Works (13)
Updated: September 8th, 2023 05:00
2023 journal article
Exploring synchrony and chaos of parahydrogen-pumped two-compartment radio-frequency amplification by stimulated emission of radiation
PHYSICAL REVIEW A, 108(2).
Contributors: L. Lohmann *, *, S. Fleischer *, M. Rosen *, E. Chekmenev *, T. Theis n , A. Adams *, S. Appelt *
link.aps.org (publisher PDF)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 16, 2023
2023 article
Parahydrogen in Reversible Exchange Induces Long-Lived 15N Hyperpolarization of Anticancer Drugs Anastrozole and Letrozole
MacCulloch, K., Browning, A., TomHon, P., Lehmkuhl, S., Chekmenev, E. Y., & Theis, T. (2023, May 10). ANALYTICAL CHEMISTRY, Vol. 5.
Contributors: K. MacCulloch n, A. Browning n, P. Tomhon n , n, E. Chekmenev * & T. Theis n
MeSH headings : Letrozole; Anastrozole; Magnetic Resonance Spectroscopy; Magnetic Resonance Imaging; Antineoplastic Agents / pharmacology
TL;DR:
The nitrile 15N sites enable long-lasting polarization storage with [15N]T1 over 9 min, enabling signal detection from a single hyperpolarization cycle for over 30 min, and this sensitivity gain enables polarization studies at naturally abundant 15N enrichment level (0.4%).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: May 11, 2023
2023 journal article
SABRE Hyperpolarization with up to 200 bar Parahydrogen in Standard and Quickly Removable Solvents
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, 24(3).
Contributors: A. Duchowny *, J. Denninger*, L. Lohmann *, T. Theis n , * & A. Adams *
author keywords: high-pressure; benchtop NMR; SABRE; hyperpolarization; removable solvent
MeSH headings : Solvents / chemistry; Magnetic Resonance Spectroscopy / methods; Magnetic Resonance Imaging; Methanol
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 31, 2023
2023 journal article
Spin dynamics of [1,2-C-13(2)]pyruvate hyperpolarization by parahydrogen in reversible exchange at micro Tesla fields
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 25(24), 16446–16458.
Contributors: A. Browning n, K. Macculloch n, P. TomHon n , I. Mandzhieva n, E. Chekmenev *, B. Goodson *, n, T. Theis n
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: June 13, 2023
2022 article
Parahydrogen-Induced Carbon-13 Radiofrequency Amplification by Stimulated Emission of Radiation
Nelson, C., Schmidt, A. B., Adelabu, I., Nantogma, S., Kiselev, V. G., Abdurraheem, A., … Chekmenev, E. Y. (2022, December 19). ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol. 12.
Contributors: C. Nelson n, A. Schmidt *, I. Adelabu *, S. Nantogma *, V. Kiselev *, A. Abdurraheem *, H. Maissin *, *
author keywords: Carbon-13; Hyperpolarization; NMR Spectroscopy; Parahydrogen; RASER
MeSH headings : Hydrogen / chemistry; Protons; Magnetic Resonance Spectroscopy; Acetates / chemistry
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: December 20, 2022
2022 journal article
RASER MRI: Magnetic resonance images formed spontaneously exploiting cooperative nonlinear interaction
SCIENCE ADVANCES, 8(28).
Contributors: n, S. Fleischer *, L. Lohmann *, M. Rosen *, E. Chekmenev *, A. Adams *, T. Theis n , S. Appelt *
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: July 14, 2022
2021 article
A Versatile Compact Parahydrogen Membrane Reactor
TomHon, P. M., Han, S., Lehmkuhl, S., Appelt, S., Chekmenev, E. Y., Abolhasani, M., & Theis, T. (2021, October 26). CHEMPHYSCHEM, Vol. 10.
Contributors: P. TomHon n , S. Han n, n, S. Appelt *, E. Chekmenev *, M. Abolhasani n , T. Theis n
author keywords: hyperpolarization; parahydrogen; NMR; fluidics; RASER
MeSH headings : Magnetic Resonance Imaging; Magnetic Resonance Spectroscopy
TL;DR:
A Spin Transfer Automated Reactor that produces continuous parahydrogen induced polarization (PHIP), which is stable for hours to days is introduced, and the PHIP variant called signal amplification by reversible exchange (SABRE) is used, which is particularly well suited to produce continuous hyperpolarization.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: November 8, 2021
2021 article
Density Functional Theory Study of Reaction Equilibria in Signal Amplification by Reversible Exchange
Lin, K., TomHon, P., Lehmkuhl, S., Laasner, R., Theis, T., & Blum, V. (2021, September 22). CHEMPHYSCHEM, Vol. 9.
