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Updated: Jun 20, 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

二重電子電子共振を用いたポルフィリンベースの分子ワイヤの柔軟性を探査する

Janet E Lovett1, Markus Hoffmann, Arjen Cnossen

  • 1Centre for Advanced Electron Spin Resonance, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, United Kingdom. janet.lovett@path.ox.ac.uk

Journal of the American Chemical Society
|September 10, 2009
PubMed
まとめ

亜鉛ポルフィリンオリゴマーは分子線として作用し,その形状を維持するが,多価リガンドによって変形させられる. この研究では,これらのナノ構造体内の距離を測定するために電子パラマグネティック共振 (EPR) を使用しました.

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Single-Molecule Förster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN111:27

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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.
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Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...
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¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

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¹H NMR of Conformationally Flexible Molecules: Temporal Resolution

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¹H NMR: Long-Range Coupling

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¹H NMR: Complex Splitting

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