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电子转移络合物
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  charge transfer complex
     The factors, which lead to reduction of charge transfer complex (CTC), are contributed to decreases of polymerization rate and MAH content.
     升高温度、增加溶剂用量和降低马来酸配含量等有利于减少体系中电子转移络合物(CTC)的因素均利于树脂共聚物组成的均一。
短句来源
     Novel hyperbranched alternating copolymers were suc- cessfully synthesized via living controllable radical copolymerization of the charge transfer complex made from NPMI and PCMS while PCMS was used as an inimer.
     以PCMS作为引发剂单体,通过原子转移自由基聚合(ATRP)引发NPMI-PCMS电子转移络合物(CTC)进行活性可控超支化共聚合.
短句来源
  “电子转移络合物”译为未确定词的双语例句
     Reporter suggested that the reaction process be CT process,by comparison and experiment.
     通过比较和实验 ,该反应过程为一电子转移形成电子转移络合物过程。
短句来源
     The activities of monomers and amines may be arranged in the following descending order as:Monomer: AN > MA > VA > St amine: DMT>DMA>DMB>DNAIt is revealed that both the electro-negative group on the double bond of monomer which acts as an acceptor arid the electro-positive group on the nitrogen atom of amine which acts as a donor would effectively increase the rate of photopolymerization.
     不同单体的活性次序是: AN>MA>VA>St 不同芳香叔胺的活性次序是: DMT>DMA>DMB>DNA 表明单体双键电子云密度越小,芳香叔胺氮原子上电子云密度越大,越容易形成激发态电子转移络合物,从而越容易聚合。
短句来源
     So it is very possible for large scale application to separate EPA and DHA in industry. Discuss the separation mechanism, we found that as electron lacked group, 3,5 dinitro benzoylchloride combinated to EPA and DHA with tran electron complex action, which is the weak action among molecular.
     作者对分离机理的研究表明 :缺电子基团 3,5 -二硝基苯甲酰氯与EPA、DHA形成电子转移络合物 ,电子转移络合物作用是一种弱的分子间作用力。
短句来源
     A quantitative treatment method was proposed to deal with the alternating radical copolymerization with the participation of charge-transfer complex (CTC), which not depend on the mechanisms and control factors of radical termination.
     提出了不依赖于链终止反应控制方式和链终止机理的有电子转移络合物(CTC)参加聚合的交替共聚合动力学模型的数学处理方法,该处理方法中不存在近似假设,通用于各种交替共聚动力学模型的定量处理.
短句来源
     The results indicate that the fluorescence emitting is attributed to the charge transfer transition from nitrogen to aromatic ring.
     结果表明,NPN的荧光光谱表现出明显的溶剂效应,认为其发生了从电子给体N原子到电子受体芳环之间的分子内电子转移,形成分子内电子转移络合物;
短句来源
  相似匹配句对
     Structural Effect for Electronic Spectrum of n-σ Charge Transfer Complex
     n-σ型电荷转移络合物电子光谱的结构效应
短句来源
     Single Electron Transfer Reactions
     单电子转移反应
短句来源
     SINGLE ELECTRON TRANSFER AND NITRATION REACTION
     单电子转移和硝化反应
短句来源
     CHARACTERIZATION OF THE CHARGE TRANSFER COMPLEXES OF FULLERENE WITH DONORS
     富勒烯[60]与电子给体电荷转移络合物的特性(英文)
短句来源
     A Study on the Charge Transfer Complex of 9-Benzylidene Fluorene with Strong Electron Acceptors
     9—苄叉芴与强电子受体的电荷转移络合物的研究
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  charge transfer complex
The reason for its appearance was considered to be either the formation of a charge transfer complex between ThDP and tryptophan (phenylalanine) residue or stacking interaction between the residues of aromatic amino acids.
      
The structure of a charge transfer complex (CTC) formed by a bis-crown-containing stilbene (1) and a dipyridylethylene derivative (2) is studied by surface-enhanced Raman scattering spectroscopy.
      
