极性溶剂
- 名polar solvent
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并且表面包覆油酸的CeO2纳米粒子易溶于弱极性溶剂,不易溶于极性溶剂。
Moreover , CeO2 nanoparticles coated with oleic acid are easy to dissolve in weak polar solvent , not in polar solvent .
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用非共价法,在极性溶剂中,以丙烯酰胺作功能单体,以强极性化合物槲皮素为模板,制备了分子烙印聚合物(MIP)。
A molecularly imprinted polymer ( MIP ) was prepared using quercetin as the template and acrylamide as the hydrogen-bonding functional monomer in a polar solvent .
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在强极性溶剂中,该类配合物可发生H聚集;
H-aggregation occured in strong polar solvents .
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用PCM模型在不同极性溶剂条件下对化合物激发态进行计算。
Then excited states of compounds in different solvents have been calculated by PCM .
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电导法和光谱法研究季铵盐Gemini表面活性剂在非极性溶剂中的聚集
Aggregation of the Quaternary Ammonium Gemini Surfactants in Apolar Solvent Studied by Conductivity and Spectroscopy
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而分散在非极性溶剂中的ZnO量子点通过蒸发溶剂可以得到疏水的透明半导体荧光薄膜。
When these ZnO QDs are dispersed in nonpolar solvents they can self-assemble into hydrophobic and transparent luminescent semiconductor films upon evaporation of solvent .
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并讨论了非极性溶剂&异辛烷和正癸烷对CV碱性褪色反应动力学的影响。
The effect of nonpolar solvents of isooctane and decane on the kinetics of CV alkaline fading has been discussed . 3 .
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PA6含量对共混体系的阻隔性能影响显著,当PA6占30份以上时,HDPF/PA6合金阻隔非极性溶剂的性能大幅度提高。同时,PA6的加入对合金有一定的增强作用。
With the adding of PA6 content , the harrier properties of HDPE / PA6 alloys have been improved evidently .
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在非极性溶剂/亲水基底的界面处反应,成功的合成了由TiO2纳米线组成的分级微米球,并对它的生长机理进行了讨论。
In the non-polar solvent / hydrophilic substrate interfacial reaction , we successfully synthesize hierarchical TiO2 nanostructures consisting of nanowire , and its growth mechanism was discussed .
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这种聚酰亚胺很容易溶解于诸如NMP、DMAC和DMF等强极性溶剂。
Polyimides thus obtained are soluble in strong polar solvents , such as NMP , DMAc and DMF .
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在DCB法中,使用弱极性溶剂THF时,反应3h,连接率可达99%。
While in DCB method , the highest yield was 99 % , which was achieved by THF after 3h .
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结果表明,此聚酰亚胺可溶于DMF、DMAc等极性溶剂;
The results showed that the PI was readily soluble in polar solvents such as DMF , DMAc and NMP etc.
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在极性溶剂水中形成簇分子时溶剂分子的数目和位置能对有机物pKa也产生相当大的影响。
The number and the position of the solvent molecule in the cluster also can affect the organic 's pKa value .
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极性溶剂如四氢呋喃会溶解PEI层,而非极性溶剂如石油醚又不能溶解丁烯酸钴。
Electropolar solvent such as THF may destroy the polyetherimide layer , while non-electropolar solvent such as petroleum ether cannot solve vinyl acetic acid cobalt .
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另外,对分散在极性溶剂中的ZnO量子点用PVP进一步进行修饰实现了其水溶性。
In addition , the surfaces of the ZnO QDs dispersed in polar solvents can be further modified with poly ( vinyl pyrrolidone )( PVP ) to achieve aqueous stability .
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在非极性溶剂中加一定比例的THF以后,该体系也能合成分子量范围为10~4~10~5的窄分布聚苯乙烯。
By adding THF to the above systems we also obtained the narrow distribution polystyrene with molecular weight in the range of 104-105 .
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该共缩聚型聚酰亚胺在非质子强极性溶剂中均具有良好的溶解性,玻璃化温度(Tg)大于250℃,10%的热分解温度(Td)为5197℃。
The copolyimide was very soluble in strong polar aprotic solvents . Its glass transition temperature was above 250 ℃ and 10 % thermal decomposition temperature was 519.7 ℃ .
