ml CH
2cl
2, under room temperature, stir 10 minutes, add 0.2g p-methyl benzenesulfonic acid.At reaction 48h, decompression steams CH
2cl
2, with this mixture of acetic acid ethyl dissolution, (4 × 30ml) extraction that adds water afterwards, anhydrous sodium sulfate drying, obtains orange/yellow solid 1.05g, productive rate 48%. after separating with silica gel column chromatography (ethyl acetate: sherwood oil=1:2)
there is the silica-based photochromic elastomeric synthetic method of crosslinking structure containing naphthols pyrans: in the three-necked flask of 100ml that reflux condensing tube and dropping funnel are housed, add the containing hydrogen silicone oil, 25～55ml toluene of 1.5～2.0g and the solution with respect to 0.5～2.5% Platinic chloride of naphthols pyrans polymerization single polymerization monomer quality, pass into 15 minutes post-heating of argon gas, when temperature rise to 50～100
owhen C, drip 0.2～0.5g and there is the naphthols pyrans monomer of a polymerized unit and 0.2～0.4g and have the mixing solutions of 10～30ml toluene of the monomer 4 of linking agent effect, in 1～3 hour, drip off, then continue to be heated to reflux, stopped reaction after 1～4 hour.Remaining toluene is removed in underpressure distillation, residuum is dissolved in a small amount of tetrahydrofuran solvent, after aluminium sesquioxide post is gone out catalyzer, in cold methyl alcohol, sedimentation obtains photochromic elastomerics 2～4 times, and product is the solid matter that hardness is very low, productive rate 70～90%.
Major advantage of the present invention is: provide have the photochromic elastomeric synthetic method of crosslinking structure containing naphthols pyrans a kind of preparation taking Platinic chloride as catalyzer, operation is simple for present method, and prepared product has photochromic property and have again elastomeric character.At present, yet there are no about this and there is crosslinking structure containing the silica-based photochromic elastomeric report of naphthyl hydroxide pyran group.Like this material make the kind of not only having enriched photochromic polymer material, also may provide the light functional polymer material with distinguishing feature and excellent property for polymers function material.
Brief description of the drawings
Accompanying drawing 1 is the abosrption spectrogram of the film that is pressed into of product of the present invention before and after UV-irradiation;
Accompanying drawing 2 is synthetic route and steps of monomer 4.
Embodiment
embodiment 1:in the three-necked flask of 100ml that reflux condensing tube and dropping funnel are housed, add the aqueous solution of containing hydrogen silicone oil, 25ml toluene and the 0.004g Platinic chloride of 1.5g, pass into 15 minutes post-heating of argon gas, when temperature rise to 65
owhen C, drip 0.3g monomer
1with 0.1g monomer
4the toluene mixing solutions of 15ml, in 2 hours, drip off, then continue to be heated to reflux, stopped reaction after 2 hours.Remaining toluene is removed in underpressure distillation, residuum is dissolved in a small amount of tetrahydrofuran solvent, and after aluminium sesquioxide post is gone out catalyzer, in cold methyl alcohol, sedimentation obtains photochromic elastomerics 3 times, and product is the solid matter that hardness is very low, 1.64g, productive rate 86.3%.The structural formula of product is as follows:
Use vulcanizing press that product is pressed into after film, film can extend within the specific limits under stretching action, can automatically recover again the state before stretching after cancellation stretching action.This absolutely proves that product has elastomeric character.Made film can change by diffraction under UV-irradiation, illustrates that it has photochromism.Accompanying drawing is the abosrption spectrogram of film before and after UV-irradiation, further illustrates product and has photochromic property.
