関連する実験動画
Updated: May 10, 2026

16:24
Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
結合ポリマーと小分子の構成を制御する:非結合相互作用の役割
Nicholas E Jackson1, Brett M Savoie, Kevin L Kohlstedt
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States. nicholasjackson2016@u.northwestern.edu
Journal of the American Chemical Society
|June 27, 2013
まとめ
オーガニック・エレクトロニクスにおける非結合相互作用が研究されました. 特殊な水素結合 (CH··OとCH··N) は,室温でポリマーと小分子構造と平面性を独自に制御する.
科学分野:
- マテリアルサイエンス 材料科学
- 有機化学 オーガニック・ケミストリー
- コンピューティング・ケミストリー
背景:
- オーガニック・エレクトロニクスは,多様な化学構造を用いる.
- 適合性"ロック"スキームは,材料の性能にとって極めて重要です.
- 非結合相互作用は,構造的制御のためにしばしば探求されます.
研究 の 目的:
- オーガニック・エレクトロニクスにおける非結合相互作用を調査する.
- 酸素-硫黄,窒素-硫黄,フッ素-硫黄などの相互作用を評価する.
- 構成制御と平面性を誘発する相互作用を特定する.
主な方法:
- 精密な量子化学波動関数法.
- 非共振相互作用 (NCI) 分析. 非共振相互作用 (NCI) 分析. 非共振相互作用 (NCI) 分析. 非共振相互作用 (NCI) 分析. 非共振相互作用 (NCI) 分析.
- 結合ポリマーと小分子の研究.
主要な成果:
- 多くの非結合相互作用は弱い結合を示す.
- 非伝統的な水素結合 (CH··OとCH··N) が特定されました.
- これらの特殊な水素結合は,形状制御と強化された平面性を誘導する.
結論:
- CH··OとCH··Nの相互作用は,有機物質の形状制御の鍵である.
- これらの相互作用は,室温で脊椎の平面性を高めます.
- これらの非結合相互作用を理解することは,高性能な有機電子材料の設計に不可欠です.
関連する概念動画
Noncovalent Attractions in Biomolecules
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Noncovalent Attractions in Biomolecules
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Conformations of Cyclohexane
Cyclohexane does not exist in a planar form due to the high angle and torsional strain it would experience in the planar structure. Instead, it adopts non-planar chair and boat conformations.
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal tetrahedral value,...
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal tetrahedral value,...
Conformations of Ethane and Propane
In an organic molecule, free rotation about the carbon-carbon single bond results in energetically different conformers of the molecule. Due to this rotation, called the internal rotation, ethane has two major conformations — staggered and eclipsed.
Staggered conformation is a low energy and more stable conformation with the C-H bonds on the front carbon placed at 60°dihedral angles relative to the C-H bonds on the back carbon, leading to a reduced torsional strain. In staggered ethane, the...
Staggered conformation is a low energy and more stable conformation with the C-H bonds on the front carbon placed at 60°dihedral angles relative to the C-H bonds on the back carbon, leading to a reduced torsional strain. In staggered ethane, the...
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
At room temperature, the chair conformer of cyclohexane undergoes rapid ring flipping between two equivalent chair conformers at a rate of approximately 105 times per second. These two chair conformers are in equilibrium. The rapid ring flipping results in the interconversion of the axial proton to an equatorial proton and an equatorial to the axial proton. Such interconversions are too rapid and cannot be detected on the NMR timescale. Hence, the NMR spectrometer cannot distinguish between the...
Newman Projections
Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used representations is the dash-wedge formula. The dashed wedges, solid wedges, and the plane lines indicate the groups situated behind the plane, coming out of the plane, and in the plane, respectively.
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.

