CN1213672A - Synthetizing of poly-p-phenylacetylene - Google Patents

Synthetizing of poly-p-phenylacetylene Download PDF

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CN1213672A
CN1213672A CN 97116974 CN97116974A CN1213672A CN 1213672 A CN1213672 A CN 1213672A CN 97116974 CN97116974 CN 97116974 CN 97116974 A CN97116974 A CN 97116974A CN 1213672 A CN1213672 A CN 1213672A
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alkyl
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ppv
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CN1108328C (en
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王建营
李银奎
胡文祥
谭生建
龙永福
曹晔
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Military Medicine Inst Logistics Department Commission Of Science Technology
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Abstract

A hydrogen chloride removing process for synthesizing a copolymer of polypara-phenylacetylene (Co-PPV) features the copolymerization of 1,4-dichloromethyl benzene derivatives. Obtained Co-PPV can be used as electrically conductive high-molecular material, electroluminescent material, or the third non-linear optical material.

Description

Synthesizing of p-phenylene vinylene's multipolymer
Polymer electroluminescence material because of its potential can be used for big area, multicolor displaying, becomes the focus of present electroluminescent area research.This base polymer comprises following several: p-phenylene vinylene (PPV) and derivative thereof, polyvinyl carbazole (Poly (N-Vinylcarbazole), PVCz), poly-(3-alkylthrophene) (Poly (3-Alkylthiophene), P3AT), poly-(9-alkyl fluorenes) (Poly (9-Alkylfluorene), P9AF), the polyparaphenylene (Poly (p-Phenylene), PPh) etc.Wherein PPV and derivative thereof are to study and use maximum, the best base polymer of effect at present in the world.
The method of usually synthetic PPV has the polycondensation of Wittig reaction, dehydrochlorination reaction and other types.But by the Powdered often oligopolymer of PPV that these reactions obtain, insoluble not molten, machining property is poor, thereby has limited its application.
People such as Wessling have invented solubility prepolymer method, have overcome the insoluble not molten limitation of bringing of PPV; Thereby become the effective way (seeing Wessling L H andZimmerman R G, U.S.Pat.No.3,401,152 (1968)) of at present synthetic PPV and derivative thereof.But complicated polystep reaction has reduced the yield of product, and pyroreaction makes the selection of photodiode (LED) mesostroma material be restricted, and thermoplastics can not be used to assemble LED.
Thereby up to the present, also not finding effective ways to improve the solvability of PPV derivative, the problem that PPV derivative synthetic yield is low is also still unresolved (sees Wuld F and et al, U.S.Pat.5,189,136 (1993)), everything has all limited its application.
The objective of the invention is to seek the synthetic route of a feasibility, this synthetic route is to adopt the strategy of copolymerization, through dehydrochlorination, synthesizes the solubility PPV multipolymer of a series of new high yields; Overcome the low defective of insoluble and productive rate of present PPV and derivative thereof, thereby lay the foundation for the widespread use of PPV and derivative thereof.
Dehydrochlorination method of the present invention is under the highly basic effect, with 1, and the directly synthetic p-phenylene vinylene's multipolymer of 4-dichloride methyl benzene derivative.Building-up process is as follows:
Figure A9711697400031
In above-mentioned reaction formula:
R is the alkyl with 1-12 carbon atom;
R ' is any alkyl different with R, or has the alkyl of substituted radical;
R 1And R 2Be identical or different alkyl, alkoxyl group or alkyl, the alkoxyl group that has substituted radical;
R 1, R 2Also can be unsaturated substituting group, as-CH=CH-,-CCH etc.;
R 1, R 2Also can be H, halogen simultaneously or be not H, halogen, perhaps R simultaneously 1Be alkoxyl group, alkyl, and R 2Be halogen, H;
A is R ' X, and wherein X is a leavings group, as Cl, Br, I or sulfuric ester;