At initial distances exceeding 0.25 nm, a weakly bound charge transfer complex with almost complete retention of the properties of the individual molecules is formed.
      
In the NLC sensitized by a fullerenecontaining charge transfer complex, the order parameter at temperatures 10 K below the nematic-isotropic phase transition exhibits an increase and exceeds the value for the initial liquid crystal.
      
Unlike the charge transfer complex of Krongauz, the decoloration process of the dimers or J-aggregates cannot be described by an exponential or a two-exponential kinetics, but obey half-order kinetics very well.
      
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  eda complex
I2 outer complex to an inner electron donor-acceptor (EDA) complex, followed by fast reaction of the inner complex with iodine to form a triiodide ion, as follows:
      
The results prove the destabilizing influence of C(NO2)4 on the EDA complex of ferrocene and CCl4.
      
The electron donor acceptor (EDA) complex of ferrocene and tetranitromethane and its dissociation to the ferricenium cation (FcH+) were studied as a function of the solvent, the initial C(NO2)4 concentration and reaction time.
      
Electron donor-acceptor (EDA) complex (Na+)4(FePc4-)/NaY was prepared from FePc/NaY by the reaction with sodium-naphthalene (Na+)(C10H8-).
      
They gave a higher trans/cis ratio of 2-butenes in butadiene hydrogenation compared with the EDA complex on the external surface of NaY.
      
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The UV absorption spectra of the mixtures of aromatic compounds—benzene,toluene,isobutylbenzene,p-xylene,xylene(mixture),mesitylene,aniline,benzaldehyde,and anthracene with molecular oxygen have been investigated.It was found that in agree-

作者研究有机物-氧混合体系的电子光谱。在所测量的九种芳香族化合物中除苯甲醛和蒽外,均观察到以分子氧作为电子受主的电子转移光谱。并证明这些光谱的频率与电子施主的电离势之间有直线关系。分析芳香族化合物β-,p-和α-谱带的激发态和最低三重态的能量~βE_1,~pE_1,~αE_1和 (?)E_1与这些有机物的电离势 I 之间的关系。找出有机物本征电子光谱和其电子转移光谱也有联系:1.除蒽和苯甲醛外,所有已观察到的有机物与分子氧的电子转移光谱的频率(?),包括 Evans 和 Tsubomura 等的结果在内,均低于有机物本征吸收的频率。2.说明蒽-氧和苯甲醛-氧的(?)未被测出的原因是由于蒽和苯甲醛的本征吸收谱带所掩盖。3.只有多环芳烃的 ~pE_1-I 和~3E_1-I 有直线关系。从而得出其~pE_1,~3E_1,(?)和 I 之间相互的线性关系。4.从苯甲醛和蒽的本征吸收以及蒽-氧电子转移络合物位能曲线,讨论其光致自动氧化的初级反应。

We have found that DMT would act as active initiator for the photopolymeriza-tion of acrylonitrile. The sensitization effect of various aromatic tertiary amines on the photoplymerization of AN has been studied. The electro-positive group on the benzene ring will increase the activity of the amine while the electro-negative group will decrease it. The activities of various amines have been found in the following decreasing order:N, N-dimethyltoluidine (DMT) >N, N-dmethyl-p-hydroxyethyltoluidine (DHET) > N, N-dimethylaniline...

We have found that DMT would act as active initiator for the photopolymeriza-tion of acrylonitrile. The sensitization effect of various aromatic tertiary amines on the photoplymerization of AN has been studied. The electro-positive group on the benzene ring will increase the activity of the amine while the electro-negative group will decrease it. The activities of various amines have been found in the following decreasing order:N, N-dimethyltoluidine (DMT) >N, N-dmethyl-p-hydroxyethyltoluidine (DHET) > N, N-dimethylaniline (DMA) > N, N-dimethylamino ben zaldehyde (DMB) >N, N-dimethyl-p-nitroaniline (DNA).The mechanism of photoplymerization of AN initiated with aromatic tertiary amine belongs to the free radical type in nature, and the rate of polymerization is proportional to the 0.66th power of concentration of amine. Within the range of 10-2-10-4 M in the concentration of amine the reciprocal of average degree of polymerization is proportional to the 0.5th power of concentration of amine. The tentative mechanism of initiation has been proposed. The formation of initiating radical species may be ascribed to the decomposition of the excited charge transfer complex (exciplex) from the excited state of aromatic tertiary amine with the monomer molecule of acrylonitrile.