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杂多阴离子的相转移化学Ⅰ.取代的Keggin及Dawson结构杂多阴离子在非极性溶剂中的溶剂化行为研究
Phase Transfer Chemistry of Heteropolyanions ⅰ . Research on Solvation Behavior of Substituted Keggin and Dawson Anions in the Non-polar Solvents
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共聚物在N,N-二甲基酰胺(DMF)、二甲基亚砜(DMSO)、N-甲基-2-吡咯烷酮(NMP)等极性溶剂和浓H2SO4中有良好的溶解性。
The copolymers show good solubility in N , N-dimethylformamide ( DMF ), dimethyl sulphoxide ( DMSO ), N-methyl-2-pyrrolidone ( NMP ) and some inorganic acids like H2SO4 .
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脂肪酶candidasp.99-125在极性溶剂中易失活,对映体过量值ee与溶剂的分子体积、logP都呈负相关性。
The Candida sp.99-125 lipase deactivated easily in organic solvent . A significant negative correlation between enantiomeric excess ( ee ) and both of the molecular volume and Log P were observed .
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二氢杨梅素酯化物在极性溶剂中清除DPPH自由基和H2O2的能力比二氢杨梅素低,酯化物的抗氧化活性随着酯化程度的增加呈下降趋势;
The scavenging effects of DMYL on DPPH free radicals and H2O2 in polar solvents were both weaker than those of DMY , decreasing with the increase of esterification degree .
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在极性溶剂(丙酮)或非极性溶剂(甲苯)中,用三甲基氯硅烷对全硅介孔分子筛MCM-41进行了表面修饰。
The pure silica mesoporous molecular sieve ( MCM-41 ) was modified on the surface by trimethylchlorosilane in polar solvent ( acetone ) and apolar solvent ( toluene ) .
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7-二乙氨基-4-甲基香豆素(DAMC)在聚合物溶液中,荧光量子效率(φf)在非极性溶剂中与聚合物的含量无关;
The fluorescence quantum yields (φ f ) of 7-diethylamino-4-methylcoumarin ( DAMC ) in polymer solutions were independent of the polymer content when the solvents were non-polar .
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此外,强极性溶剂CD3CN不利于羰基化合物三线态的产生,因此从一定程度上抑制了CIDNP极化信号的产生。
The polarity of solvent disfavored the produce of triplet carbonyl compounds , restraining the CIDNP polarizations .
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p-HPcZn具有较好的水溶性,可溶于多种极性溶剂中。
It can soluble in water and some strong polar solvents .
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本文测量了染料分子DCM、甲酚紫、DODCI和DTDCI在极性溶剂中的微微秒时间分辨荧光光谱;
The picosecond time-resolved fluorescence spectra are measured for DCM , orysel violet , DODCI and DTDCI in polar solvents .
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硅凝胶是一种极性溶剂,含有大量Si-OH基,可以与黑色染料结构中含有的氨基和羟基相互之间形成氢键。
The contained amino group and hydroxyl group in black dyes can form hydrogen bond with Si-OH group contained in polar silica gel .
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以双酚A和4,4′-双(3-硝基苯二甲酰亚氨基)二苯醚在非质子极性溶剂中的取代反应合成了聚醚酰亚胺(PEI),并对其结构作了鉴定。
Polyetherimide ( PEI ) was synthesized from Bisphenol A and 4 , 4 ' - bis ( 3-nitrophthalimido ) diphenyl ether by the nitro-displacement reaction in a polar aprotic solvent , and its structure was identified .
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文章测试了5种磺化金属酞菁在7种不同极性溶剂中的吸收光谱,用Nicol理论研究了金属酞菁染料的溶剂效应。
The absorption spectra of five sulfonated phthalocyanines in seven different solvents are measured , and the solvent effects of phthalocyanines are investigated using Nicol theory .
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本文以定量检测甲基丙烯酸甲酯(MMA)本体聚合反应过程中的增长自由基为例,介绍了如何用电子顺磁共振(EPR)方法定量检测极性溶剂中的低浓度自由基。
Follow the example of quantitative detecting methyl methacrylate ( MMA ) propagating radi-cal in bulk polymerization process , how did quantitative detection of the radical of low concen-tration in the polarity solvent by the ESR method is introduced .