A does to react with I under the solvent condition at methyl alcohol or ethanol;
B is meant HCHO/HCl (dense)Or HCHO, (HCHO) n/ HCl (dense)
C is meant t-BuOK, t-BuONa, t-BuOLi, CH 3Highly basic such as ONa, KOH, NaOH are in solvent THF, DMF (N, dinethylformamide) or DMSO (methyl-sulphoxide).
According to above-mentioned reaction formula, the first step reaction of the present invention is the synthetic compound I, as p methoxy phenol sodium.This step reaction can be carried out according to usual method, and as starting raw material, MOPH is dissolved in ethanol or the methyl alcohol, at NaOH or CH with p methoxy phenol (MOPH) 3Reflux among the ONa and promptly get chemical compounds I.
Above-mentioned reaction is chilled to room temperature, and under agitation drips R ' X, back flow reaction then; Reaction finishes, and removal of solvent under reduced pressure is used 10%NaOH and washing successively, filters to obtain compound ii.
Compound ii is dissolved in a certain solvent, as 1, and the 4-dioxane, and add formaldehyde, Paraformaldehyde 96 and concentrated hydrochloric acid, direct heating stirring and refluxing 5-8 hour.The pressure reducing and steaming solvent, cooling is filtered and is promptly got the compound III.
Compound III and IV are dissolved among THF or the DMSO altogether, drip THF or the DMSO solution of t-BuOK then.Stir after 8-24 hour, in polymerization system, pour methyl alcohol into, then obtain orange-red precipitation, be the compound V.
The synthesis strategy that this paper adopts is compared with synthetic method in the past, has improved the solvability of PPV derivative significantly, and selects DMSO to make polymer solvent, makes the productive rate of PPV multipolymer be greatly improved.Monomeric synthetic aspect, adopt HCHO, (HCHO) n/ HCl (dense)As dichloromethylation reagent, improved the dichloromethylation productive rate of long-chain alkoxy substituted benzene.
Below just with PMONOPV-Co-PDMPV synthesize the concrete the present invention of elaboration of example, but the compound that the present invention relates to is not limited to this, but by the R in the following formula, R ', R 1, R 2, a, b, the determined all substances of c.
Example one: PMONOPV-Co-PDMPV's is synthetic
The first step: 1-methoxyl group-4-oxygen in ninth of the ten Heavenly Stems base benzene synthetic
18.6g (0.15mol) p methoxy phenol is dissolved in the 100mL ethanol, filling under the nitrogen condition, refluxing 30 minutes with the sodium methylate of 75mL (concentration is 2mol/L), behind the cool to room temperature, slowly dripping bromine positive nonane 40mL (about 0.13mol) of generation refluxed 12 hours; Remove ethanol then under reduced pressure, use 10%NaOH and washing successively, filter, obtain a white crystal, use ethyl alcohol recrystallization, obtain 26.6g white plates crystal (productive rate 82.0%), fusing point 50-51 ℃.
The crystalline analytical results is as follows:
IR (KBr): ν (cm -1) 600,710,820,930,1040,1100,1235,1300,1380,1430,1465,1510,1620,1840,2870,2925,2995,3030; 1H NMR (CDCl 3): δ (ppm) 6.98 (4H, unimodal, Ar-H), 3.80 (3H, unimodal ,-OCH 3), 3.90 (2H, triplet ,-OCH 2), 0.85-1.70 (17H, multiplet, C 8H 17).
Second step: 1,4-dichloride methyl-2-methoxyl group-5-oxygen in ninth of the ten Heavenly Stems base benzene synthetic
1-methoxyl group-4-oxygen in ninth of the ten Heavenly Stems base benzene of 5.0g (0.02mol) is dissolved in 80mL 1, in the 4-dioxane, adds successively under the normal temperature (HCHO) n, HCHO (being 0.025mol) and 100mL concentrated hydrochloric acid, stir, direct heating refluxed 5 hours; Be chilled to room temperature, filter and obtain the canescence crystal, and respectively wash 2-3 time with the second alcohol and water successively, use ethyl alcohol recrystallization, obtain 5.3g white crystal (productive rate 76.3%), fusing point 68.2-69.5 ℃.
The crystalline analytical results is as follows:
