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pro vyhledávání: '"Edward P. Saliba"'
Autor:
Nicholas Alaniva, Edward P. Saliba, Patrick T. Judge, Erika L. Sesti, Wolfgang Harneit, Björn Corzilius, Alexander B. Barnes
Publikováno v:
Physical Chemistry Chemical Physics, 25 (7)
Frequency-chirped microwaves decouple electron- and 13C-spins in magic-angle spinning N@C60:C60 powder, improving DNP-enhanced 13C NMR signal intensity by 12% for 7 s polarization, and 5% for 30 s polarization. This electron decoupling demonstration
Autor:
Edward P. Saliba, Alexander B. Barnes
Publikováno v:
Concepts in Magnetic Resonance Part A. 2022:1-18
The Clebsch–Gordan coefficients are extremely useful in magnetic resonance theory, yet have an infamous perceived level of complexity by many students. The Clebsch–Gordan coefficients are used to determine both the matrix elements of the spherica
Autor:
Edward P. Saliba, Snorri Th. Sigurdsson, Erika L. Sesti, Brice J. Albert, Nicholas Alaniva, Lauren E. Price, Thomas Halbritter, George B. Kyei, Alexander B. Barnes, Patrick T. Judge
Publikováno v:
The Journal of Physical Chemistry B. 124:2323-2330
Dynamic nuclear polarization (DNP) is used to improve the inherently poor sensitivity of nuclear magnetic resonance (NMR) spectroscopy by transferring spin polarization from electrons to nuclei. However, DNP radicals within the sample can have detrim
Autor:
Erika L. Sesti, Edward P. Saliba, Nicholas Alaniva, Snorri Th. Sigurdsson, Thomas Halbritter, Alexander B. Barnes, Patrick T. Judge
Publikováno v:
Journal of Magnetic Resonance. 305:51-57
Dynamic nuclear polarization (DNP) improves signal-to-noise in nuclear magnetic resonance (NMR) spectroscopy. Signal-to-noise in NMR can be further improved with cryogenic sample cooling. Whereas MAS DNP is commonly performed between 25 and 110 K, sa
Autor:
Patrick Judge, Erika L. Sesti, Nicholas Alaniva, Edward P. Saliba, Lauren Price, Chukun Gao, Thomas Halbritter, Snorri Th. Sigurdsson, George B. Kyei, Alexander B. Barnes
Continuous wave (CW) dynamic nuclear polarization (DNP) is used with magic angle spinning (MAS) to enhance the typically poor sensitivity of nuclear magnetic resonance (NMR) by orders of magnitude. In a recent publication we show that further enhance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e026a72058a3cd78c436574d4f6ae8a
https://doi.org/10.26434/chemrxiv.11663790
https://doi.org/10.26434/chemrxiv.11663790
Publikováno v:
Journal of Magnetic Resonance. 295:1-5
Dynamic nuclear polarization (DNP) can improve nuclear magnetic resonance (NMR) sensitivity by orders of magnitude. Polarizing agents containing unpaired electrons required for DNP can broaden nuclear resonances in the presence of appreciable hyperfi
Autor:
Eric J. Choi, Faith J. Scott, Alexander B. Barnes, Nicholas Alaniva, Edward P. Saliba, Erika L. Sesti, Peter W. Rand, Brice J. Albert
Publikováno v:
Journal of Magnetic Resonance. 286:1-9
We report magic angle spinning (MAS) up to 8.5 kHz with a sample temperature below 6 K using liquid helium as a variable temperature fluid. Cross polarization 13C NMR spectra exhibit exquisite sensitivity with a single transient. Remarkably, 1H satur
Autor:
Erika L. Sesti, Faith J. Scott, Alexander B. Barnes, Chukun Gao, Brice J. Albert, Eric J. Choi, Edward P. Saliba, Nicholas Alaniva
Publikováno v:
Journal of the American Chemical Society. 139:6310-6313
Dynamic nuclear polarization (DNP) can enhance NMR sensitivity by orders of magnitude by transferring spin polarization from electron paramagnetic resonance (EPR) to NMR. However, paramagnetic DNP polarizing agents can have deleterious effects on NMR
Autor:
Edward P. Saliba, Alexander B. Barnes
Publikováno v:
J Chem Phys
Simulations describing the spin physics underpinning nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) spectroscopy play an important role in the design of new experiments. When experiments are performed in the solid state, s
Autor:
Chukun Gao, Erika L. Sesti, Edward P. Saliba, Nicholas Alaniva, Faith J. Scott, Alexander B. Barnes, Thomas Halbritter, Snorri Th. Sigurdsson, Patrick T. Judge
Publikováno v:
Journal of magnetic resonance (San Diego, Calif. : 1997). 308
We demonstrate that frequency-chirped dynamic nuclear polarization (DNP) with magic angle spinning (MAS) improves the enhancement of nuclear magnetic resonance (NMR) signal beyond that of continuous-wave (CW) DNP. Using a custom, frequency-agile gyro