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

Chemical Ionization (CI) Mass Spectrometry01:21

Chemical Ionization (CI) Mass Spectrometry

The molecular ion peak of a molecule in the mass spectrum provides vital information for molecular identification. However, conventional electron impact ionization can lead to the rapid dissociation of some molecular ions before they reach the detector. A milder ionization method is required to increase the lifetime of such ionized analyte molecules. Chemical ionization (CI) is a gas-phase protonation reaction useful for mass-analyzing analyte molecules that are easily protonated to yield the...
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
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...
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...

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

Unraveling the Electrochemical Mechanism of Cobalt Phthalocyanine for CO<sub>2</sub> and CO Reduction under Heterogenized Conditions.

Journal of the American Chemical Society·2026
Same author

An Unprecedented Square Planar Fe(III) Complex Exhibiting Spin Crossover Between the Spin-Admixed States.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

Electrochemically mediated disproportionation for selective formaldehyde upcycling in acid.

Nature communications·2026
Same author

Selective CO<sub>2</sub> Electroreduction to CO by an Organometallic Nickel Catalyst Featuring a C<sub>3</sub>-Symmetric Tris(Phosphino)Alkyl Ligand.

ACS catalysis·2026
Same author

Disentangling First and Second Sphere Effects in Iron-Sulfur Cubanes.

JACS Au·2026
Same author

A Self-Moderation Mechanism in CO<sub>2</sub> Electroreduction Catalyzed by a Cobalt Macrocyclic Complex.

Journal of the American Chemical Society·2026

関連する実験動画

Updated: May 25, 2026

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
05:51

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method

Published on: July 19, 2019

プロトン結合の間隔電荷伝送:協調したプロセス.

Ramachandran Balasubramanian1, Geneviève Blondin, Juan Carlos Canales

  • 1Université Paris Diderot , Sorbonne Paris Cité, Laboratoire d'Electrochimie Moléculaire, Unité Mixte de Recherche Université - CNRS 7591, Bâtiment Lavoisier, 15 rue Jean de Baïf, 75205 Paris Cedex 13, France.

Journal of the American Chemical Society
|January 21, 2012
PubMed
まとめ

電気化学的方法により,陽子誘発の間隔電荷伝送 (IVCT) の動力学が明らかになる. 二酸化鉄複合体の分析により,段階的な経路よりも協調された経路が好ましいことが示され,反応性研究への道が開けています.

さらに関連する動画

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
10:03

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy

Published on: June 27, 2014

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

関連する実験動画

Last Updated: May 25, 2026

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
05:51

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method

Published on: July 19, 2019

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
10:03

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy

Published on: June 27, 2014

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

科学分野:

  • 電気化学 電気化学について
  • 化学動力学 化学動力学
  • 無機化学 無機化学とは

背景:

  • 陽子誘導間隔電荷伝送 (IVCT) は,様々な化学的および生物学的システムにおいて極めて重要です.
  • IVCTの運動学とメカニズムの理解は,反応性を制御するために不可欠です.
  • 電気化学技術は,高速な電子伝送プロセスを探査するための強力なツールを提供します.

研究 の 目的:

  • プロトン誘導IVCT運動を研究するための電気化学的方法を開発し,適用する.
  • 陽子誘導IVCTにおける支配的な反応経路 (協調型対段階的) を明らかにする.
  • IVCT反応のシステマティックな運動学的調査のための基礎を確立する.

主な方法:

  • 1つのIVCTカップルメンバーのインシット電気化学生成.
  • 他のカップルメンバーの電気化学的サインを通して変換を監視します.
  • H/Dイソトープ効果を組み込んだ運動分析.

主要な成果:

  • 陽子誘発のIVCT運動を測定するために,新しい電気化学的アプローチが成功裏に採用されました.
  • H/D同位体効果を含む運動分析は,協調された陽子-IVCT経路を強く支持しています.
  • 段階的な経路は,研究された条件下ではあまり普及していないことが判明しました.

結論:

  • この研究は,陽子誘発のIVCT運動を調査するための実行可能な電気化学的戦略を示しています.
  • 協調した陽子伝送と区間電荷伝送が,重要なメカニズムとして特定されています.
  • この研究は,IVCT経路の選択性を支配する要因に関する詳細な研究への道を開く.