Overhauser DNP with 15N labelled Frémy's salt at 0.35 Tesla

Literature Information

Publication Date 2011-11-09
DOI 10.1039/C1CP22332A
Impact Factor 3.676
Authors

Maria-Teresa Türke, Giacomo Parigi, Claudio Luchinat, Marina Bennati


View Original

Abstract

The effectiveness of dynamic nuclear polarization (DNP) as a tool to enhance the sensitivity of liquid state NMR critically depends on the choice of the optimal polarizer molecule. In this study the performance of 15N labelled Frémy's salt as a polarizing agent in Overhauser DNP is investigated in detail at X-band (0.35 T, 9.7 GHz EPR, 15 MHz 1H NMR) and compared to that of TEMPONE-D,15N employed in previous studies. Both radicals provide similar maximum enhancements of the solventwater protons under similar conditions but a different saturation behaviour. The factors determining the enhancement and effective saturation were measured independently by EPR, ELDOR and NMRD and are shown to fulfil the Overhauser equation. In particular, following the theory of EPR saturation we provide analytical solutions for the dependence of the enhancement on the microwave field strength in terms of saturation transfer between two coupled hyperfine lines undergoing spin exchange. The negative charge of the radical in Frémy's salt solutions can explain the peculiar properties of this polarizing agent and indicates different suitable application areas for the two types of nitroxide radicals.

Related Literature

New particle formation and growth from methanesulfonic acid, trimethylamine and water

Haihan Chen, Michael J. Ezell, Kristine D. Arquero, Mychel E. Varner, Matthew L. Dawson, R. Benny Gerber, Barbara J. Finlayson-Pitts

2015-04-27 Paper

DOI: 10.1039/C5CP00838G

Infrared spectra of small anionic water clusters from density functional theory and wavefunction theory calculations

Sai Duan, Guangjun Tian, Jun Jiang, Xin Xu

2015-04-13 Paper

DOI: 10.1039/C5CP01378J

Towards multielectron photocatalysis: a porphyrin array for lateral hole transfer and capture on a metal oxide surface

Bradley J. Brennan, Alec C. Durrell, Matthieu Koepf, Robert H. Crabtree, Gary W. Brudvig

2015-04-16 Paper

DOI: 10.1039/C5CP01683E

Investigation of thermal evolution of copper nanoclusters encapsulated in carbon nanotubes: a molecular dynamics study

Hamed Akbarzadeh, Mohsen Abbaspour, Sirous Salemi, Mousareza Abroodi

2015-04-16 Paper

DOI: 10.1039/C5CP01294E

Realization of a p–n junction in a single layer boron-phosphide

Deniz Çakır, Deniz Kecik, Hasan Sahin, Engin Durgun, Francois M. Peeters

2015-04-16 Paper

DOI: 10.1039/C5CP00414D

To π or not to π – how does methanol dock onto anisole?

Matthias Heger, Jonas Altnöder, Anja Poblotzki, Martin A. Suhm

2015-04-27 Paper

DOI: 10.1039/C5CP01545F

Pt-functionalized Fe2O3 photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state

M. E. A. Warwick, D. Barreca, E. Bontempi, G. Carraro, A. Gasparotto, C. Maccato, T.-P. Ruoko, H. Lemmetyinen, C. Sada, Y. Gönüllü, S. Mathur

2015-04-15 Paper

DOI: 10.1039/C5CP01636C

A class of rare antiferromagnetic metallic oxides: double perovskite AMn3V4O12 (A = Na+, Ca2+, and La3+) and the site-selective doping effect

Guangbiao Zhang, Yuanxu Wang, Yuli Yan, Chengxiao Peng, Chao Wang, Shuai Dong

2015-04-15 Paper

DOI: 10.1039/C5CP00186B

Spectral dependence of nonlinear optical properties of symmetrical octatetraynes with p-substituted phenyl end-groups

Agata Arendt, Marek Samoc, Sławomir Szafert

2015-04-20 Paper

DOI: 10.1039/C5CP01661D

You might also like

Compound Q&A

How should waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3) be handled?

Waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3...

898825-89-3N-Methoxy-N-methyl-1...
Compound Q&A

How should N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine (CAS: 1318338-47-4) be stored?

N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine should be stored in a tightly sealed c...

1318338-47-4N-(4-Biphenylyl)dibe...
Compound Q&A

What is the market or research trend for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1)?

The market for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1) is...

1713-07-13-Acetamido-5-amino-...
Compound Q&A

How should Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) be stored?

Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) ...

61820-03-9Benzyl 2-O-acetyl-3,...
Compound Q&A

What regulatory guidelines apply to 2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3)?

2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3) is regulated under the Glob...

438050-52-32-Ethylpiperazine di...
Compound Q&A

What regulatory guidelines apply to 1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 119462-56-5)?

1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 11946...

119462-56-51,1'-[1,3-Phenyleneb...
Compound Q&A

Are there alternatives to 5-Fluoro-2-(1-pyrrolidinyl)pyridine (CAS: 1287217-79-1) in synthesis?

Several alternatives can be used in the synthesis of 5-Fluoro-2-(1-pyrrolidinyl)...

1287217-79-15-Fluoro-2-(1-pyrrol...
Compound Q&A

What precautions should be taken when handling 6-Bromoimidazo[1,2-a]pyridin-8-amine (CAS: 676371-00-9)?

When handling 6-Bromoimidazo[1,2-a]pyridin-8-amine, it is important to wear appr...

676371-00-96-Bromoimidazo[1,2-a...
Compound Q&A

Are there alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochloride (CAS: 1049740-22-8) in synthesis?

Alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochlo...

1049740-22-8(2S,4R)-4-(4-Nitrobe...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.