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 journalArticlepeer-review

    13 Citations (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

    All Science Journal Classification (ASJC) codes

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

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