IR (KBr): ν (cm -1) 610,690,740,880,1030,1230,1263,1410,1475,1510,1540,1740,2885,2935,2990,3030; 1H NMR (CDCl 3): δ (ppm) 7.0 (2H, unimodal, Ar-H), 4.80 (4H, closely bimodal, 2 * CH 2Cl), 4.10 (2H, triplet ,-OCH 2), 3.90 (3H, unimodal ,-OCH 3), 1.38-1.95 (10H, multiplet ,-OCH 2(CH 2) 5), 1.0 (3H, unimodal ,-OCH 2(CH 2) 5CH 3).
The 3rd step: 1,4-dichloride methyl-2-methoxyl group-5-oxygen in ninth of the ten Heavenly Stems base benzene and 1,4-dichloride methyl-2, the synthesizing of the multipolymer of 5-dimethyl benzene (PMONOPV-Co-PDMPV)
Take by weighing 1 respectively, 4-dichloride methyl-2,5-dimethyl benzene and 1,4-dichloride methyl-2-methoxyl group-each 2mmol of 5-oxygen in ninth of the ten Heavenly Stems base benzene is dissolved among the dry DMSO of 30mL jointly, heating in water bath to 45 ℃; T-BuOK 4g (concentration 80-90%) with new system is dissolved among the dry DMSO of 30mL simultaneously, stirs, and low-grade fever is dissolved it fully; The DMSO solution of t-BuOK slowly is added drop-wise in the monomer solution, and high-speed stirring, solution generation obvious color changes: blue-greenish colour before this, and then become brown-green, become yellow then, and become orange redly at last, in 5-10 minute, produce a large amount of precipitations; Continuation adds 250mL methyl alcohol at last 45 ℃ of stirred in water bath 12 hours in reactor, continue to stir 15 minutes after-filtration, and red solid is given a baby a bath on the third day after its birth inferior with warm ethanol, and vacuum-drying is weighed as 0.73g, productive rate 90.2%.
The product analysis result is as follows:
UV (CHCl 3): λ (nm) 475; IR (KBr): ν (cm -1) 710,870,965,1040,1200,1240,1350,1415,1450,1500,1530,2860,2940,3040; 1H NMR (CDCl 3): δ (ppm) 7.39 (unimodal, Ar-H), 7.20 (unimodal ,-CH=CH-), 4.20 (triplet ,-OCH 2-), 3.95 (unimodal, Ar-OCH 3), 2.35 (unimodal, Ar-CH 3), 1.30-1.90 (multiplet ,-OCH 2(CH 2) 7CH 3), 0.95 (unimodal ,-OCH 2(CH 2) 7CH 3).
The thermal characteristics of example two: PMONOPV-Co-PDMPV
The TG-DTA analysis revealed, the temperature of maximum decomposition place of PMONOPV-Co-PDMPV is 450 ℃, thereby has higher thermostability.Do not observe the fusion endotherm(ic)peak, can not carry out melt-processed; The pyrolysis of this multipolymer is an exothermic process.
Example three: the preparation of polymeric film
The first step: the preparation of polymers soln
PMONOPV-Co-PDMPV has good solvability in chloroform, can be made into the solution of high density; Experiment finds that concentration is that the solution film forming of 0.2-2.0% (wt/wt) is better.So the multipolymer of preparation in the above-mentioned example one is dissolved in an amount of chloroform, be made into the solution that concentration is 1.0% (wt/wt), place standby.
Second step: film forming
Adopt rotation-casting method, at the open and flat one layer of polymeric liquid film of glass surface (being coated with ITO) of a cleaning, vacuum-drying obtains even, a fine and close polymeric film.This polymeric film has excellent conducting performance.
The electroluminescent of example four: PMONOPV-Co-PDMPV
Method according to example three, prepare one deck PMONOPV-Co-PDMPV film at the glass surface that is coated with ITO, vacuum evaporation one deck area is the Mg of 2mm * 2mm on polymeric film again: the Ag electrode, connect forward dc voltage, under the room temperature normal illumination conditions, send visible light from back electrode in the time of 12 volts.
More than the example of Shi Shiing shows, adopts the dehydrochlorination method can more convenient ground synthesizing soluble p-phenylene vinylene multipolymer; And adopt DMSO to make solvent, obtain the polymkeric substance of high yield; Thereby overcome the insoluble and low defective of productive rate of PPV derivative, for the widespread use of PPV derivative is laid a good foundation.
The present invention also provides a kind of novel dichloromethylation reagent-HCHO, (HCHO) n/ HCl (dense)
The material of the present invention's preparation is a class conjugated polymers, can be used as semiconductor material, electroluminescent material and third order non-linear optical material, has a extensive future at semi-conductor and optoelectronic areas.

