探讨了不同取代基的毒性作用机制。
The toxicity mechanism of different substitutions was discussed.
从而以高收率得到带各种取代基的环丙烷。
一种含吲哚类取代基的苯并呋喃酮类化合物的制造方法。
The invention discloses a preparation method of a benzofuran ketones compound containing indoles substituent groups.
所研究化合物的生物降解性主要与取代基的电子效应有关。
It is also shown that the biodegradability of studied compounds is mainly related to the electronic effect of substitute groups.
取代基的影响较小，主链共轭结构对吸收光谱的影响明显。
In short, the influence of the substituents is insignificant. However, the remarkable effect was induced by the conjugated structure in the main chain.
作者认为影响聚合物等规度的因素主要是取代基的极性效应。
The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.
吡啶取代基的大小和空间位阻是影响相互作用方式的关键因素之一。
The size and steric hindrance of substituent of porphyrin is one of the crucial factors to affect the interaction between porphyrins and DNA.
然而，有关的PS和EVA取代基的空间位阻效应取消此催化行为。
However, the steric effects related to the substituents of PS and EVA cancels this catalytic behaviour.
发现了一种简便制备邻位含吸电子取代基的膦酰基杂环化合物的方法。
A simple method of preparation of phosphonic heterocyclic compounds has been found.
最大吸收、最大发射、及荧光寿命与取代基的哈密顿取代基常数呈折线关系。
The absorption, emission maximum and the fluorescence lifetime changed as the Hammett substituent constant in folding linear.
根据羰基配体取代基的不同，该类簇合物中小分子的移动种类及方式也有所不同。
These clusters show different fluxional behaviour and ligands according to various substituent around the metals of osmium.
该方法由于可以通过改变醇的种类，合成出含不同烷基取代基的百草枯衍生物。
The method can synthesize paraquat derivatives containing different alkyl substituents by changing the type of ethanol.
由此可以看出，取代基的主本阻碍反应，是反映在违背动力学因素而不是热力学因素。
It follow therefore that the steric blocking effects of substituents are reflected in adverse kinetic, rather than thermodynamic factors.
本发明的含有蒽苯甲酮取代基的氟单体及其制备方法和应用属于高分子材料的技术领域。
The invention relates to a fluorine monomer with anthracene benzene ketone substituting group, the preparation method and the application, belonging to the technical field of macromolecular material.
结果表明，苯环上取代基的种类及位置对化合物分子的共轭体系及共平面程度有较大影响。
The results indicate that the kind and position of the substituents in aniline ring greatly affected the conjugation system and coplanarity of the products.
综述了具有不同含氟取代基的氟硅单体合成方法，以及由这些单体制备氟硅油的研究成果。
This paper deal with the research and progress of the synthesis of some fluorosilicon monomer and the corresponding fluorosilicon oil.
第三种方法包括：1将含极性取代基的染料分子合成；2控制染料分子的聚合或结晶过程。
The third approach involves: 1 the synthesis of certain molecules containing readily polarised groups of substituents, and 2 the controlled polymerisation or crystallisation of these molecules.
本发明提供了一类具有式ii结构的1,4 -萘醌类化合物，其取代基的定义如明所述。
The invention provides 1, 4-naphthoquinone compounds with a formula II, and the definition of substituents of the naphthoquinone compounds are described as the specification.
本文报导几种具有不同取代基的芳基丁炔醇的合成和苯基丁炔醇在不同催化条件下的反应性能。
The synthesis of a few Aromatic butynols with different substituting groups and reaction of Phenyl butynols under the different catalysis is described in this paper.
在此基础上讨论了溶液中样品的结构、取代基对其结构、构象的影响和取代基的化学位移规律。
The structure of samples in solution, the influence of R-substitution on conformation, and the rule of R-substituted chemical shifts were discussed.
结果表明，此类磺酰脲类化合物的除草活性与苯环5位取代基的立体结构和电场性质密切相关。
The results show that herbicidal activity is closely related to the steric and electronic properties of the 5-position of the benzene ring.
生测结果表明在吡啶环的2位合适的取代基和丙烯酸酯的3位取代基的体积对除草活性至关重要。
These results indicated that a suitable substituent at the 2-position of pyridine ring and a well-fit group at the 3-position of acrylate were both essential for hi.
配体的中心骨架、功能末端基、取代基的位置及抗衡阴离子等因素对配合物的荧光强度均有较大影响；
The luminescent properties of the complexes are influenced by the skeleton structure, terminal groups, the different position of the substituents of the ligands and the counter anions.
设计合成了一类以蒽为电子给体，带不同吸电子取代基的苯为电子受体的新型短程有机电子给体受体体系。
A new series of short range donor acceptor systems consisting of anthracene and different substituted benzoic esters were synthesized.
研究结果表明，三芳胺化合物的结构类型、取代基的性质、个数和位置对其光电性能均有不同程度的影响。
The results indicated that the type of the triarylamine, the property, number and locality of the substitutes have influences on the transportation of the carriers.
在有机非线性材料、光电导器件、光动力治疗癌症等领域的研究中，带有多种取代基的酞菁配合物受到关注。
Interesting in phthalocyanines modified by different substituents is growing in many fields such as organic nonlinear optical material, photoconducting device, and photodynamic therapy.
结果表明，对邻苯二甲酸酯类化合物而言，取代基的空间结构参数是影响受试物好氧生物降解性能的重要因素。
The result showed that the steric factors of substituents were important parameters affecting the aerobic biodegradability of the tested compounds.
设计合成一系列具有不同取代基的苯甲酰萘（苯）胺衍生物，测定它们在非极性溶剂环己烷中的荧光发射光谱。
A series of prar-and meta-substituted benzanilides were synthesized and their fluorescence spectra in nonpolar solvent cyclohexane were investigated.
研究表明水杨醛亚胺镍配合物中苯环上取代基的电子效应和空间位阻对乙烯聚合活性和聚合物的分子量有所影响。
With increasing the electron withdrawing substituents in the phenoxy ring, the catalytic activity was increased, and the molecular weight of polyethylene decreased.
研究表明水杨醛亚胺镍配合物中苯环上取代基的电子效应和空间位阻对乙烯聚合活性和聚合物的分子量有所影响。
With increasing the electron withdrawing substituents in the phenoxy ring, the catalytic activity was increased, and the molecular weight of polyethylene decreased.
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