ArticleJournal of the American Chemical Society2018
Exploring Applications of Covalent Organic Frameworks: Homogeneous Reticulation of Radicals for Dynamic Nuclear Polarization.
Article in Journal of the American Chemical Society, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 82 citations in OpenAlex.
- Direct Construction of Magnetic and Electrical Two-Dimensional Radical Covalent Organic Frameworks.Nature communications · 2026Article
- Through-Space Stabilization of Carbon-Centered Aryl Dicyanomethyl Radicals.Journal of the American Chemical Society · 2026Article
- In-situ formatting benzisoxazole-linked covalent organic framework for enhanced photocatalytic hydrogen peroxide generation.Nature communications · 2026Article
- A Radical-Cationic Covalent Organic Framework to Accelerate Polysulfide Conversion for Long-Durable Lithium-Sulfur Batteries.Journal of the American Chemical Society · 2025Article
- Anthraquinone-based covalent organic framework as a recyclable direct hydrogen atom transfer photocatalyst for C-H functionalization.Chemical science · 2024Article
- Polarizing agents for efficient high field DNP solid-state NMR spectroscopy under magic-angle spinning: from design principles to formulation strategies.Chemical science · 2023Review
- Radical Covalent Organic Frameworks Associated with Liquid Na-K toward Dendrite-Free Alkali Metal Anodes.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022Article
- Polyarylether-Based 2D Covalent-Organic Frameworks with In-Plane D-A Structures and Tunable Energy Levels for Energy Storage.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022Article
- Porous functionalized polymers enable generating and transporting hyperpolarized mixtures of metabolites.Nature communications · 2021Article
- Monitoring Crystallization Processes in Confined Porous Materials by Dynamic Nuclear Polarization Solid-State Nuclear Magnetic Resonance.Journal of the American Chemical Society · 2021Article
- Nanoscale covalent organic frameworks as theranostic platforms for oncotherapy: synthesis, functionalization, and applications.Nanoscale advances · 2020Review
- Designed synthesis of stable light-emitting two-dimensional spNature communications · 2018Article
Corrections and comments
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Authors and funding
14 authors at 4 institutions in 2 countries.
Funding
Abstract
Rapid progress has been witnessed in the past decade in the fields of covalent organic frameworks (COFs) and dynamic nuclear polarization (DNP). In this contribution, we bridge these two fields by constructing radical-embedded COFs as promising DNP agents. Via polarization transfer from unpaired electrons to nuclei, DNP realizes significant enhancement of NMR signal intensities. One of the crucial issues in DNP is to screen for suitable radicals to act as efficient polarizing agents, the basic criteria for which are homogeneous distribution and fixed orientation of unpaired electrons. We therefore envisioned that the crystalline and porous structures of COFs, if evenly embedded with radicals, may work as a new "crystalline sponge" for DNP experiments. As a proof of concept, we constructed a series of proxyl-radical-embedded COFs (denoted as PR( x)-COFs) and successfully applied them to achieve substantial DNP enhancement. Benefiting from the bottom-up and multivariate synthetic strategies, proxyl radicals have been covalently reticulated, homogeneously distributed, and rigidly embedded into the crystalline and mesoporous frameworks with adjustable concentration ( x%). Excellent performance of PR( x)-COFs has been observed for DNP
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.