查询词典 electron affinity

Koopmans theorem is an approximation in molecular orbital theory , such as density functional theory , or Hartree-Fock theory, in which the first ionization energy of a molecule is equal to the energy of the highest occupied molecular orbital, and the electron affinity is the negative of the energy of the lowest unoccupied, i.e.

如同密度泛函理论或者Hartree－Fock理论，分子轨道理论中常用到的Koopmans 定理也是一种近似。

In a period, most commonly the first ionization energy increases with increasing atomic mass, while the change in electron affinity does not show a clear trend.

P14 在一个周期内，通常第一电离能随原子量的增加而增加，而电子亲和能的变化却没有明显的规律。

The measurement results of the energy levels indicate that the electron affinity of the compound is higher than that of PBD which is the normal electron-transporting material.

测量结果表明，该化合物具有较高的电子亲和势，明显高于常用的电子传输材料2-（4-联苯基）－5-（对叔丁基苯基－1，3，4-恶二唑。

Electron emission characteristics have been investigated for amorphous diamond films with low or even negative electron affinity.

摘要利用阴极电弧法分别在矽基板及镀有一层钐金属的矽基板上沉积非晶钻石。

The carbon based materials have low electron affinity even negative electron affinity,and have the good ability of eradiating electrons in electric field.

其中非晶碳膜具有好的化学稳定性和热稳定性、高的熔点和热导率、小的介电常数、大的载流子迁移率和高的击穿电压，是一种很有前途的场发射冷阴极材料。

LPOXD contains azobenzene and long side chain of alkyl, and shows photo absorption property, good solubility and high electron affinity, which can be used in the filed of optics, and as electron-transport and electroluminescent material.

含有偶氮苯和长烷基侧链的LPOXD，具有光响应性能、优良的溶解性和高的电子亲和势，有望在光学领域、电子传输材料和电致发光材料中得到应用。

The electron structure and molecular conformation of phenothiazine derivatives will be significantly changed with the increase of the electron affinity of the N-10 substituent.

随着N10位取代基电负性的增加，吩噻嗪衍生物的电子结构和分子构型将发生明显的变化。

According to these computated results, the correct experiment values of electron affinity can be chosen from the values of electron affinity which are measured by various experimental methods.

通过计算说明了电子亲合力与诱导效应的定量相关比电负性与诱导效应的定量相关好得多；并应用其定量关系式预测尚未实测到的取代基的电子亲合力值；根据计算结果，可从不同实验方法测得的电子亲合力值中选择正确的实验值。

These materials have excellent chemical and thermal stability, high melting point, high thermal conductivity, high breakdown voltage and large carrier mobility rate especially the smaller electron affinity and potential or even a negative electron affinity, and the situation has greatly reduced the market launch of the threshold voltage, therefore, Field emission of such material will have a very vast potential for development and application prospects.

这些材料具有良好的化学与热稳定性、高熔点、高热导率、高击穿电压及大的载流子迁移率，特别是较小的电子亲和势甚至是负的电子亲和势，大大降低了场发射的阈值电压，因此，这类场发射材料将有着极为广阔的发展潜力及应用前景。

The usually used electron-transporting materials have disadvantages.They can be easily formed crystal,have lower electron affinity,a narrow gap and difficult to limit the complex exciton to the luminescence layer,all of these disadvantages limit,their application.

有机电致发光材料中常用的电子传输材料容易结晶和低的电子亲和性限制了它的应用；并且能隙较窄，难以将复合激子限制在发光层。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。