embodiment 2:
In the three-necked flask of 100ml that reflux condensing tube and dropping funnel are housed, add the aqueous solution of containing hydrogen silicone oil, 18ml toluene and the 0.003g Platinic chloride of 1.0g, pass into 15 minutes post-heating of argon gas, when temperature rise to 80
owhen C, drip 0.2g monomer
2with 0.08g monomer
4the toluene mixing solutions of 10ml, in 1.5 hours, drip off, then continue to be heated to reflux, stopped reaction after 3 hours.Remaining toluene is removed in underpressure distillation, residuum is dissolved in a small amount of tetrahydrofuran solvent, and after aluminium sesquioxide post is gone out catalyzer, in cold methyl alcohol, sedimentation obtains photochromic elastomerics 3 times, and product is the solid matter that hardness is very low, 0.98g, productive rate 76.5%.The structural formula of product is as follows:
embodiment 3:
In the three-necked flask of 100ml that reflux condensing tube and dropping funnel are housed, add the aqueous solution of containing hydrogen silicone oil, 25ml toluene and the 0.003g Platinic chloride of 1.2g, pass into 15 minutes post-heating of argon gas, when temperature rise to 45
owhen C, drip 0.25g monomer
3with 0.1g monomer
4the toluene mixing solutions of 15ml, in 2.5 hours, drip off, then continue to be heated to reflux, stopped reaction after 3 hours.Remaining toluene is removed in underpressure distillation, residuum is dissolved in a small amount of tetrahydrofuran solvent, and after aluminium sesquioxide post is gone out catalyzer, in cold methyl alcohol, sedimentation obtains photochromic elastomerics 3 times, and product is the solid matter that hardness is very low, 1.28g, productive rate 82.6%.The structural formula of product is as follows:
Claims (2)
1. there is the silica-based photochromic elastomeric synthetic method of crosslinking structure containing naphthols pyrans, it is characterized in that: in the three-necked flask of 100ml that reflux condensing tube and dropping funnel are housed, add the aqueous solution of containing hydrogen silicone oil, 25ml toluene and the 0.004g Platinic chloride of 1.5g, pass into 15 minutes post-heating of argon gas, when temperature rise to 65
owhen C, drip 0.3g monomer
1with 0.1g monomer
4the toluene mixing solutions of 15ml, in 2 hours, drip off, continue to be again heated to reflux, stopped reaction after 2 hours, remaining toluene is removed in underpressure distillation, residuum is dissolved in a small amount of tetrahydrofuran solvent, after aluminium sesquioxide post is removed catalyzer, in cold methyl alcohol, sedimentation obtains photochromic elastomerics 3 times, and product is the solid matter that hardness is very low, 1.64g, productive rate 86.3%, the structural formula of product is as follows:
；
Or: in the three-necked flask of 100ml that reflux condensing tube and dropping funnel are housed, add the aqueous solution of containing hydrogen silicone oil, 18ml toluene and the 0.003g Platinic chloride of 1.0g, pass into 15 minutes post-heating of argon gas, when temperature rise to 80
owhen C, drip 0.2g monomer
2with 0.08g monomer
4the toluene mixing solutions of 10ml, in 1.5 hours, drip off, continue to be again heated to reflux, stopped reaction after 3 hours, remaining toluene is removed in underpressure distillation, residuum is dissolved in a small amount of tetrahydrofuran solvent, after aluminium sesquioxide post is removed catalyzer, in cold methyl alcohol, sedimentation obtains photochromic elastomerics 3 times, and product is the solid matter that hardness is very low, 0.98g, productive rate 76.5%, the structural formula of product is as follows:
；
Or: in the three-necked flask of 100ml that reflux condensing tube and dropping funnel are housed, add the aqueous solution of containing hydrogen silicone oil, 25ml toluene and the 0.003g Platinic chloride of 1.2g, pass into 15 minutes post-heating of argon gas, when temperature rise to 45
owhen C, drip 0.25g monomer
3with 0.1g monomer
4the toluene mixing solutions of 15ml, in 2.5 hours, drip off, continue to be again heated to reflux, stopped reaction after 3 hours, remaining toluene is removed in underpressure distillation, residuum is dissolved in a small amount of tetrahydrofuran solvent, after aluminium sesquioxide post is removed catalyzer, in cold methyl alcohol, sedimentation obtains photochromic elastomerics 3 times, and product is the solid matter that hardness is very low, 1.28g, productive rate 82.6%, the structural formula of product is as follows:
The structural formula of above naphthols pyrans polymerization single polymerization monomer 1,2,3,4 is as follows:
。
2. what make by method claimed in claim 1 has crosslinking structure containing the silica-based photochromic elastomerics of naphthyl hydroxide pyran group.
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| CN104356282B (en) * | 2014-10-19 | 2016-10-19 | 吉林大学 | Photochromic fluorescent switch Nano microsphere containing naphthols pyrans and preparation method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242009A (en) * | 1996-12-23 | 2000-01-19 | 康宁股份有限公司 | (Benzofuran) naphthopyrans, the compositions and (CO) polymer matrices containing them |
| CN1250438A (en) * | 1997-03-21 | 2000-04-12 | 康宁股份有限公司 | Naphthopyran derivatives, compositions and (CO) polymers matrices containing same |
| CN1608216A (en) * | 2001-12-27 | 2005-04-20 | 光学转变公司 | Photochromic optical article |
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| US7189456B2 (en) * | 2004-03-04 | 2007-03-13 | Transitions Optical, Inc. | Photochromic optical article |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1242009A (en) * | 1996-12-23 | 2000-01-19 | 康宁股份有限公司 | (Benzofuran) naphthopyrans, the compositions and (CO) polymer matrices containing them |
| CN1250438A (en) * | 1997-03-21 | 2000-04-12 | 康宁股份有限公司 | Naphthopyran derivatives, compositions and (CO) polymers matrices containing same |
| CN1608216A (en) * | 2001-12-27 | 2005-04-20 | 光学转变公司 | Photochromic optical article |
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