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Hyperpolarization via dissolution dynamic nuclear polarization: new technological and methodological advances.

Arthur C Pinon1, Andrea Capozzi1,2, Jan Henrik Ardenkjær-Larsen3

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Magma (New York, N.Y.)
|November 13, 2020
PubMed
Summary

Dissolution-dynamic nuclear polarization (DNP) significantly enhances Nuclear Magnetic Resonance (NMR) sensitivity. Recent advances focus on improving sample formulation and instrumentation for faster, higher polarization and extended signal use.

Keywords:
Bullet-DNPCross-polarizationCryogen-freeDynamic nuclear polarizationHyperpolarizationNon-persistent radicalsdDNP

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Area of Science:

  • Nuclear Magnetic Resonance (NMR) Spectroscopy
  • Hyperpolarization Techniques
  • Biophysics and Chemical Biology

Background:

  • Dissolution-dynamic nuclear polarization (DNP) is a powerful technique that dramatically increases liquid-state NMR sensitivity.
  • This method involves hyperpolarizing samples using solid-state dynamic nuclear polarization (DNP) at low temperatures and moderate magnetic fields.
  • The hyperpolarized sample is then rapidly melted and diluted for NMR analysis.

Purpose of the Study:

  • To review recent advancements in dissolution-DNP methods.
  • To address the limitations of the original dissolution-DNP technique, focusing on throughput, polarization speed, and signal longevity.
  • To explore new approaches in sample formulation and instrumentation for improved dissolution-DNP performance.

Main Methods:

  • Review of recent literature on dissolution-DNP techniques.
  • Analysis of novel sample formulations and their impact on hyperpolarization.
  • Examination of innovative instrumentation designs for dissolution-DNP.

Main Results:

  • Identification of new strategies for enhancing polarization efficiency and duration.
  • Exploration of diverse sample matrices and additives to optimize dissolution-DNP performance.
  • Overview of advancements in polarizer and dissolution hardware.

Conclusions:

  • Ongoing research is crucial for overcoming the inherent challenges of dissolution-DNP.
  • Innovations in sample formulation and instrumentation are key to unlocking the full potential of this technique.
  • Further development promises broader applications of NMR spectroscopy in various scientific fields.