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関連する概念動画

π Molecular Orbitals of 1,3-Butadiene01:24

π Molecular Orbitals of 1,3-Butadiene

Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
π Molecular Orbitals of the Allyl Cation and Anion01:18

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 Orbital Theory II03:51

Molecular Orbital Theory II

Molecular Orbital Energy Diagrams
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0, resulting in...
Anchoring Junctions01:03

Anchoring Junctions

Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
VSEPR Theory and the Basic Shapes02:52

VSEPR Theory and the Basic Shapes

Overview of VSEPR Theory

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Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
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Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

分子エレクトロニクス用のフルレレンベースのアンカリンググループ

Christian A Martin1, Dapeng Ding, Jakob Kryger Sørensen

  • 1Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands. martin@physics.leidenuniv.nl

Journal of the American Chemical Society
|September 16, 2008
PubMed
まとめ
この要約は機械生成です。

私たちは,分子電子機器のための新しいフルレンのアンカリンググループを開発しました. このフルレン基の分子は,伝統的なアンカリンググループよりも低い伝導率の広がりを持つ安定した単一分子結合を示しています.

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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

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Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
09:35

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units

Published on: September 18, 2016

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Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
08:07

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

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Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
09:35

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units

Published on: September 18, 2016

科学分野:

  • マテリアルサイエンス 材料科学
  • ナノテクノロジー ナノテクノロジー
  • 物理化学 物理化学について

背景:

  • 分子電子は,単一の分子を電子部品として使用することを目的としています.
  • 安定したアンカリンググループを開発することは,信頼性の高い分子結合に不可欠です.
  • フラーレンの誘導体は,ユニークな電子的および構造的特性を有しています.

研究 の 目的:

  • 分子エレクトロニクスのための新しいフルレンベースのアンカリンググループを導入し,特徴づけること.
  • この新しい分子によって形成された単一分子結合の伝導性と安定性を評価する.
  • 1,4-ベンゼンデチオールや1,4-ベンゼンダイアミンなどの既定のアンカリンググループとの性能を比較するために.

主な方法:

  • 単一分子結合の製造は,真空中のリトグラフィックで機械的に制御可能な断裂結合を使用します.
  • 溶液から電極へのフルレンベースの分子の自己組み立て.
  • 低バイアスでのコンダクトンス測定.
  • 交差点断絶の統計分析とヒストグラム分析.

主要な成果:

  • フラーレンのアンカリングされた分子は,安定した単一分子結合に自己組み立てます.
  • 低バイアス伝導度3x10(-4) G0が測定されました.
  • 1,4-ベンゼンデチオールと比較して,伝導性が著しく低い.
  • 1,4-ベンゼンダイアミンよりもヒストグラムでより有意なシグネチャーで,より安定した吸収を示しています.

結論:

  • 新しいフルレンベースのアンカリンググループは,分子エレクトロニクスの安定的かつ効果的なモチーフを提供します.
  • 導電性の安定性と吸収の強さという点で,既存の分子に優れている.
  • この研究は,フルレンのアンカーを使用した高度な分子電子装置の道を開く.