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).

Sources: Web Of Science, ORCID
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.

By: K. MacCulloch n, A. Browning n, P. TomHon n, S. Lehmkuhl n, E. Chekmenev* & T. Theis n

Contributors: K. MacCulloch n, A. Browning n, P. Tomhon n, S. Lehmkuhl 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
Sources: Web Of Science, ORCID
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).

By: A. Duchowny*, J. Denninger*, L. Lohmann*, T. Theis n, S. Lehmkuhl* & A. Adams*

Contributors: A. Duchowny*, J. Denninger*, L. Lohmann*, T. Theis n, S. Lehmkuhl* & A. Adams*

author keywords: high-pressure; benchtop NMR; SABRE; hyperpolarization; removable solvent
MeSH headings : Solvents / chemistry; Magnetic Resonance Spectroscopy / methods; Magnetic Resonance Imaging; Methanol
Sources: Web Of Science, ORCID
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*, S. Lehmkuhl n, T. Theis n

UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
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.

By: C. Nelson n, A. Schmidt*, I. Adelabu*, S. Nantogma*, V. Kiselev*, A. Abdurraheem*, H. Maissin*, S. Lehmkuhl* ...

Contributors: C. Nelson n, A. Schmidt*, I. Adelabu*, S. Nantogma*, V. Kiselev*, A. Abdurraheem*, H. Maissin*, S. Lehmkuhl* ...

author keywords: Carbon-13; Hyperpolarization; NMR Spectroscopy; Parahydrogen; RASER
MeSH headings : Hydrogen / chemistry; Protons; Magnetic Resonance Spectroscopy; Acetates / chemistry
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: December 20, 2022

2022 journal article

RASER MRI: Magnetic resonance images formed spontaneously exploiting cooperative nonlinear interaction

SCIENCE ADVANCES, 8(28).

Sources: Web Of Science, ORCID
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, S. Lehmkuhl 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)
Sources: Web Of Science, 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, S. Lehmkuhl 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
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: September 23, 2021

2021 journal article

Micron-Scale NV-NMR Spectroscopy with Signal Amplification by Reversible Exchange

PRX Quantum, 2(1), 010305.

By: N. Arunkumar*, D. Bucher*, M. Turner*, P. TomHon n, D. Glenn*, S. Lehmkuhl n, M. Lukin*, H. Park* ...

Contributors: N. Arunkumar*, D. Bucher*, M. Turner*, P. Tomhon n, D. Glenn*, S. Lehmkuhl n, M. Lukin*, H. Park* ...

Sources: Web Of Science, ORCID, Crossref
Added: January 13, 2021

2021 journal article

SABRE and PHIP pumped RASER and the route to chaos

Journal of Magnetic Resonance, 322, 106815.

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)
Sources: Web Of Science, ORCID, Crossref
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.

By: P. TomHon n, E. Akeroyd n, S. Lehmkuhl n, E. Chekmenev* & T. Theis n

Contributors: P. TomHon n, E. Akeroyd n, S. Lehmkuhl 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
Sources: Web Of Science, ORCID, 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.

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
Sources: Web Of Science, ORCID, Crossref
Added: June 1, 2020

2020 journal article

SABRE polarized low field rare-spin spectroscopy

The Journal of Chemical Physics, 152(18), 184202.

By: S. Lehmkuhl n, M. Suefke*, A. Kentner*, Y. Yen*, B. Blümich*, M. Rosen*, S. Appelt*, T. Theis n

Contributors: S. Lehmkuhl 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)
Sources: Web Of Science, ORCID, Crossref
Added: June 15, 2020

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