由单位扰乱的分子导电量的轨道图
Yuta Tsuji1, Aleksandar Staykov, Kazunari Yoshizawa
1Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems, Kyushu University, Fukuoka 819-0395, Japan.
Journal of the American Chemical Society
|March 26, 2011
概括
这项研究使用分子轨道分析探索衍生物中的电子运输. 硫原子影响电子传输,这与分子电子设计的理论预测相一致.
科学领域:
- * * 分子电子学
- * * 量子化学 是一个量子化学.
背景情况:
- * 了解分子系统中的电子运输对于设计先进的电子设备至关重要.
- * 带有基原子的芳香碳化合物是分子连接的关键组成部分.
- * 之前的工作建立了电子运输轨道控制的概念.
研究的目的:
- * 为了研究硫原子对衍生物中的电子运输的影响.
- *分析二醇衍生物中的边界轨道的起源和行为.
- * 评估理论概念对带有固定单元的芳香碳化合物的适用性.
主要方法:
- * 定性Hückel分子轨道 (HMO) 分析.
- *使用扩展的赫克尔理论进行碎片分子轨道 (FMO) 分析.
- *使用密度函数理论 (DFT) 进行电子运输计算.
主要成果:
- * 硫原子显著影响边界轨道和电子运输特性.
- * 基于轨道视图的理论预测适用于具有固单元的分子.
- *和基乙醇衍生物中的电子运输显示出一致的位点依赖性.
- * 计算结果与轨道相互作用分析一致.
结论:
- *边界轨道的相位,振幅和空间分布对于设计电子传输特性至关重要.
- *赫克尔分子轨道分析提供了对电子运输现象的有价值的定性理解.
- * 这项研究有助于分子电子元件的合理设计.
相关概念视频
Molecular Orbital Theory I
Overview of Molecular Orbital Theory
MO Theory and Covalent Bonding
The molecular orbital theory describes the distribution of electrons in molecules in a manner similar to the distribution of electrons in atomic orbitals. The region of space in which a valence electron in a molecule is likely to be found is called a molecular orbital. Mathematically, the linear combination of atomic orbitals (LCAO) generates molecular orbitals. Combinations of in-phase atomic orbital wave functions result in regions with a high probability of electron density, while...
Molecular Orbital Theory II
Molecular Orbital Energy Diagrams
π Molecular Orbitals of the Allyl Cation and Anion
An allyl group is a three-carbon conjugated system where the sp³-hybridized allylic carbon is bonded to a CH=CH2 group via a single bond. Allyl anions can be obtained by treating propene with a strong base that can deprotonate methyl groups. Allyl cations are formed as intermediates during substitution reactions involving allylic halides. In both cases, the hybridization of the allylic carbon changes from sp3 to sp2, giving rise to a carbon chain with three sp2-hybridized carbons, each with an...
Molecular Geometry and Dipole Moments
The VSEPR theory can be used to determine the electron pair geometries and molecular structures as follows:
Molecular Models
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.