Claims (6)

1. new p-phenylene vinylene's multipolymer and derivative ⅰ thereof.
Wherein:
R is the alkyl with 1-12 carbon atom;
R ' is any alkyl different with R, or has the alkyl of substituted radical;
R 1And R 2Be identical or different alkyl, alkoxyl group or alkyl, the alkoxyl group that has substituted radical;
R 1, R 2It also can be unsaturated substituting group;
R 1, R 2Also can be H, halogen simultaneously or be not H, halogen, perhaps R simultaneously 1Be alkoxyl group, alkyl, and R 3Be halogen, H.
2. the preparation method of compound in the claim 1 is comprising the preparation of corresponding monomeric compound ⅱ; The synthetic of compound ⅰ realized by the dehydrochlorination method.
3. the preparation method of compound in the claim 1, alkaline reagents wherein can be t-BuOK, t-BuONa, t-BuOLi, CH 3ONa, KOH, NaOH; Solvent can be THF, DMF (N, dinethylformamide) and DMSO (methyl-sulphoxide).
4. the application of the compound in the claim 1 aspect semi-conductor, electroluminescent and third-order non-linear material.
5. the preparation of compound ⅱ is at HCHO, (HCHO) in the claim 2 n/ HCl (dense)In carry out.
6. the application of the DMSO in the claim 3 in the homopolymer of synthetic PPV derivative.
CN97116974A 1997-10-06 1997-10-06 Synthetizing of poly-p-phenylacetylene Expired - Fee Related CN1108328C (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1329419C (en) * 2003-10-08 2007-08-01 北京师范大学 Color adjustable poly(p-phenylene vinylene) copolymer electroluminescent materials and preparation method and use thereof
CN100335685C (en) * 2005-02-01 2007-09-05 东北师范大学 Poly(p-phenylene vinylene) nano silk and method for preparing same
CN100341906C (en) * 2004-11-25 2007-10-10 中国科学院化学研究所 Polyethylene acetylene, its production and use thereof
CN100413905C (en) * 2003-03-14 2008-08-27 清华大学 Method for preparing polyphenylene vinylene derivative
CN101891855A (en) * 2010-07-09 2010-11-24 哈尔滨工程大学 Method for synthesizing novel optical-activity polyphenylacetylene using polylactic acid as side chain
CN101048884B (en) * 2004-10-28 2010-12-15 皇家飞利浦电子股份有限公司 Copolymer for charge transport layer in opto-electronic device
CN102504284A (en) * 2011-11-02 2012-06-20 黑龙江大学 Method for preparing polyphenyl acetylene microballoon spheres
CN104693424A (en) * 2015-02-12 2015-06-10 陕西师范大学 Synthetic method of conjugated polymer
US11147342B2 (en) 2018-05-31 2021-10-19 Nike, Inc. Fluid flow control devices usable in adjustable foot support systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5185100A (en) * 1990-03-29 1993-02-09 Allied-Signal Inc Conductive polymers formed from conjugated backbone polymers doped with non-oxidizing protonic acids
US5189136A (en) * 1990-12-12 1993-02-23 The Regents Of The University Of California Conducting polymer formed of poly(2-methoxy,5-(2'-ethyl-hexyloxy)-p-phenylenevinylene)
US5514878A (en) * 1994-03-18 1996-05-07 Holmes; Andrew B. Polymers for electroluminescent devices
EP0714556B1 (en) * 1994-05-19 1999-01-20 Koninklijke Philips Electronics N.V. Light-emitting diode comprising an active layer of 2,5-substituted poly(p-phenylene vinylene)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100413905C (en) * 2003-03-14 2008-08-27 清华大学 Method for preparing polyphenylene vinylene derivative
CN1329419C (en) * 2003-10-08 2007-08-01 北京师范大学 Color adjustable poly(p-phenylene vinylene) copolymer electroluminescent materials and preparation method and use thereof
CN101048884B (en) * 2004-10-28 2010-12-15 皇家飞利浦电子股份有限公司 Copolymer for charge transport layer in opto-electronic device
CN100341906C (en) * 2004-11-25 2007-10-10 中国科学院化学研究所 Polyethylene acetylene, its production and use thereof
CN100335685C (en) * 2005-02-01 2007-09-05 东北师范大学 Poly(p-phenylene vinylene) nano silk and method for preparing same
CN101891855A (en) * 2010-07-09 2010-11-24 哈尔滨工程大学 Method for synthesizing novel optical-activity polyphenylacetylene using polylactic acid as side chain
CN102504284A (en) * 2011-11-02 2012-06-20 黑龙江大学 Method for preparing polyphenyl acetylene microballoon spheres
CN104693424A (en) * 2015-02-12 2015-06-10 陕西师范大学 Synthetic method of conjugated polymer
US11147342B2 (en) 2018-05-31 2021-10-19 Nike, Inc. Fluid flow control devices usable in adjustable foot support systems

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