Contributors: K. Lin *, P. TomHon n , n, R. Laasner *, T. Theis n & V. Blum *
author keywords: computational chemistry; density functional calculations; hyperpolarization; NMR spectroscopy; reaction mechanisms; parahydrogen
MeSH headings : Density Functional Theory; Hydrogen / chemistry; Methanol / chemistry; Pyridines / chemistry; Surface Properties
TL;DR:
An in-depth theoretical analysis of key chemical equilibria in Signal Amplification by Reversible Exchange (SABRE), employing density functional theory calculations to characterize the likely reaction network, shows that a methanol-containing intermediate is plausible as a transient species in the process.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: September 23, 2021
2021 journal article
Micron-Scale NV-NMR Spectroscopy with Signal Amplification by Reversible Exchange
PRX Quantum, 2(1), 010305.
Contributors: N. Arunkumar*, D. Bucher *, M. Turner *, P. Tomhon n , D. Glenn*, n, M. Lukin *, H. Park *
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, Crossref, NC State University Libraries
Added: January 13, 2021
2021 journal article
SABRE and PHIP pumped RASER and the route to chaos
Journal of Magnetic Resonance, 322, 106815.
Contributors: S. Appelt *, n, S. Fleischer *, B. Joalland *, N. Ariyasingha *, E. Chekmenev *, T. Theis n
author keywords: RASER; Hyperpolarization; NMR spectroscopy; MRI; Parahydrogen; PHIP; PASADENA; ALTADENA; SABRE; Synergetics; Slaving principle; Non-linear coupled oscillators; Mode collapse; Period doubling; Chaos; Intermittence
TL;DR:
Light is shed on the links between NMR spectroscopy, RASER physics, synergetics and chaos theory and several new applications are envisioned in the fields of quantum sensor technology, structure investigation or magnetic resonance imaging (MRI).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, Crossref, NC State University Libraries
Added: January 12, 2021
2020 journal article
Automated pneumatic shuttle for magnetic field cycling and parahydrogen hyperpolarized multidimensional NMR
Journal of Magnetic Resonance, 312, 106700.
Contributors: P. TomHon n , E. Akeroyd n, n, E. Chekmenev * & T. Theis n
author keywords: Parahydrogen; SABRE; Magnetic field cycling; Pneumatic shuttling; Singlet states; Hyperpolarization
MeSH headings : Catalysis; Equipment Design; Hydrogen / chemistry; Magnetic Fields; Magnetic Resonance Spectroscopy / instrumentation; Models, Molecular; Nitrogen Isotopes / chemistry; Protons
TL;DR:
A simple-to-implement pneumatic sample shuttle system that enables automated 2D hyperpolarized NMR, including the first inverse 15N/1H HSQC, and uncovers binding mechanisms of the catalytic species through cross peaks that are not accessible in standard one-dimensional hyperPolarized experiments.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: March 23, 2020
2020 journal article
Parahydrogen‐Induced Radio Amplification by Stimulated Emission of Radiation
Angewandte Chemie International Edition, 59(22), 8654–8660.
Contributors: B. Joalland *, N. Ariyasingha *, n, T. Theis n , S. Appelt * & E. Chekmenev *
author keywords: hyperpolarization; NMR spectroscopy; parahydrogen; PHIP; RASER
TL;DR:
This work uses a commercial bench-top NMR spectrometer in conjunction with pairwise parahydrogen addition producing proton-hyperpolarized molecules in the Earth's magnetic field or in a high magnetic field to induce RASER without any radio-frequency excitation pulses.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: June 1, 2020
2020 journal article
SABRE polarized low field rare-spin spectroscopy
The Journal of Chemical Physics, 152(18), 184202.
Contributors: n, M. Suefke *, A. Kentner*, Y. Yen *, B. Blümich*, M. Rosen *, S. Appelt *, T. Theis n
TL;DR:
The combination of low field NMR instruments with SABRE polarization results in sensitive measurements, even for rare spins with low gyromagnetic ratios at low magnetic fields.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries, Crossref
Added: June 15, 2020
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