从平面建筑单元中制造的纳米级十二面体和富勒烯类型的有机氧和玻酸
Mario Sánchez1, Jonas Baltrusaitis2, María G Vasquez-Ríos3
1Centro de Investigación en Materiales Avanzados, S.C., Alianza Norte 202, Parque de Investigación en Innovación Tecnológica (PIIT), Carretera Monterrey-Aeropuerto Km 11, Apodaca 66628, Nuevo León, México.
Nano letters
|May 7, 2024
概括
碳富勒烯的类似物,氧和氧,表现出可调节的多孔性和电子特性. 这些新的基纳米结构为各种纳米科学应用提供了潜力.
科学领域:
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 碳烯 (C20,C60,C70) 是一种成熟的纳米材料,具有独特的结构和电子特性.
- 基于的子化合物为设计新型纳米材料提供了替代性支架.
- 了解这些子的结构属性关系对于它们的应用至关重要.
研究的目的:
- 通过计算来研究碳富勒烯的氧和氧类同类物.
- 为了比较它们与纳米级应用相关的结构性,应变性和物理性质.
- 探索它们在纳米科学中的应用潜力.
主要方法:
- 密度函数理论 (DFT) 的计算被用于模拟氧和氧子.
- 分析了结构参数,应变指标和电子特性 (HOMO-LUMO差距).
- 进行了分子静电潜力和希尔什菲尔德群体分析.
主要成果:
- 与C60和C70富勒烯相似的氧和氧子表现出比较小的子更低的应变.
- 子直径在2.4至4.9纳米之间,可调节的多孔性 (0.6-1.9纳米口径).
- 在子表面上确定了核友和电友的位点,HOMO-LUMO间隙为3.984.89 eV (博洛) 和5.105.18 eV (博拉).
结论:
- 素和素子代表了有前途的,可调节的多孔纳米材料.
- 它们的电子特性和表面特征表明,它们有可能用于各种纳米科学应用.
- 这些发现指导了基于的新型纳米结构的合理设计.
相关概念视频
VSEPR Theory and the Basic Shapes
68.2K
Overview of VSEPR Theory
68.2K
Valence Bond Theory
8.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.5K
Exceptions to the Octet Rule
28.2K
Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
28.2K
Crystal Field Theory - Tetrahedral and Square Planar Complexes
42.4K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
42.4K
Hybridization of Atomic Orbitals I
47.0K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
47.0K
Coordination Number and Geometry
15.7K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
15.7K


