探讨了给电子基团对电子吸收光谱的影响。
The effect of the electron-donating groups on the electronic spectrum was investigated.
拉电子基团能使碳负离子稳定，也使C—H键的酸性增强。
Drawing electron group can stabilize carbon anion, and enhance the acid of key C-H.
吸电子基团使还原电位正移，推电子基团使还原电位负移。
Usually, the reduction potential is shifted to more positive by electron-attracting groups and to more negative by electron-repulsing groups.
在伯烷基上吸电子基团能增强硫原子与铁原子之间的化学吸附作用力。
The electron withdrawing group (F) being introduced into the alkyl groups of then-hexyl ZDDP is able to strengthen chemical adsorption between ZDDP and Fe atoms.
拉曼光谱分析结果证明：吸电子基团的存在使苯环上c -H的键能提高。
Raman spectroscopy results showed that: the presence of electron withdrawing groups improved the bond energy of C-H in the benzene ring.
探讨碱性、溶剂极性、离去基团、吸电子基团、亲核试剂的亲核性对反应影响。
There are impact factor to be discussed such as solvent polarity, nucleofuge, attract electron group the nunucleophilicity of nucleophilic reagent.
吸电子基团能增强该类配合物对皮秒激光的限幅效果，而重原子效应则起相反的作用。
Electron withdrawing groups can enhance the limiting effect for this kind of complexes, but the effect of heavy atom ACTS opposite role.
另外，还发现推电子基团取代的卟啉弛豫过程比吸电子基团取代的卟啉弛豫过程快7倍。
Moreover, We found that the relaxation time of H2TPP with donating electron group is about 7 times faster than that with withdrawing electron group.
本文合成了一系列7位拉电子基团取代的氧杂蒽-2-羧酸及氧杂蒽酮-2-羧酸化合物。
In the present paper, a series of xanthene-2-carboxylic acids and xanthone-2-carboxylic acids with electron withdrawing groups on the 7-position had been synthesized.
含有吸电子基团的二硝基苯类化合物反应活性明显高于含有供电子基的二硝基化合物的加氢反应；
The dinitrobenzene with electron-withdrawing group can be hydrogenated much easier than the dinitrobenzene with electron-donating group.
结果发现，引入推电子基团，如烷基，会使C60得电子能力降低，第一个还原电位有较大的负移；
It was found that introducing electron donating groups, such as alkyls, weaken the electron accepting ability of C60 and make its first reduction wave shifted to more negative position.
因此，深入研究含有供电子基团的共轭烯炔化合物各种性质，扩展其在各领域上的应用都是非常必要和有意义的。
So it is very necessary to study the characters and extend applications of this kind of conjugated enynes with electron-donating substitutes.
结果表明，偶氮苯衍生物分子具有很好的共轭性，在给吸电子基团作用下，电荷转移明显，展现示出较强的极性。
The results indicated that (1) azobenzene derivatives possess good conjugation. When linked with electron-donor and electron-acceptor, the charge transfer is obvious, thus shows strong polarity.
研究发现，无论对于吸电子取代基还是供电子的取代基对烯基亚砜的活性都没有任何影响，而邻甲基苯醌前体化合物中所带有的吸电子基团能增加其反应活性。
It was found that both the electro-withdraw and electro-donating substituents have no effect on reaction activity and the electro-withdraw substituents can increase the reaction activity.
并且对亲核试剂的体积效应、溶剂效应对亲核性影响，底物上吸电子基团的数目、吸电子能力对亲电性的影响，以及亲核取代反应的发生部位受哪些因素影响进行探讨。
At the same time, discuss about the impact factor to nucleophilicity such as the number of attract electron group, ability of attract electron and the nucleophilic substitution reaction part.
精确地说，因为有孤电子，所以分子中的基团与其他化学物质反应更加容易。
Literally, a radical is a molecule that reacts easily with other chemicals because of an unpaired electron.
二唑基团的引入，改善了PPV衍生物的电子传输特性。
The electron transport ability of OPPV was improved due to introducing oxadiazole groups.
红外光谱及X光电子能谱表明，臭氧氧化在碳黑表面引进了羧基基团。
Both infrared spectroscopy (IR) and X-ray photoelectron spectroscopy (XPS) show that carboxylic acid groups have been introduced onto the carbon black surface.
原子因，基团，至少有一个游离电子的原子或一组原子。
An atom or a group of atoms with at least one unpaired electron.
阐述了酞菁环的电子结构是其具有气敏性的基础，讨论了配合物中的中心原子和取代基团对配合物气敏性的影响。
The fundamental function of the electron structure of the ring skeleton and the influence of central atoms and substituents on gas-sensitivity is illustrated.
结果表明，通过电子束辐照可在HDPE分子链上引入含氧极性基团，使HDPE的表面自由能增大，极性增强，与水的接触角减小。
The experimental results show that polar groups (mainly carbonyl group) are introduced into the molecular chains of HDPE during electron beam irradiation, the polarity of HDPE is thus increased.
使用光强标定的发射光谱（AOES）测量了CHF3/C6H6混合气体的微波电子回旋共振（ECR）放电等离子体中基团的分布状态。
The distribution of radicals in CHF3/C6H6 electron cyclotron resonance (ECR) plasma was investigated by an actinometric optical emission spectroscopy (AOES).
评述了阳离子型聚合中电子重排、基团迁移异构化聚合反应和机理。
In this paper, the electron rearrangement, group transfer isomerization reactions and mechanism in carbocationic isomerization polymerizations are reviewed in detail.
测定了浮法玻璃上表面与下表面的吸附水量，借助电子能谱分析了浮法玻璃表面不饱和“基团”的分布。
Amount of the adsorbed water of upper and lower surfaces of float glass is measured, Distribution of the unsaturated group on both surfaces is analyzed by means of XPS.
射线光电子能谱(XPS)分析表明，这是由于涤纶表面被引入了大量含氧和含氮极性基团所致。
X-ray photoelectron spectroscopy (XPS) shows that the reason is the increase of oxygen and nitrogen polar functional groups on the surface.
同时，我们还研究了取代基团的电子效应和位阻效应对反应产率和区域选择性的影响。
At the same time, we have also investigated the influence of the electric effect and steric hindrance effect of the substituents to the yields and regioselectivity.
与氰基丙烯酸基相比，（联）绕丹宁乙酸基团作为电子受体更能降低染料的LUMO能级，从而使得激发态染料分子的电子注入驱动力变弱。
Compared to cyanoacrylic acid group, the(co) rhodanine acetic can also shift LUMO of dye positively and reduce the force of electron injection into conduction band of TiO2.
本文还用电子能谱揭示了表皮角蛋白与上述褪色剂之间的主要反应是胱氨酸的二硫键被氧化成磺酸基团。
The reactions between the decolorizing agents and keratin in epidermis have been revealed by X-ray photoelectron spectroscopy to be mainly oxidation of the disulfide linkage of cys...
本文还用电子能谱揭示了表皮角蛋白与上述褪色剂之间的主要反应是胱氨酸的二硫键被氧化成磺酸基团。
The reactions between the decolorizing agents and keratin in epidermis have been revealed by X-ray photoelectron spectroscopy to be mainly oxidation of the disulfide linkage of cys...
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