Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved in...
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must have a...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Crystal structure of <i>catena</i>-poly[2-bromo-ethyl-ammonium [tin(II)-tri-μ-bromido]].

Acta crystallographica. Section E, Crystallographic communications·2026
Same author

Stepwise C-H bond activations and assembly of binuclear Ln<sup>3+</sup> species coordinated by a hexaanionic <i>anti</i>-η<sup>5</sup>:η<sup>5</sup>-dibenzopentalene-bridged bis(carbazolyl) framework.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Tuning single-molecule magnetism in Dy<sup>3+</sup> complexes <i>via</i> a tris(aryl)alkoxide ligand.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Fe(0)-catalyzed alkyne carboxylation with CO<sub>2</sub> involving spin crossover.

Chemical communications (Cambridge, England)·2026
Same author

4D-Printed Spin Crossover Metamaterials with Giant Programmable Positive or Negative Thermal Expansion.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Conserved Kir channel mechanisms governing intrinsic excitability in human and rodent parvalbumin neurons.

Communications biology·2026

関連する実験動画

Updated: May 29, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
09:00

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

表面プラズモンは,ナノメートルの層のスピンクロスオーバーを明らかにします.

Gautier Félix1, Khaldoun Abdul-Kader, Tarik Mahfoud

  • 1LCC, CNRS, and Université de Toulouse (UPS, INP), 205 route de Narbonne, F-31077 Toulouse, France.

Journal of the American Chemical Society
|September 10, 2011
PubMed
まとめ

ナノスケールでの分子スピンクロスオーバーの調査は難しい. この研究は,表面プラズモンのポラリトンが,ナノメートルスケールでも高い感度で薄膜のスピン状態の変化を検出できることを示しています.

さらに関連する動画

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
08:21

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography

Published on: September 2, 2017

関連する実験動画

Last Updated: May 29, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
09:00

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
08:21

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography

Published on: September 2, 2017

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
  • 凝縮物質物理学 凝縮物質物理学

背景:

  • 分子スピンクロスオーバー (SCO) 材料は,高度なアプリケーションに非常に興味があります.
  • 縮小された次元 (ナノスケール) でSCO現象を調査することは,重要な課題を提示します.
  • 既存の方法は,SCO検出のナノメートルスケールでの感度と解像度で苦労しています.

研究 の 目的:

  • ナノスケールでの分子スピン状態の変化を検出するための新しい方法を実証する.
  • 高感度SCO検出のための表面プラズモンのポラリトン波を活用する.
  • ナノオブジェクトと薄膜におけるスピンクロスオーバーの研究の限界を克服するために.

主な方法:

  • 表面プラズモンのポラリトン (SPP) 波を用いて,金属対流電界面で伝播する.
  • SPPとSCOの材料の相互作用に基づく検出スキームの開発.
  • ナノメートルのスケールで薄膜とナノオブジェクトでSCO現象を調査する.

主要な成果:

  • SPP波は,介電層のスピン状態の移行を非常に敏感に検出することを可能にします.
  • 提案された方法は,ナノメートルのスケールでのSCO現象でも有効です.
  • ナノスケールのSCO特徴化のためにプラズモニクスを使用する実現可能性が実証されました.

結論:

  • 表面プラズモンのポラリトンは,ナノスケールのスピンクロスオーバー検出のための有望な経路を提供します.
  • このテクニックは,縮小された次元でのスピンクロスオーバーの研究を強化します.
  • ナノスケールSCOベースのデバイスとセンサーを開発するための新しい道を開きます.