Dynamic Nuclear Polarization of Metal-Organic Frameworks Using Photoexcited Triplet Electrons

Saiya Fujiwara, Masanori Hosoyamada, Kenichiro Tateishi, Tomohiro Uesaka, Keiko Ideta, Nobuo Kimizuka, Nobuhiro Yanai

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

While dynamic nuclear polarization based on photoexcited triplet electrons (triplet-DNP) has the potential to hyperpolarize nuclear spins of target substrates in the low magnetic field at room temperature, there has been no triplet-DNP system offering structural rigidity and substrate accessibility. Here, we report the first example of triplet-DNP of nanoporous metal-organic frameworks. Accommodation of a carboxylate-modified pentacene derivative in a partially deuterated ZIF-8 (D-ZIF-8) results in a clear 1H NMR signal enhancement over thermal equilibrium.

Original languageEnglish
Pages (from-to)15606-15610
Number of pages5
JournalJournal of the American Chemical Society
Volume140
Issue number46
DOIs
Publication statusPublished - Nov 21 2018

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Magnetic Fields
Hot Temperature
Metals
Electrons
Polarization
Temperature
Substrates
Rigidity
Nuclear magnetic resonance
Magnetic fields
Derivatives
pentacene
Proton Magnetic Resonance Spectroscopy

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Dynamic Nuclear Polarization of Metal-Organic Frameworks Using Photoexcited Triplet Electrons. / Fujiwara, Saiya; Hosoyamada, Masanori; Tateishi, Kenichiro; Uesaka, Tomohiro; Ideta, Keiko; Kimizuka, Nobuo; Yanai, Nobuhiro.

In: Journal of the American Chemical Society, Vol. 140, No. 46, 21.11.2018, p. 15606-15610.

Research output: Contribution to journalArticle

Fujiwara, Saiya ; Hosoyamada, Masanori ; Tateishi, Kenichiro ; Uesaka, Tomohiro ; Ideta, Keiko ; Kimizuka, Nobuo ; Yanai, Nobuhiro. / Dynamic Nuclear Polarization of Metal-Organic Frameworks Using Photoexcited Triplet Electrons. In: Journal of the American Chemical Society. 2018 ; Vol. 140, No. 46. pp. 15606-15610.
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