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Creators/Authors contains: "Abdurraheem, Abubakar"

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Analytical Chemistry)
    Free, publicly-accessible full text available April 29, 2026
  2. ; ; ; ; ; ; ; ; ; ; et al (, Analytical Chemistry)
    Free, publicly-accessible full text available February 18, 2026
  3. ; ; ; ; ; ; ; ; ; ; et al (, Analytical Chemistry)
    Full Text Available 
  4. ; ; ; ; ; ; ; ; ; ; et al (, ACS Sensors)
    Full Text Available 
  5. ; ; ; ; ; ; ; ; ; ; et al (, Journal of the American Chemical Society)
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  6. ; ; ; ; ; ; ; ; ; ; et al (, Angewandte Chemie International Edition)
    Abstract The feasibility of Carbon‐13 Radiofrequency (RF) Amplification by Stimulated Emission of Radiation (C‐13 RASER) is demonstrated on a bolus of liquid hyperpolarized ethyl [1‐13C]acetate. Hyperpolarized ethyl [1‐13C]acetate was prepared via pairwise addition of parahydrogen to vinyl [1‐13C]acetate and polarization transfer from nascent parahydrogen‐derived protons to the carbon‐13 nucleus via magnetic field cycling yielding C‐13 nuclear spin polarization of approximately 6 %. RASER signals were detected from samples with concentration ranging from 0.12 to 1 M concentration using a non‐cryogenic 1.4T NMR spectrometer equipped with a radio‐frequency detection coil with a quality factor (Q) of 32 without any modifications. C‐13 RASER signals were observed for several minutes on a single bolus of hyperpolarized substrate to achieve 21 mHz NMR linewidths. The feasibility of creating long‐lasting C‐13 RASER on biomolecular carriers opens a wide range of new opportunities for the rapidly expanding field of C‐13 magnetic resonance hyperpolarization. 
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