関連する実験動画
Updated: Jul 9, 2026

09:36
Synthesis of Substrate-Bound Au Nanowires Via an Active Surface Growth Mechanism
Published on: July 18, 2018
Au上の単一のCH3SSCH3分子の表面調整解離におけるコンフォームの拡散 (111)
Peter Maksymovych1, John T Yates
1Surface Science Center, Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
Journal of the American Chemical Society
|August 17, 2006
まとめ
金の表面におけるジメチル二硫化物 (CH3SSCH3) の電子誘発解離により,分子構成が保たれています. 75%の症例で観察されたこの形状保持は,S-S結合破裂の際に表面の調整による可能性が高い.
科学分野:
- 表面科学とは,地表科学である.
- 化学物理 化学物理
- マテリアルサイエンス 材料科学
背景:
- ダイメチル二硫化物 (CH3SSCH3) の表面への吸収は,化学反応を理解する上で極めて重要です.
- 電子誘発解離は,表面化学変化の重要なプロセスである.
- Au(111) 表面は,分子相互作用を研究するためのモデル基板として機能します.
研究 の 目的:
- Au(111) 表面に吸収された単一のCH3SSCH3分子の形状を調査する.
- 電子誘発解離が分子構成に与える影響を測定する.
- S-S結合の割れ間における形状保存の背後にあるメカニズムを解明する.
主な方法:
- 単一のCH3SSCH3分子のアドソルプションをAu(111) に行います.
- 電子誘発解離実験 電子誘発解離実験
- 製品断片 (CH3S) の表面上の位置と向きの分析.
主要な成果:
- CH3SSCH3分子は,Au(111) 上のトランス変換で吸収されます.
- 電子誘発解離によりS-S結合が裂け,CH3Sの断片を形成する.
- 解離プロセスは75%の確率で親分子の形状を保持します.
- S-S結合破裂反応座標の表面の整列は,形状保持を誘導する可能性がある.
結論:
- 電子誘発によるCH3SSCH3の解離により,Au111) の分子構造が保たれる.
- 形状保持の高い確率は,表面媒介反応力学に起因する.
- この研究は,表面上の制御された分子変換に関する洞察を提供します.
関連する概念動画
Lewis Structures of Molecular Compounds and Polyatomic Ions
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
Hybridization of Atomic Orbitals I
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...
Hybridization of Atomic Orbitals II
sp3d and sp3d 2 Hybridization
Chirality at Nitrogen, Phosphorus, and Sulfur
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
SN1 Reaction: Mechanism
Kinetic studies of ionization of a tertiary halide in a protic solvent suggest that only the substrate participates in the rate-determining step (slow step). The nucleophile is involved only after the slowest step. The SN1 reaction takes place in a multiple-step mechanism.
Firstly, the haloalkane ionizes to generate a carbocation intermediate and a halide ion. This heterolytic cleavage is highly endothermic with large activation energy. The ionization of the substrate, facilitated by a polar...
Firstly, the haloalkane ionizes to generate a carbocation intermediate and a halide ion. This heterolytic cleavage is highly endothermic with large activation energy. The ionization of the substrate, facilitated by a polar...
Mass Spectrometry: Molecular Fragmentation Overview
The ionization of a molecule into a molecular ion inside the mass spectrometer causes instability in the molecule's structure due to the loss of an electron. This eventually leads to the fragmentation or breaking of some bonds in the molecule. The fragmentation occurs predominantly at specific bonds to yield relatively stable fragments.
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...

