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anjie2009金蟲 (小有名氣)
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求大俠們幫忙翻譯一段文字（漢語翻譯成英語）
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有機共軛聚合物在最近20年發(fā)展迅速，其中熒光共軛聚合物是其中總要的一個分支，熒光聚合物既具有聚合物的性質(zhì)，又具有熒光性質(zhì)，是一類復(fù)合材料，所以它的發(fā)展具有重大意義。通常的熒光聚合物是大的共軛體系和苯基或芴基交替出現(xiàn)而形成共聚高分子。如果要開發(fā)各種不同性能的熒光聚合物，對于熒光聚合物的設(shè)計，引入雜原子是一種新思路，因為雜原子和有機共軛體系的軌道重疊是改變共軛體系電子結(jié)構(gòu)，進而改變光電性能，由于雜原子的電負(fù)性不同，它們在熒光方面表現(xiàn)出不同的性質(zhì)，另外由于雜環(huán)結(jié)構(gòu)的物質(zhì)雜環(huán)活性高，可以引入其他基團，雜環(huán)聚合物和白質(zhì)結(jié)合，能跟蹤物質(zhì)在細(xì)胞中的代謝，也能用作生物化學(xué)的檢測。由于其他熒光聚合物具有酸堿敏感、波長短、光穩(wěn)定性不好的缺點，而氟化硼絡(luò)合二吡咯甲川類（Boron-dipyrromethene ，簡稱BODIPY）熒光物質(zhì)是一類新興的優(yōu)秀熒光染料，具有較高的熒光量子產(chǎn)率和摩爾消光系數(shù)，并且表現(xiàn)出很好的光穩(wěn)定性。本論文以BODIPY為基礎(chǔ)，合成2,6-二溴代BODIPY，再通過SUZUKI偶合反應(yīng)，合成了5種熒光聚合物，并分別對這些聚合物的光譜性能、光學(xué)穩(wěn)定性和熱穩(wěn)定性進行了細(xì)致的研究。此外，還進一步合成了六種的含吸電子基團的熒光物質(zhì)，并對比它們和含有供電子基團的BODIPY的熒光性能。 合成了兩種含有雜環(huán)結(jié)構(gòu)（噻吩環(huán)，呋喃環(huán)）熒光聚合物，研究了它們的溶液光譜性質(zhì)，固體光譜性質(zhì)，熱穩(wěn)定以及單體和聚合物之間的性質(zhì)差異。結(jié)構(gòu)表明，含有雜環(huán)結(jié)構(gòu)的聚合物在不同溶劑中吸收和發(fā)射波長都有一定變化，這主要是雜原子和溶劑互相作用，而產(chǎn)生的溶劑化效應(yīng)，含雜環(huán)結(jié)構(gòu)的聚合物在有機溶劑中溶解性不好。，含有甲基，正戊基，正十一烷基的3種聚合物，通過引入不同碳原子的烷基研究它們的在有機中的光譜性質(zhì)，溶解性和相容性，熱穩(wěn)定性。研究表明聚合物在不同溶劑中的吸收和發(fā)射波長變化不明顯，這主要是沒有活潑基團，溶劑化作用削弱，從溶解性來看，長碳鏈的溶解性最好。 我們對比了BODIPY，溴代BODIPY，聚合BODIPY在熒光和熱穩(wěn)定性的差異，溴代BODIPY由于溴原子的引入，熒光波長紅移，但是量子產(chǎn)率降低了將近50%，聚合物比溴代單體波長也發(fā)生紅移，量子產(chǎn)率有一定的提高。從熱重分析來看，聚合物穩(wěn)定性高于BODIPY和單體的穩(wěn)定性。對合成的化合物通過核磁共振。質(zhì)譜進行表征，合成的聚合物通過核磁共振進行表征，測量了其分子量的分布。 |
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仙鶴之家
木蟲 (正式寫手)
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2樓2012-02-29 10:08:21
769020087
木蟲 (小有名氣)
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- 專業(yè): 礦物學(xué)(含礦物物理學(xué)）
【答案】應(yīng)助回帖
anjie2009(金幣+100, 博學(xué)EPI+1): ★★★很有幫助 非常感謝，要是能用一些正宗的英語就更好l了，有點太直白了，呵呵， 2012-02-29 19:49:22
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Organic conjugated polymer development has a great significance and is developing rapidly in the latest 20 years with a important branch of fluorescent conjugated polymer, which is a composite material with a property of polymer and fluorescence. Ordinary fluorescent polymer is a copolymer consists of the appearance of huge conjugated system and phenyl or fluorenyl alternately. For the design of fluorescent polymer, bringing in the heteroatom supplies a new method. On one hand, orbital overlap of heteroatom and organic conjugated system changes the electric structure and then the photoelectric properties and their different properties of fluorescence result of the difference of electronegativity of heteroatom. On the other hand, because of the perfect material heterocyclic activity we can import some other groups and the combination of heterocycle polymer and can both track metabolism of materials in the cell and be used in the detection of biochemistry. Boron-dipyrromethene(BODIPY) flourescent material is a new fluorescent dye with a high rate of flourescent quantum yield, molar extinction coefficient and good photo-stability which avoid the disadvantages of the other fluorescent polymers such as acid-base sensitivity, short wavelength and optical instability. This paper study the spectrum property, optical and heat stability of these five fluorescent polymers, which is synthesized based on BODIPY, synthesize 2,6 – bromide BODIPY and coupling reaction. What’s more, we also synthesize six fluorescent polymers with electron-withdrawing group and compared with BODIPY with electron-donating group in fluorescence. We also synthesize two fluorescent polymers with heterocycle structure (thiophene, furan) and study the solution and solid spectrum property, heat stability and the differences between monomer and polymer. The structure shows that the wavelength of emission and absorption of polymers with heterocycle structure has changed a bit. This mainly caused by salvation effect , interaction of heteroatom and dissolvent, that reduce the dissolubility of polymer with heterocycle structure in the organic dissolvent.Study the spectrum property, dissolubility, consistency and heat stability of three polymers with methyl, pentyl and 1-undecyl by bringing in alkyl with different carbon atom. The search shows that the lack of active