Model – free approach to quadrupole spin relaxation in solid 209Bi-aryl compounds
Literature Information
Danuta Kruk, Christian Goesweiner, Elzbieta Masiewicz, Evrim Umut, Carina Sampl, Hermann Scharfetter
Nuclear Quadrupole Resonance (NQR) experiments were performed for deuterated and non-deuterated triphenylbismuth (BiPh3) to inquire into 209Bi relaxation mechanisms. The studies are motivated by the idea of exploiting Quadrupole Relaxation Enhancement (QRE) as a novel contrast mechanism for Magnetic Resonance Imaging. From this perspective relaxation features of nuclei possessing quadrupole moment (quadrupole nuclei) are of primary importance for the contrast effect. Spin–spin relaxation rates associated with the NQR lines were described in terms of the Redfield relaxation theory assuming that the relaxation is caused by fluctuations of the electric field gradient tensor at the position of the quadrupole nucleus that are described by an exponential correlation function. The description referred to as a model-free approach is an analogy of the description used for paramagnetic contrast agents. It was demonstrated that for the deuterated compound this approach captures the essential features of 209Bi relaxation, but it should not be applied for non-deuterated compounds as dipolar interactions between neighbouring protons and the quadrupole nucleus considerably contribute to the relaxation of the last one. Thus, the relaxation scenario for species containing quadrupole nuclei is fundamentally different than for paramagnetic contrast agents and this fact has to be taken into account when predicting contrast effects based on QRE.
Related Literature
Interactions of photosynthetic reaction center with 2,3-dimethoxy-5-methyl-1,4-benzoquinone in reverse micelles
Gerardo Palazzo, Antonia Mallardi, Mauro Giustini, Mario Della Monica, Giovanni Venturoli
DOI: 10.1039/B003905P
Ultrafast IR laser control of photodissociation: single- vs. multi-pulse schemes
DOI: 10.1039/A902136A
Stabilization of planar lipid membranes: A stratified layer approach
Wolfgang Meier, Alexandra Graff, Anke Diederich, Mathias Winterhalter
DOI: 10.1039/B004073H
Structures and phase transitions in aqueous dispersions of branched-chain glycerophosphoethanolamines
Frank Bringezu, Gert Rapp, Bodo Dobner, Peter Nuhn, Gerald Brezesinski
DOI: 10.1039/B003516P
Excess electrons in lithium–ethylamine solutions—density, electrical conductivity and EPR studies
DOI: 10.1039/A900683D
Density functional theory: X-ray reflectivity studies of pure fluid liquid/vapour interfaces
DOI: 10.1039/A902914A
Temperature-dependent phase behaviour of dihydroxy octadecanoic acid methyl esters: Influence of stereochemistry and position of the second polar moiety
Marina Fix, Manfred Sieber, Michael Overs, Hans J. Schäfer, Hans-Joachim Galla
DOI: 10.1039/B003996I
Ferritin adsorption to multicomponent monolayers: Influence of lipid charge density, miscibility and fluidity
David W. Britt, Dietmar Möbius, Vladimir Hlady
DOI: 10.1039/B003608K
You might also like
What precautions should be taken when handling 4-(2-Furylmethyl)thiomorpholine 1,1-dioxide (CAS: 79206-94-3)?
When handling 4-(2-Furylmethyl)thiomorpholine 1,1-dioxide (CAS: 79206-94-3), it ...
What precautions should be taken when handling 4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide (CAS: 71320-77-9)?
When handling 4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide (CAS: 71320-77-9), it...
How should waste containing 2-[2-(2-Methoxyethoxy)ethoxy]ethyl 4-methylbenzenesulfonate (CAS: 62921-74-8) be handled?
Waste containing this compound (CAS: 62921-74-8) should be handled according to ...
How should waste containing (S)-Methyl 2-amino-3-cyclohexylpropanoate be handled?
Waste containing (S)-Methyl 2-amino-3-cyclohexylpropanoate should be collected i...
How is 5-({4-[(2S,4R)-4-Hydroxy-2-methyltetrahydro-2H-pyran-4-yl]-2-thienyl}sulfanyl)-1-methyl-1,3-dihydro-2H-indol-2-one (CAS: 166882-70-8) typically synthesized?
This compound can be synthesized using a multi-step process involving the conjug...
Are there alternatives to (2E)-3-(3,4-Dichlorophenyl)acrylic acid (CAS: 7312-27-8) in synthesis?
There are several alternatives to (2E)-3-(3,4-Dichlorophenyl)acrylic acid in syn...
How should Ethyl 6-(2-nitrophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 925437-84-9) be stored?
Ethyl 6-(2-nitrophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 925437-84...
How should waste containing 2-(1,3-Thiazol-2-yl)ethanamine (CAS: 18453-07-1) be handled?
Waste containing 2-(1,3-Thiazol-2-yl)ethanamine (CAS: 18453-07-1) should be coll...
How is Methyl 5-iodo-2-methylbenzoate (CAS: 103440-54-6) typically synthesized?
Methyl 5-iodo-2-methylbenzoate can be synthesized through the iodination of meth...
How is 5-Chloro[1,2,4]triazolo[1,5-a]pyridine (CAS: 1427399-34-5) typically synthesized?
5-Chloro[1,2,4]triazolo[1,5-a]pyridine is commonly synthesized via the condensat...
Source Journal
Physical Chemistry Chemical Physics

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.










![[4-(Heptyloxy)phenyl]boronic acid structure [4-(Heptyloxy)phenyl]boronic acid structure](https://static.chemtradehub.com/structs/136/136370-19-9-ad33.webp)
![[4-Amino-2-(methylsulfanyl)-5-pyrimidinyl]methanol structure [4-Amino-2-(methylsulfanyl)-5-pyrimidinyl]methanol structure](https://static.chemtradehub.com/structs/588/588-36-3-fc73.webp)
![N-[(Benzyloxy)carbonyl]serine structure N-[(Benzyloxy)carbonyl]serine structure](https://static.chemtradehub.com/structs/276/2768-56-1-77f7.webp)
![1-Naphthalenesulfonic acid, 2-[(2-hydroxy-1-naphthalenyl)azo]-, bariumsalt (2:1) structure 1-Naphthalenesulfonic acid, 2-[(2-hydroxy-1-naphthalenyl)azo]-, bariumsalt (2:1) structure](https://static.chemtradehub.com/structs/110/1103-38-4-0b33.webp)