我们发现芳香叔胺是丙烯腈聚合极有效的光引发剂。芳香叔胺苯环上氢被正性基取代时,引发能力增加,被负性基取代时,引发能力下降。下列胺的活性次序是:N,N-二甲基对甲苯胺(DMT)>N,N-二羟乙基对甲苯胺(DHET)>N,N-二甲基苯胺(DMA)>N,N-二甲胺基苯甲醛(DMB)>N,N-二甲基对硝基苯胺(DNA)。芳香叔胺引发丙烯腈光聚合属自由基机构,聚合速度与叔胺浓度的0.66次方成正比。在叔胺浓度为10~(-2)—10~(-4)M范围内,聚合物平均聚合度的倒数与叔胺浓度的0.5次方成正比。初步认为在紫外光激发下,芳香叔胺与丙烯腈分子生成激发态电子转移络合物,再分解产生自由基,引发丙烯腈聚合。

The polymerization mechanism of various vinyl monomers in the presence of aromatic tertiary amines has been studied. It was found that the mechanisms of different monomers are varied with the structure of monomer. Those monomers, such as Methacrylic esters, containing a-CH3 on the vinyl carbon atom could be polymerized with aromatic tertiary amine in the absence of light, while the monomers without a-CH3 group, such as methyl acrylate, acrylonitrile etc. would polymerize only under light.The mechanism of former...

The polymerization mechanism of various vinyl monomers in the presence of aromatic tertiary amines has been studied. It was found that the mechanisms of different monomers are varied with the structure of monomer. Those monomers, such as Methacrylic esters, containing a-CH3 on the vinyl carbon atom could be polymerized with aromatic tertiary amine in the absence of light, while the monomers without a-CH3 group, such as methyl acrylate, acrylonitrile etc. would polymerize only under light.The mechanism of former case has been proposed that the a-CH3 gronp will be first oxidized by amine-O3 complex to the corresponding hydroperoxide which then reacts with amine as redox system to produce the free radical species for initiation.Since in the later case there is no such group to be oxidized, thus the mechanism has been proposed that the excited charge transfer complex (exciplex) between monomer and amine will be formed under irradiation and then decompose to produce free radical species for initiation.The structural effect, both of the monomer and of the amine, on the rate of pho-topolymerization were studied. The activities of monomers and amines may be arranged in the following descending order as:Monomer: AN > MA > VA > St amine: DMT>DMA>DMB>DNAIt is revealed that both the electro-negative group on the double bond of monomer which acts as an acceptor arid the electro-positive group on the nitrogen atom of amine which acts as a donor would effectively increase the rate of photopolymerization.

不同烯类单体在芳香叔胺存在下的聚合机构不一样。甲基丙烯酸甲酯等有α-甲基的烯类单体在不照光的条件下即可被芳香叔胺引发聚合,其聚合机构认为是首先α—甲基被胺-氧复合物氧化,生成单体过氧化物。再与胺形成氧化还原体系,分解产生自由基。 丙烯酸酯,丙烯腈等没有α-甲基的单体,只有光照时才被芳香叔胺氧化聚合,不光照时完全不聚合。这是因为这些单体不被胺-氧复合物氧化。光照下聚合的机构认为是因光的激发,这些单体与芳香叔胺形成电子转移激发络合物,再分解产生自由基。 研究了单体结构,胺结构对光聚合速度的影响。不同单体的活性次序是: AN>MA>VA>St 不同芳香叔胺的活性次序是: DMT>DMA>DMB>DNA 表明单体双键电子云密度越小,芳香叔胺氮原子上电子云密度越大,越容易形成激发态电子转移络合物,从而越容易聚合。

 
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