group and the reduction of solvent effect have little effect on the wavelength of emission and absorption of polymers in different dissolvent. After contrasts the differences of fluorescence and heat stability of BODIPY, bromide BODIPY and polymerized BODIPY we conclude that the import of bromine atom causes the redshift of fluorescent wavelength and at the same time reduce the rate of quantum yield of 50%. But comparing the monomer of polymer and bromine, polymer also has the redshift and the rate of quantum yield changes better. Thermal Gravimetric Analysis shows that the heat stability of polymer is better than BODIPY and monomer. Nuclear magnetic resonance of synthetic polymer, characterized the mass spectrum, characterized the synthetic polymer by nuclear magnetic resonance, measure the distribution of the molecular weight. |
3樓2012-02-29 11:59:36
anjie2009
金蟲 (小有名氣)
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4樓2012-03-19 07:04:37
abc8148
木蟲 (著名寫手)
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【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
anjie2009: 金幣+60, ★★★很有幫助 2012-03-19 21:36:10
anjie2009: 金幣+60, ★★★很有幫助 2012-03-19 21:36:10
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Organic conjugated polymer in recent 20 years development is rapid, including fluorescence conjugate polymer is one of the total to a branch, fluorescence polymer both has the nature of the polymer, also has the fluorescence properties, is a kind of composite material, so it's development is of great significance. The fluorescent polymer is usually the conjugate system and fluorene and phenyl or appear alternately and form copolymerization polymer. If you want to develop all kinds of different performance of fluorescent polymer, for the design of the fluorescent polymers, the introduction of miscellaneous atoms is a new way of thinking, because miscellaneous atoms and organic conjugated system is to change the orbit of the overlap conjugate system electronic structure, and change the photoelectric performance because of electrical noise atoms negative different, they show the fluorescent different nature, also because of heterocyclic structure material heterocyclic high activity, may introduce the other group, heterocyclic polymer and white matter combination, can keep track of material in the cells metabolism, also can be used as biological chemical testing. Because other fluorescence polymer with soda acid sensitive, shorter wavelengths, light stability bad faults, and fluoride Boron complexation two JiaChuan pyrrole.the class (Boron-dipyrromethene, hereinafter referred to as BODIPY) fluorescent material is a kind of excellent new fluorescent, has the high fluorescence amount when zi chan rate and Moore the extinction coefficient and that shows very good light stability. This paper based on BODIPY, synthetic 2, 6-two bromination BODIPY, again through the SUZUKI matches were synthesized by the reaction of 5 kinds of fluorescence polymer, and of the spectrum of the polymers are performance, stability and thermal stability optical detailed study. In addition, still further synthesis of six kinds of containing fluorescent substance of suction electronic group, and contrast them and contain the BODIPY for electronic groups of fluorescence performance. Synthetic two contain heterocyclic structure ( thiophene ring, furan loop) fluorescence polymer, study their solution optical properties, solid optical properties, thermal stability and monomer and the nature of the differences between the polymer. Structure shows that contains the heterocyclic polymer structure in different solvents absorption and emission wavelength are certain change, this basically is miscellaneous atoms interact with each other and solvent, and produce the effect of the solvent, contain the heterocyclic polymer in the structure of organic solvents solubility is bad. , contain methyl, are e base, is 11 alkyl 3 kinds of polymer, through the introduction of different alkyl carbon atoms to study their in the optical properties of organic, solubility and compatibility, thermal stability. Research shows that polymer in different solvents in the absorption and emission wavelength change is not apparent, this basically is no lively group, solvent relaxation effect weakens, from solubility to see, long carbon chain solubility is the best. We compared the BODIPY, bromination BODIPY, BODIPY polymerization in fluorescence and thermal stability of the difference, bromination BODIPY due to the introduction of bromine atoms, fluorescence wavelength redshift, but quantity when zi chan rate by nearly 50%, polymer than bromination monomer wavelength can happen redshift, quantity when zi chan rate was improved. From thermogravimetric analysis to see, polymer stability and the stability of the BODIPY higher than monomer. For synthetic compounds through the nuclear magnetic resonance (NMR). Mass spectrometry were synthetic polymer characterized by nuclear magnetic resonance (NMR), the molecular weight distribution measurement. Keywords: fluorescent other thermal stability electricity negative polymer |
5樓2012-03-19 08:43:29
alicejie2005
銀蟲 (小有名氣)
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【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
anjie2009: 金幣+40, ★★★很有幫助 2012-03-19 21:36:25
anjie2009: 金幣+40, ★★★很有幫助 2012-03-19 21:36:25
|
Organic conjugated polymer developed rapidly in the latest 20 years, and the fluorescent conjugated polymers which was a composite material with the character of polymer and fluorescent was a important branch of fluorescent conjugated polymer, its development had a significance. Ordinary fluorescent polymer is a copolymer consists of the appearance of huge conjugated system and phenyl or fluorenyl alternately. For the design of different characteristic fluorescent polymer, bringing in the heteroatom supplies a new method. Because the orbital overlap of heteroatom and organic conjugated system changes the electric structure and the photoelectric properties and their different properties of fluorescence result of the difference of electronegativity of heteroatom. Furthermore, due to the high material heterocyclic activity, we can import some other groups to combining the heterocycle polymer and can both track metabolism of materials in the cell, it and be used in the detection of biochemistry. Boron-dipyrromethene(BODIPY) flourescent material is a new fluorescent dye with a high rate of flourescent quantum yield, molar extinction coefficient and good photo-stability which avoid the disadvantages of the other fluorescent polymers such as acid-base sensitivity, short wavelength and optical instability. This paper study the spectrum property, optical and heat stability of these five fluorescent polymers, which is synthesized based on BODIPY, synthesize 2, 6 – bromide BODIPY and coupling reaction. In addition, we also synthesize six fluorescent polymers with the electron-withdrawing group and compared BODIPY with electron-donating group in fluorescence. We also synthesize two fluorescent polymers with heterocycle structure (thiophene, furan) and study the solution and solid spectrum property, heat stability and the differences between monomer and polymer. The structure shows that the wavelength of emission and absorption of polymers with heterocycle structure has some change. This mainly caused by effect of salvation, interaction of heteroatom and dissolvent, that reduce the dissolubility of polymer with heterocycle structure in the organic dissolvent. Study the spectrum property, dissolubility, consistency and heat stability of three polymers with methyl, pentyl and 1-undecyl by bringing in alkyl with different carbon atom. The search shows that the lack of active group and the reduction of solvent effect have little effect on the wavelength of emission and absorption of polymers in different dissolvent. We compared the fluorescence and heat stability of BODIPY, bromide BODIPY and poymerized BODIPY, and concluded that the important of bromine atom caused the red shift of fluorescent wavelength, however, at the same time reduced the rate of quantum yield of 50%. But comparing the monomer of polymer and bromine, polymer also had the red shift and the rate of quantum yield was better. Thermal Gravimetric Analysis showed that the heat stability of polymer was better than BODIPY and monomer. We also characterized the mass spectrum, characterized the synthetic polymer by nuclear magnetic resonance, and measured the distribution of the molecular weight. |
6樓2012-03-19 08:54:15
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